./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec4_product30.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_spec4_product30.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 80e9bbe10488e38c848fee2c8f87fc84d027f309ec95e867f80c828929ca07a3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:49:25,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:49:25,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:49:25,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:49:25,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:49:25,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:49:25,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:49:25,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:49:25,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:49:25,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:49:25,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:49:25,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:49:25,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:49:25,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:49:25,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:49:25,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:49:25,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:49:25,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:49:25,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:49:25,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:49:25,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:49:25,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:49:25,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:49:25,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:49:25,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:49:25,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:49:25,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:49:25,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:49:25,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:49:25,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:49:25,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:49:25,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:49:25,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:49:25,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:49:25,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:49:25,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:49:25,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:49:25,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:49:25,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:49:25,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:49:25,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:49:25,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:49:25,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:49:25,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:49:25,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:49:25,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:49:25,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:49:25,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:49:25,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:49:25,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:49:25,238 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:49:25,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:49:25,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:49:25,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:49:25,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:49:25,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:49:25,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:49:25,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:49:25,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:49:25,239 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:49:25,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:49:25,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:49:25,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:49:25,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:49:25,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:49:25,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:49:25,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:49:25,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:49:25,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:49:25,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:49:25,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:49:25,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:49:25,247 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:49:25,247 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:49:25,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:49:25,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80e9bbe10488e38c848fee2c8f87fc84d027f309ec95e867f80c828929ca07a3 [2021-12-28 00:49:25,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:49:25,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:49:25,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:49:25,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:49:25,558 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:49:25,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec4_product30.cil.c [2021-12-28 00:49:25,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9c3ae8c/52aa6394a26241c9b65439b92ad58908/FLAGb917cdfc0 [2021-12-28 00:49:26,067 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:49:26,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec4_product30.cil.c [2021-12-28 00:49:26,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9c3ae8c/52aa6394a26241c9b65439b92ad58908/FLAGb917cdfc0 [2021-12-28 00:49:26,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e9c3ae8c/52aa6394a26241c9b65439b92ad58908 [2021-12-28 00:49:26,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:49:26,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:49:26,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:49:26,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:49:26,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:49:26,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:26,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec812ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26, skipping insertion in model container [2021-12-28 00:49:26,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:26,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:49:26,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:49:26,819 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_spec4_product30.cil.c[64112,64125] [2021-12-28 00:49:26,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:49:26,827 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:49:26,944 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_spec4_product30.cil.c[64112,64125] [2021-12-28 00:49:26,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:49:26,970 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:49:26,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26 WrapperNode [2021-12-28 00:49:26,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:49:26,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:49:26,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:49:26,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:49:26,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,064 INFO L137 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 909 [2021-12-28 00:49:27,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:49:27,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:49:27,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:49:27,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:49:27,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:49:27,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:49:27,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:49:27,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:49:27,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (1/1) ... [2021-12-28 00:49:27,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:49:27,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:49:27,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 00:49:27,231 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 00:49:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-28 00:49:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-28 00:49:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-28 00:49:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-28 00:49:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-28 00:49:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-28 00:49:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:49:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:49:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:49:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:49:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:49:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:49:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:49:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:49:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-28 00:49:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-28 00:49:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-28 00:49:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-28 00:49:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:49:27,250 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:49:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:49:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:49:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:49:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:49:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:49:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:49:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-28 00:49:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-28 00:49:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-28 00:49:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-28 00:49:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:49:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:49:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:49:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:49:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:49:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-28 00:49:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-28 00:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:49:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-28 00:49:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-28 00:49:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:49:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:49:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:49:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:49:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:49:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:49:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:49:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:49:27,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:49:27,446 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:49:27,460 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:49:27,979 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:49:27,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:49:27,986 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:49:27,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:49:27 BoogieIcfgContainer [2021-12-28 00:49:27,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:49:27,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:49:27,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:49:27,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:49:27,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:49:26" (1/3) ... [2021-12-28 00:49:27,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:49:27, skipping insertion in model container [2021-12-28 00:49:27,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:49:26" (2/3) ... [2021-12-28 