./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec9_product12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_spec9_product12.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 4d7925e6725ebc9ccc1628dac3a92336bad7d7149419f1b3b2e679ed4e3055d5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:12:01,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:12:01,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:12:01,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:12:01,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:12:01,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:12:01,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:12:01,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:12:01,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:12:01,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:12:01,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:12:01,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:12:01,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:12:01,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:12:01,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:12:01,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:12:01,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:12:01,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:12:01,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:12:01,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:12:01,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:12:01,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:12:01,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:12:01,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:12:01,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:12:01,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:12:01,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:12:01,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:12:01,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:12:01,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:12:01,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:12:01,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:12:01,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:12:01,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:12:01,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:12:01,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:12:01,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:12:01,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:12:01,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:12:01,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:12:01,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:12:01,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:12:01,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:12:01,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:12:01,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:12:01,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:12:01,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:12:01,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:12:01,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:12:01,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:12:01,335 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:12:01,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:12:01,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:12:01,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:12:01,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:12:01,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:12:01,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:12:01,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:12:01,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:12:01,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:12:01,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:12:01,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:12:01,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:12:01,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:12:01,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:12:01,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:12:01,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:12:01,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:12:01,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:12:01,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:12:01,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:12:01,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:12:01,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:12:01,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:12:01,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:12:01,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:12:01,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d7925e6725ebc9ccc1628dac3a92336bad7d7149419f1b3b2e679ed4e3055d5 [2021-12-21 13:12:01,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:12:01,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:12:01,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:12:01,560 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:12:01,561 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:12:01,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec9_product12.cil.c [2021-12-21 13:12:01,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ea870d9/23e20af6d5fd4262878ecbca62f1e347/FLAG7fac8cc1a [2021-12-21 13:12:01,978 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:12:01,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product12.cil.c [2021-12-21 13:12:01,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ea870d9/23e20af6d5fd4262878ecbca62f1e347/FLAG7fac8cc1a [2021-12-21 13:12:02,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ea870d9/23e20af6d5fd4262878ecbca62f1e347 [2021-12-21 13:12:02,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:12:02,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:12:02,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:12:02,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:12:02,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:12:02,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f765ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02, skipping insertion in model container [2021-12-21 13:12:02,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:12:02,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:12:02,701 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_spec9_product12.cil.c[29763,29776] [2021-12-21 13:12:02,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:12:02,755 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:12:02,812 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_spec9_product12.cil.c[29763,29776] [2021-12-21 13:12:02,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:12:02,867 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:12:02,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02 WrapperNode [2021-12-21 13:12:02,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:12:02,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:12:02,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:12:02,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:12:02,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,932 INFO L137 Inliner]: procedures = 123, calls = 191, calls flagged for inlining = 51, calls inlined = 41, statements flattened = 834 [2021-12-21 13:12:02,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:12:02,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:12:02,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:12:02,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:12:02,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:02,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:12:02,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:12:02,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:12:02,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:12:02,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (1/1) ... [2021-12-21 13:12:03,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:12:03,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:03,042 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) [2021-12-21 13:12:03,046 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 [2021-12-21 13:12:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-21 13:12:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-21 13:12:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-21 13:12:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-21 13:12:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:12:03,064 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:12:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:12:03,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:12:03,065 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:12:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-21 13:12:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-21 13:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:12:03,066 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:12:03,066 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:12:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:12:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:12:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:12:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:12:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:12:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:12:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:12:03,067 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:12:03,067 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:12:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:12:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-21 13:12:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-21 13:12:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:12:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:12:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:12:03,068 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:12:03,068 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:12:03,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:12:03,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:12:03,190 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:12:03,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:12:03,647 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:12:03,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:12:03,653 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:12:03,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:12:03 BoogieIcfgContainer [2021-12-21 13:12:03,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:12:03,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:12:03,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:12:03,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:12:03,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:12:02" (1/3) ... [2021-12-21 13:12:03,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554e3609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:12:03, skipping insertion in model container [2021-12-21 13:12:03,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:12:02" (2/3) ... [2021-12-21 13:12:03,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554e3609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:12:03, skipping insertion in model container [2021-12-21 13:12:03,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:12:03" (3/3) ... [2021-12-21 13:12:03,660 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product12.cil.c [2021-12-21 13:12:03,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:12:03,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:12:03,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:12:03,700 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 [2021-12-21 13:12:03,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:12:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-21 13:12:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-21 13:12:03,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:03,742 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:03,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2039353953, now seen corresponding path program 1 times [2021-12-21 13:12:03,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:03,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049290077] [2021-12-21 13:12:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:03,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:03,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 13:12:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:12:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:12:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:12:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 