00:49:27,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b44136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:49:27, skipping insertion in model container [2021-12-28 00:49:27,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:49:27" (3/3) ... [2021-12-28 00:49:28,000 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product30.cil.c [2021-12-28 00:49:28,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:49:28,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:49:28,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:49:28,050 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 00:49:28,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:49:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 269 states have (on average 1.516728624535316) internal successors, (408), 273 states have internal predecessors, (408), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-28 00:49:28,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-28 00:49:28,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:28,091 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 00:49:28,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1539584585, now seen corresponding path program 1 times [2021-12-28 00:49:28,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:28,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739176969] [2021-12-28 00:49:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:28,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:49:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:49:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:49:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:49:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:49:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:49:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:49:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:49:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:49:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:49:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:49:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:49:28,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739176969] [2021-12-28 00:49:28,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739176969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:49:28,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683194628] [2021-12-28 00:49:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:28,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:49:28,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:49:28,462 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 00:49:28,463 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 00:49:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:28,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:49:28,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:49:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:49:28,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:49:28,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683194628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:28,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:49:28,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:49:28,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122997581] [2021-12-28 00:49:28,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:28,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:49:28,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:49:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:49:28,908 INFO L87 Difference]: Start difference. First operand has 347 states, 269 states have (on average 1.516728624535316) internal successors, (408), 273 states have internal predecessors, (408), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:28,995 INFO L93 Difference]: Finished difference Result 540 states and 782 transitions. [2021-12-28 00:49:29,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:49:29,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2021-12-28 00:49:29,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:29,015 INFO L225 Difference]: With dead ends: 540 [2021-12-28 00:49:29,020 INFO L226 Difference]: Without dead ends: 340 [2021-12-28 00:49:29,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 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 00:49:29,029 INFO L933 BasicCegarLoop]: 510 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, 510 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 00:49:29,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:49:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-28 00:49:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2021-12-28 00:49:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 263 states have (on average 1.5095057034220531) internal successors, (397), 266 states have internal predecessors, (397), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 00:49:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 502 transitions. [2021-12-28 00:49:29,113 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 502 transitions. Word has length 107 [2021-12-28 00:49:29,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:29,116 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 502 transitions. [2021-12-28 00:49:29,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 502 transitions. [2021-12-28 00:49:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 00:49:29,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:29,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 00:49:29,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 00:49:29,350 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 00:49:29,350 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1418715390, now seen corresponding path program 1 times [2021-12-28 00:49:29,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:29,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985378571] [2021-12-28 00:49:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:29,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:49:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:49:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:49:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:49:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:49:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:49:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:49:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:49:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:49:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:49:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:49:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:49:29,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:29,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985378571] [2021-12-28 00:49:29,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985378571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:49:29,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328011227] [2021-12-28 00:49:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:29,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:49:29,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:49:29,560 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 00:49:29,561 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 00:49:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:29,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:49:29,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:49:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:49:29,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:49:29,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328011227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:29,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:49:29,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:49:29,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060690228] [2021-12-28 00:49:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:29,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:49:29,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:49:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:49:29,908 INFO L87 Difference]: Start difference. First operand 340 states and 502 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:29,929 INFO L93 Difference]: Finished difference Result 530 states and 763 transitions. [2021-12-28 00:49:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:49:29,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2021-12-28 00:49:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:29,933 INFO L225 Difference]: With dead ends: 530 [2021-12-28 00:49:29,933 INFO L226 Difference]: Without dead ends: 343 [2021-12-28 00:49:29,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:49:29,934 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 998 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 00:49:29,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:49:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-28 00:49:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 342. [2021-12-28 00:49:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 265 states have (on average 1.5056603773584907) internal successors, (399), 268 states have internal predecessors, (399), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-28 00:49:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 504 transitions. [2021-12-28 00:49:29,952 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 504 transitions. Word has length 108 [2021-12-28 00:49:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:29,952 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 504 transitions. [2021-12-28 00:49:29,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 504 transitions. [2021-12-28 00:49:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 00:49:29,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:29,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 00:49:29,975 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 00:49:30,169 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 00:49:30,169 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1020845470, now seen corresponding path program 1 times [2021-12-28 00:49:30,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:30,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773640599] [2021-12-28 00:49:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:30,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:49:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:49:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:49:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:49:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:49:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:49:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:49:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:49:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:49:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:49:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:49:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:49:30,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773640599] [2021-12-28 00:49:30,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773640599] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:49:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638486241] [2021-12-28 00:49:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:30,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:49:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:49:30,346 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 00:49:30,347 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 00:49:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:30,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:49:30,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:49:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:49:30,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:49:30,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638486241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:30,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:49:30,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:49:30,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196818532] [2021-12-28 00:49:30,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:30,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:49:30,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:49:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:49:30,702 INFO L87 Difference]: Start difference. First operand 342 states and 504 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:30,720 INFO L93 Difference]: Finished difference Result 714 states and 1067 transitions. [2021-12-28 00:49:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:49:30,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2021-12-28 00:49:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:30,723 INFO L225 Difference]: With dead ends: 714 [2021-12-28 00:49:30,723 INFO L226 Difference]: Without dead ends: 399 [2021-12-28 00:49:30,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 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 00:49:30,725 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 107 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 977 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 00:49:30,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 977 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:49:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-28 00:49:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 391. [2021-12-28 00:49:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 303 states have (on average 1.5214521452145215) internal successors, (461), 306 states have internal predecessors, (461), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-12-28 00:49:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 588 transitions. [2021-12-28 00:49:30,743 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 588 transitions. Word has length 117 [2021-12-28 00:49:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:30,743 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 588 transitions. [2021-12-28 00:49:30,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 588 transitions. [2021-12-28 00:49:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 00:49:30,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:30,746 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-28 00:49:30,766 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 00:49:30,963 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 00:49:30,964 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:30,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash -458011057, now seen corresponding path program 1 times [2021-12-28 00:49:30,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:30,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866065577] [2021-12-28 00:49:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:30,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:49:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:49:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:49:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:49:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:49:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:49:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:49:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:49:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:49:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:49:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:49:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:49:31,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:31,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866065577] [2021-12-28 00:49:31,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866065577] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:49:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605825614] [2021-12-28 00:49:31,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:31,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:49:31,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:49:31,123 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 00:49:31,124 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 00:49:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:49:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:49:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 00:49:31,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:49:31,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605825614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:31,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:49:31,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:49:31,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453525930] [2021-12-28 00:49:31,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:31,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:49:31,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:49:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:49:31,506 INFO L87 Difference]: Start difference. First operand 391 states and 588 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:31,590 INFO L93 Difference]: Finished difference Result 773 states and 1166 transitions. [2021-12-28 00:49:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:49:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2021-12-28 00:49:31,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:31,617 INFO L225 Difference]: With dead ends: 773 [2021-12-28 00:49:31,617 INFO L226 Difference]: Without dead ends: 393 [2021-12-28 00:49:31,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 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 00:49:31,619 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 125 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1828 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 00:49:31,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1828 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:49:31,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-28 00:49:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-12-28 00:49:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 304 states have (on average 1.519736842105263) internal successors, (462), 308 states have internal predecessors, (462), 64 states have call successors, (64), 23 states have call predecessors, (64), 24 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2021-12-28 00:49:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 591 transitions. [2021-12-28 00:49:31,653 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 591 transitions. Word has length 118 [2021-12-28 00:49:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:31,667 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 591 transitions. [2021-12-28 00:49:31,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 591 transitions. [2021-12-28 00:49:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-28 00:49:31,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:31,670 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:31,690 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 00:49:31,870 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 00:49:31,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:31,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash 337103646, now seen corresponding path program 1 times [2021-12-28 00:49:31,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:31,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306749732] [2021-12-28 00:49:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:31,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:49:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:49:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:49:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:49:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:49:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:49:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:49:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:49:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:49:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:49:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:49:31,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:31,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306749732] [2021-12-28 00:49:31,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306749732] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:49:31,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143926290] [2021-12-28 00:49:31,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:31,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:49:31,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:49:32,012 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 00:49:32,013 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 00:49:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:49:32,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:49:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 00:49:32,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:49:32,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143926290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:32,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:49:32,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:49:32,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216103946] [2021-12-28 00:49:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:32,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:49:32,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:32,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:49:32,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:49:32,416 INFO L87 Difference]: Start difference. First operand 393 states and 591 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:32,469 INFO L93 Difference]: Finished difference Result 775 states and 1171 transitions. [2021-12-28 00:49:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:49:32,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2021-12-28 00:49:32,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:32,472 INFO L225 Difference]: With dead ends: 775 [2021-12-28 00:49:32,472 INFO L226 Difference]: Without dead ends: 395 [2021-12-28 00:49:32,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 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 00:49:32,474 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 124 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1817 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 00:49:32,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1817 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:49:32,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-12-28 00:49:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2021-12-28 00:49:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.518032786885246) internal successors, (463), 310 states have internal predecessors, (463), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2021-12-28 00:49:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 597 transitions. [2021-12-28 00:49:32,491 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 597 transitions. Word has length 119 [2021-12-28 00:49:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:32,491 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 597 transitions. [2021-12-28 00:49:32,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 597 transitions. [2021-12-28 00:49:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 00:49:32,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:32,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:32,514 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 00:49:32,711 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 00:49:32,711 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:32,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash -207075730, now seen corresponding path program 1 times [2021-12-28 00:49:32,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:32,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235506974] [2021-12-28 00:49:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:32,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:49:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:49:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:49:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:49:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:49:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:49:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:49:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:49:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:49:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:49:32,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:32,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235506974] [2021-12-28 00:49:32,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235506974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:32,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:32,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:49:32,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366552418] [2021-12-28 00:49:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:32,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:49:32,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:49:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:49:32,851 INFO L87 Difference]: Start difference. First operand 395 states and 597 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, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:34,210 INFO L93 Difference]: Finished difference Result 882 states and 1335 transitions. [2021-12-28 00:49:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:49:34,210 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, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-12-28 00:49:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:34,213 INFO L225 Difference]: With dead ends: 882 [2021-12-28 00:49:34,213 INFO L226 Difference]: Without dead ends: 510 [2021-12-28 00:49:34,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 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 00:49:34,215 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1213 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:34,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1380 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:49:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-12-28 00:49:34,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 395. [2021-12-28 00:49:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.518032786885246) internal successors, (463), 310 states have internal predecessors, (463), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2021-12-28 00:49:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 596 transitions. [2021-12-28 00:49:34,235 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 596 transitions. Word has length 120 [2021-12-28 00:49:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 596 transitions. [2021-12-28 00:49:34,236 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, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 596 transitions. [2021-12-28 00:49:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 00:49:34,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:34,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:34,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:49:34,238 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash -143770209, now seen corresponding path program 2 times [2021-12-28 00:49:34,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:34,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632995336] [2021-12-28 00:49:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:34,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:49:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:49:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:49:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:49:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:49:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:49:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:49:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:49:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:49:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:49:34,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:34,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632995336] [2021-12-28 00:49:34,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632995336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:34,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:34,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:49:34,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629401295] [2021-12-28 00:49:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:34,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:49:34,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:49:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:49:34,329 INFO L87 Difference]: Start difference. First operand 395 states and 596 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:35,615 INFO L93 Difference]: Finished difference Result 884 states and 1338 transitions. [2021-12-28 00:49:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:49:35,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-12-28 00:49:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:35,619 INFO L225 Difference]: With dead ends: 884 [2021-12-28 00:49:35,619 INFO L226 Difference]: Without dead ends: 512 [2021-12-28 00:49:35,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:49:35,621 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1208 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:35,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 1381 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:49:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-28 00:49:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 397. [2021-12-28 00:49:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 312 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2021-12-28 00:49:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 599 transitions. [2021-12-28 00:49:35,641 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 599 transitions. Word has length 121 [2021-12-28 00:49:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:35,642 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 599 transitions. [2021-12-28 00:49:35,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-28 00:49:35,642 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 599 transitions. [2021-12-28 00:49:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 00:49:35,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:35,644 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:35,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:49:35,644 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash -930252375, now seen corresponding path program 1 times [2021-12-28 00:49:35,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:35,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53135406] [2021-12-28 00:49:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:35,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:49:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:49:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:49:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:49:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:49:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:49:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:49:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:49:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:49:35,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:35,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53135406] [2021-12-28 00:49:35,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53135406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:35,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:35,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:49:35,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071766974] [2021-12-28 00:49:35,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:35,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:49:35,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:35,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:49:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:49:35,757 INFO L87 Difference]: Start difference. First operand 397 states and 599 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, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:49:37,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:37,704 INFO L93 Difference]: Finished difference Result 882 states and 1333 transitions. [2021-12-28 00:49:37,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:49:37,704 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, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 122 [2021-12-28 00:49:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:37,707 INFO L225 Difference]: With dead ends: 882 [2021-12-28 00:49:37,707 INFO L226 Difference]: Without dead ends: 512 [2021-12-28 00:49:37,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:49:37,709 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1320 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:37,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 1684 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 00:49:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-28 00:49:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 397. [2021-12-28 00:49:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.5163398692810457) internal successors, (464), 312 states have internal predecessors, (464), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2021-12-28 00:49:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 598 transitions. [2021-12-28 00:49:37,730 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 598 transitions. Word has length 122 [2021-12-28 00:49:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:37,731 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 598 transitions. [2021-12-28 00:49:37,731 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, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:49:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 598 transitions. [2021-12-28 00:49:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 00:49:37,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:37,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:37,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:49:37,733 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1444147897, now seen corresponding path program 2 times [2021-12-28 00:49:37,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:37,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959748451] [2021-12-28 00:49:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:37,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:49:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:49:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:49:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:49:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:49:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:49:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:49:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:49:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:49:37,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:37,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959748451] [2021-12-28 00:49:37,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959748451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:37,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:37,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:49:37,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453737897] [2021-12-28 00:49:37,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:37,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:49:37,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:49:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:49:37,866 INFO L87 Difference]: Start difference. First operand 397 states and 598 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:49:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:39,662 INFO L93 Difference]: Finished difference Result 884 states and 1339 transitions. [2021-12-28 00:49:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:49:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2021-12-28 00:49:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:39,665 INFO L225 Difference]: With dead ends: 884 [2021-12-28 00:49:39,665 INFO L226 Difference]: Without dead ends: 514 [2021-12-28 00:49:39,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:49:39,667 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1315 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:39,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 1685 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 00:49:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-28 00:49:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 399. [2021-12-28 00:49:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 307 states have (on average 1.514657980456026) internal successors, (465), 314 states have internal predecessors, (465), 64 states have call successors, (64), 23 states have call predecessors, (64), 27 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2021-12-28 00:49:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 604 transitions. [2021-12-28 00:49:39,685 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 604 transitions. Word has length 123 [2021-12-28 00:49:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:39,686 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 604 transitions. [2021-12-28 00:49:39,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-28 00:49:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 604 transitions. [2021-12-28 00:49:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 00:49:39,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:39,688 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:39,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:49:39,688 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1243671236, now seen corresponding path program 1 times [2021-12-28 00:49:39,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:39,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196994155] [2021-12-28 00:49:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:39,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:49:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:49:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:49:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:49:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:49:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:49:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:49:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:49:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-28 00:49:39,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196994155] [2021-12-28 00:49:39,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196994155] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:49:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638462853] [2021-12-28 00:49:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:39,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:49:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:49:39,812 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 00:49:39,813 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 00:49:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:40,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:49:40,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:49:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:40,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:49:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:40,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638462853] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:49:40,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:49:40,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-28 00:49:40,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565409721] [2021-12-28 00:49:40,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:49:40,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 00:49:40,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 00:49:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:49:40,367 INFO L87 Difference]: Start difference. First operand 399 states and 604 transitions. Second operand has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 00:49:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:43,277 INFO L93 Difference]: Finished difference Result 1563 states and 2567 transitions. [2021-12-28 00:49:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 00:49:43,278 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 124 [2021-12-28 00:49:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:43,283 INFO L225 Difference]: With dead ends: 1563 [2021-12-28 00:49:43,283 INFO L226 Difference]: Without dead ends: 1195 [2021-12-28 00:49:43,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-28 00:49:43,285 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 3071 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 5816 mSolverCounterSat, 1233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 4088 SdHoareTripleChecker+Invalid, 7049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1233 IncrementalHoareTripleChecker+Valid, 5816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:43,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3073 Valid, 4088 Invalid, 7049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1233 Valid, 5816 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-28 00:49:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-12-28 00:49:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 727. [2021-12-28 00:49:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 571 states have (on average 1.5691768826619965) internal successors, (896), 578 states have internal predecessors, (896), 128 states have call successors, (128), 23 states have call predecessors, (128), 27 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2021-12-28 00:49:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1173 transitions. [2021-12-28 00:49:43,344 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1173 transitions. Word has length 124 [2021-12-28 00:49:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:43,345 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1173 transitions. [2021-12-28 00:49:43,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 11 states have internal predecessors, (136), 4 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 00:49:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1173 transitions. [2021-12-28 00:49:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 00:49:43,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:43,348 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:43,386 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 00:49:43,563 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 00:49:43,564 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash -966847354, now seen corresponding path program 1 times [2021-12-28 00:49:43,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:43,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104784987] [2021-12-28 00:49:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:43,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:49:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:49:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:49:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:49:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:49:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:49:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:49:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:49:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:43,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:43,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104784987] [2021-12-28 00:49:43,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104784987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:43,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:43,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:43,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820115840] [2021-12-28 00:49:43,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:43,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:43,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:43,674 INFO L87 Difference]: Start difference. First operand 727 states and 1173 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:45,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:45,001 INFO L93 Difference]: Finished difference Result 1799 states and 2970 transitions. [2021-12-28 00:49:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:45,001 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2021-12-28 00:49:45,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:45,006 INFO L225 Difference]: With dead ends: 1799 [2021-12-28 00:49:45,006 INFO L226 Difference]: Without dead ends: 1150 [2021-12-28 00:49:45,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:45,021 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1203 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:45,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 1252 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:49:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-12-28 00:49:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1027. [2021-12-28 00:49:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 807 states have (on average 1.587360594795539) internal successors, (1281), 814 states have internal predecessors, (1281), 192 states have call successors, (192), 23 states have call predecessors, (192), 27 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2021-12-28 00:49:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1696 transitions. [2021-12-28 00:49:45,094 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1696 transitions. Word has length 127 [2021-12-28 00:49:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:45,094 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1696 transitions. [2021-12-28 00:49:45,094 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1696 transitions. [2021-12-28 00:49:45,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 00:49:45,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:45,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:45,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 00:49:45,100 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:45,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1193482112, now seen corresponding path program 1 times [2021-12-28 00:49:45,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:45,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060229097] [2021-12-28 00:49:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:45,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:49:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:49:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:49:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:49:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:49:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:49:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:49:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:49:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:45,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:45,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060229097] [2021-12-28 00:49:45,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060229097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:45,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:45,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:45,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064085967] [2021-12-28 00:49:45,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:45,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:45,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:45,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:45,190 INFO L87 Difference]: Start difference. First operand 1027 states and 1696 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:46,132 INFO L93 Difference]: Finished difference Result 2539 states and 4250 transitions. [2021-12-28 00:49:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:46,133 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2021-12-28 00:49:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:46,139 INFO L225 Difference]: With dead ends: 2539 [2021-12-28 00:49:46,139 INFO L226 Difference]: Without dead ends: 1643 [2021-12-28 00:49:46,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:46,142 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1201 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:46,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 1220 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:49:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-12-28 00:49:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1520. [2021-12-28 00:49:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1205 states have (on average 1.595850622406639) internal successors, (1923), 1212 states have internal predecessors, (1923), 287 states have call successors, (287), 23 states have call predecessors, (287), 27 states have return successors, (318), 286 states have call predecessors, (318), 286 states have call successors, (318) [2021-12-28 00:49:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2528 transitions. [2021-12-28 00:49:46,209 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2528 transitions. Word has length 128 [2021-12-28 00:49:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:46,210 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 2528 transitions. [2021-12-28 00:49:46,210 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2528 transitions. [2021-12-28 00:49:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 00:49:46,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:46,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:46,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:49:46,216 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1381112428, now seen corresponding path program 1 times [2021-12-28 00:49:46,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:46,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625124186] [2021-12-28 00:49:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:46,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:49:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:49:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:49:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:49:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:49:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:49:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:49:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:49:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:46,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:46,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625124186] [2021-12-28 00:49:46,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625124186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:46,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:46,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:46,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745553299] [2021-12-28 00:49:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:46,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:46,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:46,291 INFO L87 Difference]: Start difference. First operand 1520 states and 2528 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:47,245 INFO L93 Difference]: Finished difference Result 3641 states and 6168 transitions. [2021-12-28 00:49:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:47,245 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-28 00:49:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:47,254 INFO L225 Difference]: With dead ends: 3641 [2021-12-28 00:49:47,254 INFO L226 Difference]: Without dead ends: 2387 [2021-12-28 00:49:47,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:47,257 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1199 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:47,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 1220 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:49:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2021-12-28 00:49:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2264. [2021-12-28 00:49:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 1826 states have (on average 1.6024096385542168) internal successors, (2926), 1833 states have internal predecessors, (2926), 410 states have call successors, (410), 23 states have call predecessors, (410), 27 states have return successors, (457), 409 states have call predecessors, (457), 409 states have call successors, (457) [2021-12-28 00:49:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3793 transitions. [2021-12-28 00:49:47,369 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3793 transitions. Word has length 129 [2021-12-28 00:49:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:47,369 INFO L470 AbstractCegarLoop]: Abstraction has 2264 states and 3793 transitions. [2021-12-28 00:49:47,370 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:47,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3793 transitions. [2021-12-28 00:49:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 00:49:47,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:47,377 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:47,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:49:47,377 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:47,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1937268895, now seen corresponding path program 1 times [2021-12-28 00:49:47,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:47,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258991603] [2021-12-28 00:49:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:47,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:49:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:49:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:49:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:49:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:49:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:49:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:49:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:49:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:47,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:47,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258991603] [2021-12-28 00:49:47,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258991603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:47,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:47,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:47,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411419924] [2021-12-28 00:49:47,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:47,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:47,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:47,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:47,455 INFO L87 Difference]: Start difference. First operand 2264 states and 3793 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:48,329 INFO L93 Difference]: Finished difference Result 5350 states and 9148 transitions. [2021-12-28 00:49:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:48,330 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-28 00:49:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:48,358 INFO L225 Difference]: With dead ends: 5350 [2021-12-28 00:49:48,358 INFO L226 Difference]: Without dead ends: 3571 [2021-12-28 00:49:48,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:48,369 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 1197 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:48,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 1218 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:49:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-12-28 00:49:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 3448. [2021-12-28 00:49:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 2831 states have (on average 1.6064994701518898) internal successors, (4548), 2838 states have internal predecessors, (4548), 589 states have call successors, (589), 23 states have call predecessors, (589), 27 states have return successors, (662), 588 states have call predecessors, (662), 588 states have call successors, (662) [2021-12-28 00:49:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 5799 transitions. [2021-12-28 00:49:48,531 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 5799 transitions. Word has length 130 [2021-12-28 00:49:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:48,531 INFO L470 AbstractCegarLoop]: Abstraction has 3448 states and 5799 transitions. [2021-12-28 00:49:48,532 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 5799 transitions. [2021-12-28 00:49:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-28 00:49:48,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:48,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:48,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:49:48,540 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash 881576016, now seen corresponding path program 1 times [2021-12-28 00:49:48,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:48,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943329124] [2021-12-28 00:49:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:48,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:49:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:49:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:49:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:49:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:49:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:49:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:49:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:49:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:48,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:48,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943329124] [2021-12-28 00:49:48,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943329124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:48,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:48,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:48,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378545180] [2021-12-28 00:49:48,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:48,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:48,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:48,631 INFO L87 Difference]: Start difference. First operand 3448 states and 5799 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:49,750 INFO L93 Difference]: Finished difference Result 8423 states and 14464 transitions. [2021-12-28 00:49:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-28 00:49:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:49,772 INFO L225 Difference]: With dead ends: 8423 [2021-12-28 00:49:49,772 INFO L226 Difference]: Without dead ends: 5712 [2021-12-28 00:49:49,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:49,779 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1195 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:49,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1210 Valid, 1267 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:49:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5712 states. [2021-12-28 00:49:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5712 to 5589. [2021-12-28 00:49:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5589 states, 4596 states have (on average 1.6000870322019147) internal successors, (7354), 4603 states have internal predecessors, (7354), 965 states have call successors, (965), 23 states have call predecessors, (965), 27 states have return successors, (1082), 964 states have call predecessors, (1082), 964 states have call successors, (1082) [2021-12-28 00:49:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5589 states to 5589 states and 9401 transitions. [2021-12-28 00:49:50,073 INFO L78 Accepts]: Start accepts. Automaton has 5589 states and 9401 transitions. Word has length 131 [2021-12-28 00:49:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:50,073 INFO L470 AbstractCegarLoop]: Abstraction has 5589 states and 9401 transitions. [2021-12-28 00:49:50,074 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5589 states and 9401 transitions. [2021-12-28 00:49:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-28 00:49:50,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:50,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:50,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:49:50,086 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1281458011, now seen corresponding path program 1 times [2021-12-28 00:49:50,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:50,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068418261] [2021-12-28 00:49:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:50,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:49:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:49:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:49:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:49:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:49:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:49:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 00:49:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:49:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:50,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:50,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068418261] [2021-12-28 00:49:50,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068418261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:50,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:50,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:50,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989560890] [2021-12-28 00:49:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:50,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:50,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:50,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:50,168 INFO L87 Difference]: Start difference. First operand 5589 states and 9401 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:51,298 INFO L93 Difference]: Finished difference Result 13845 states and 23765 transitions. [2021-12-28 00:49:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-28 00:49:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:51,332 INFO L225 Difference]: With dead ends: 13845 [2021-12-28 00:49:51,332 INFO L226 Difference]: Without dead ends: 9395 [2021-12-28 00:49:51,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:51,343 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1193 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:51,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 1221 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:49:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2021-12-28 00:49:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 9272. [2021-12-28 00:49:51,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 7673 states have (on average 1.5979408314870325) internal successors, (12261), 7680 states have internal predecessors, (12261), 1571 states have call successors, (1571), 23 states have call predecessors, (1571), 27 states have return successors, (1766), 1570 states have call predecessors, (1766), 1570 states have call successors, (1766) [2021-12-28 00:49:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 15598 transitions. [2021-12-28 00:49:51,859 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 15598 transitions. Word has length 132 [2021-12-28 00:49:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:51,860 INFO L470 AbstractCegarLoop]: Abstraction has 9272 states and 15598 transitions. [2021-12-28 00:49:51,860 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 15598 transitions. [2021-12-28 00:49:51,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 00:49:51,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:51,877 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:51,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:49:51,878 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:51,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1579757742, now seen corresponding path program 1 times [2021-12-28 00:49:51,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:51,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125715989] [2021-12-28 00:49:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:51,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:49:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:49:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:49:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:49:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:49:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:49:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:49:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:49:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:51,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:51,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125715989] [2021-12-28 00:49:51,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125715989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:51,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:51,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:51,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379178322] [2021-12-28 00:49:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:51,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:51,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:51,958 INFO L87 Difference]: Start difference. First operand 9272 states and 15598 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:53,434 INFO L93 Difference]: Finished difference Result 24029 states and 41206 transitions. [2021-12-28 00:49:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:53,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-28 00:49:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:53,538 INFO L225 Difference]: With dead ends: 24029 [2021-12-28 00:49:53,538 INFO L226 Difference]: Without dead ends: 16348 [2021-12-28 00:49:53,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:53,560 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1191 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:53,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 1261 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:49:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16348 states. [2021-12-28 00:49:54,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16348 to 16225. [2021-12-28 00:49:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16225 states, 13423 states have (on average 1.5891380466363705) internal successors, (21331), 13430 states have internal predecessors, (21331), 2774 states have call successors, (2774), 23 states have call predecessors, (2774), 27 states have return successors, (3113), 2773 states have call predecessors, (3113), 2773 states have call successors, (3113) [2021-12-28 00:49:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16225 states to 16225 states and 27218 transitions. [2021-12-28 00:49:54,478 INFO L78 Accepts]: Start accepts. Automaton has 16225 states and 27218 transitions. Word has length 133 [2021-12-28 00:49:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:54,478 INFO L470 AbstractCegarLoop]: Abstraction has 16225 states and 27218 transitions. [2021-12-28 00:49:54,478 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 16225 states and 27218 transitions. [2021-12-28 00:49:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 00:49:54,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:54,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:54,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:49:54,503 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1931021274, now seen corresponding path program 1 times [2021-12-28 00:49:54,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:54,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354441354] [2021-12-28 00:49:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:54,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:49:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:49:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:49:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:49:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:49:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:49:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:49:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 00:49:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:54,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:54,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354441354] [2021-12-28 00:49:54,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354441354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:54,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:54,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:54,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19300404] [2021-12-28 00:49:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:54,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:54,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:54,590 INFO L87 Difference]: Start difference. First operand 16225 states and 27218 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:49:56,510 INFO L93 Difference]: Finished difference Result 42995 states and 73603 transitions. [2021-12-28 00:49:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:49:56,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-28 00:49:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:49:56,604 INFO L225 Difference]: With dead ends: 42995 [2021-12-28 00:49:56,604 INFO L226 Difference]: Without dead ends: 29003 [2021-12-28 00:49:56,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:49:56,638 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1189 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:49:56,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 1223 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:49:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29003 states. [2021-12-28 00:49:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29003 to 28880. [2021-12-28 00:49:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28880 states, 24039 states have (on average 1.58484129955489) internal successors, (38098), 24046 states have internal predecessors, (38098), 4813 states have call successors, (4813), 23 states have call predecessors, (4813), 27 states have return successors, (5426), 4812 states have call predecessors, (5426), 4812 states have call successors, (5426) [2021-12-28 00:49:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28880 states to 28880 states and 48337 transitions. [2021-12-28 00:49:58,279 INFO L78 Accepts]: Start accepts. Automaton has 28880 states and 48337 transitions. Word has length 134 [2021-12-28 00:49:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:49:58,279 INFO L470 AbstractCegarLoop]: Abstraction has 28880 states and 48337 transitions. [2021-12-28 00:49:58,280 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:49:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 28880 states and 48337 transitions. [2021-12-28 00:49:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 00:49:58,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:49:58,304 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:49:58,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:49:58,304 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:49:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:49:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1425598796, now seen corresponding path program 1 times [2021-12-28 00:49:58,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:49:58,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789200109] [2021-12-28 00:49:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:49:58,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:49:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:49:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:49:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:49:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:49:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:49:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:49:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:49:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:49:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:49:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:49:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:49:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:49:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:49:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:49:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:49:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:49:58,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:49:58,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789200109] [2021-12-28 00:49:58,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789200109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:49:58,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:49:58,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:49:58,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111126220] [2021-12-28 00:49:58,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:49:58,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:49:58,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:49:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:49:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:49:58,376 INFO L87 Difference]: Start difference. First operand 28880 states and 48337 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:50:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:50:01,516 INFO L93 Difference]: Finished difference Result 78757 states and 133967 transitions. [2021-12-28 00:50:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:50:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-28 00:50:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:50:01,702 INFO L225 Difference]: With dead ends: 78757 [2021-12-28 00:50:01,702 INFO L226 Difference]: Without dead ends: 52882 [2021-12-28 00:50:01,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:50:01,774 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 1187 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:50:01,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 1226 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:50:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52882 states. [2021-12-28 00:50:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52882 to 52759. [2021-12-28 00:50:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52759 states, 44203 states have (on average 1.579100965997783) internal successors, (69801), 44210 states have internal predecessors, (69801), 8528 states have call successors, (8528), 23 states have call predecessors, (8528), 27 states have return successors, (9673), 8527 states have call predecessors, (9673), 8527 states have call successors, (9673) [2021-12-28 00:50:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52759 states to 52759 states and 88002 transitions. [2021-12-28 00:50:05,118 INFO L78 Accepts]: Start accepts. Automaton has 52759 states and 88002 transitions. Word has length 135 [2021-12-28 00:50:05,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:50:05,119 INFO L470 AbstractCegarLoop]: Abstraction has 52759 states and 88002 transitions. [2021-12-28 00:50:05,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:50:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 52759 states and 88002 transitions. [2021-12-28 00:50:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-28 00:50:05,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:50:05,156 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:50:05,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:50:05,156 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:50:05,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:50:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash -460821434, now seen corresponding path program 1 times [2021-12-28 00:50:05,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:50:05,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851777162] [2021-12-28 00:50:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:50:05,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:50:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:50:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:50:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:50:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:50:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:50:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:50:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:50:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:50:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:50:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:50:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:50:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:50:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:50:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:50:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:50:05,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:50:05,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851777162] [2021-12-28 00:50:05,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851777162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:50:05,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:50:05,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:50:05,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144713545] [2021-12-28 00:50:05,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:50:05,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:50:05,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:50:05,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:50:05,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:50:05,255 INFO L87 Difference]: Start difference. First operand 52759 states and 88002 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:50:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:50:10,166 INFO L93 Difference]: Finished difference Result 98528 states and 167897 transitions. [2021-12-28 00:50:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:50:10,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-28 00:50:10,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:50:10,618 INFO L225 Difference]: With dead ends: 98528 [2021-12-28 00:50:10,618 INFO L226 Difference]: Without dead ends: 98341 [2021-12-28 00:50:10,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:50:10,654 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1185 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:50:10,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 1223 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:50:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98341 states. [2021-12-28 00:50:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98341 to 98218. [2021-12-28 00:50:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98218 states, 82863 states have (on average 1.5718475073313782) internal successors, (130248), 82870 states have internal predecessors, (130248), 15327 states have call successors, (15327), 23 states have call predecessors, (15327), 27 states have return successors, (17518), 15326 states have call predecessors, (17518), 15326 states have call successors, (17518) [2021-12-28 00:50:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98218 states to 98218 states and 163093 transitions. [2021-12-28 00:50:16,477 INFO L78 Accepts]: Start accepts. Automaton has 98218 states and 163093 transitions. Word has length 136 [2021-12-28 00:50:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:50:16,478 INFO L470 AbstractCegarLoop]: Abstraction has 98218 states and 163093 transitions. [2021-12-28 00:50:16,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 00:50:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 98218 states and 163093 transitions. [2021-12-28 00:50:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-28 00:50:16,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:50:16,517 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:50:16,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 00:50:16,518 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:50:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:50:16,518 INFO L85 PathProgramCache]: Analyzing trace with hash 274063027, now seen corresponding path program 1 times [2021-12-28 00:50:16,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:50:16,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826665234] [2021-12-28 00:50:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:50:16,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:50:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:50:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:50:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:50:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:50:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:50:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:50:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:50:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:50:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:50:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:50:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:50:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:50:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:50:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:50:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:50:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 00:50:16,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:50:16,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826665234] [2021-12-28 00:50:16,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826665234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:50:16,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:50:16,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 00:50:16,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524030851] [2021-12-28 00:50:16,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:50:16,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 00:50:16,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:50:16,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 00:50:16,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-12-28 00:50:16,704 INFO L87 Difference]: Start difference. First operand 98218 states and 163093 transitions. Second operand has 18 states, 16 states have (on average 5.6875) internal successors, (91), 12 states have internal predecessors, (91), 6 states have call successors, (16), 7 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)