13:12:04,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:04,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049290077] [2021-12-21 13:12:04,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049290077] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:04,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063112037] [2021-12-21 13:12:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:04,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:04,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:04,132 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) [2021-12-21 13:12:04,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:12:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 13:12:04,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:12:04,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:04,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063112037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:04,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:04,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-21 13:12:04,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180786938] [2021-12-21 13:12:04,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:04,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:12:04,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:04,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:12:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:12:04,585 INFO L87 Difference]: Start difference. First operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:04,637 INFO L93 Difference]: Finished difference Result 375 states and 558 transitions. [2021-12-21 13:12:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:12:04,638 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2021-12-21 13:12:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:04,647 INFO L225 Difference]: With dead ends: 375 [2021-12-21 13:12:04,647 INFO L226 Difference]: Without dead ends: 255 [2021-12-21 13:12:04,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:12:04,654 INFO L933 BasicCegarLoop]: 394 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, 394 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 [2021-12-21 13:12:04,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-21 13:12:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-12-21 13:12:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 200 states have (on average 1.545) internal successors, (309), 203 states have internal predecessors, (309), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-21 13:12:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 386 transitions. [2021-12-21 13:12:04,695 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 386 transitions. Word has length 86 [2021-12-21 13:12:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:04,696 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 386 transitions. [2021-12-21 13:12:04,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 386 transitions. [2021-12-21 13:12:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 13:12:04,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:04,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:04,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 13:12:04,915 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 [2021-12-21 13:12:04,916 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:04,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash 71453907, now seen corresponding path program 1 times [2021-12-21 13:12:04,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:04,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827280988] [2021-12-21 13:12:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:04,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 13:12:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:12:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:12:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:12:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 13:12:05,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:05,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827280988] [2021-12-21 13:12:05,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827280988] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:05,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438130897] [2021-12-21 13:12:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:05,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:05,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:05,059 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) [2021-12-21 13:12:05,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:12:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:12:05,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:12:05,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:05,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438130897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:05,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:05,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-21 13:12:05,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480991535] [2021-12-21 13:12:05,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:05,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:12:05,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:12:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:05,429 INFO L87 Difference]: Start difference. First operand 255 states and 386 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:05,461 INFO L93 Difference]: Finished difference Result 365 states and 539 transitions. [2021-12-21 13:12:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:12:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2021-12-21 13:12:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:05,467 INFO L225 Difference]: With dead ends: 365 [2021-12-21 13:12:05,467 INFO L226 Difference]: Without dead ends: 258 [2021-12-21 13:12:05,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:05,469 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 766 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 [2021-12-21 13:12:05,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 766 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-21 13:12:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2021-12-21 13:12:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 202 states have (on average 1.5396039603960396) internal successors, (311), 205 states have internal predecessors, (311), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-21 13:12:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 388 transitions. [2021-12-21 13:12:05,485 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 388 transitions. Word has length 87 [2021-12-21 13:12:05,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:05,485 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 388 transitions. [2021-12-21 13:12:05,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 388 transitions. [2021-12-21 13:12:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 13:12:05,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:05,491 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:05,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 13:12:05,711 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 [2021-12-21 13:12:05,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash -153867190, now seen corresponding path program 1 times [2021-12-21 13:12:05,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:05,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342241423] [2021-12-21 13:12:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:05,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 13:12:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:12:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:12:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:12:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:05,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:05,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342241423] [2021-12-21 13:12:05,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342241423] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:05,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136258738] [2021-12-21 13:12:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:05,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:05,804 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) [2021-12-21 13:12:05,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:12:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:12:06,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 13:12:06,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:06,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136258738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:06,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:06,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-21 13:12:06,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150763557] [2021-12-21 13:12:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:06,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:12:06,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:12:06,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:06,149 INFO L87 Difference]: Start difference. First operand 257 states and 388 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:06,168 INFO L93 Difference]: Finished difference Result 539 states and 827 transitions. [2021-12-21 13:12:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:12:06,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2021-12-21 13:12:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:06,174 INFO L225 Difference]: With dead ends: 539 [2021-12-21 13:12:06,174 INFO L226 Difference]: Without dead ends: 309 [2021-12-21 13:12:06,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:12:06,176 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 99 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 744 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 [2021-12-21 13:12:06,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 744 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-21 13:12:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 301. [2021-12-21 13:12:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 235 states have (on average 1.553191489361702) internal successors, (365), 238 states have internal predecessors, (365), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-21 13:12:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 464 transitions. [2021-12-21 13:12:06,195 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 464 transitions. Word has length 93 [2021-12-21 13:12:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:06,196 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 464 transitions. [2021-12-21 13:12:06,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 464 transitions. [2021-12-21 13:12:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 13:12:06,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:06,200 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:06,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:06,400 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 [2021-12-21 13:12:06,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:06,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:06,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1701782700, now seen corresponding path program 1 times [2021-12-21 13:12:06,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:06,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905812707] [2021-12-21 13:12:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:06,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:12:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:12:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:12:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:12:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:12:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:12:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:12:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:06,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:06,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905812707] [2021-12-21 13:12:06,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905812707] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951934641] [2021-12-21 13:12:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:06,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:06,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:06,527 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) [2021-12-21 13:12:06,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 13:12:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:06,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:12:06,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 13:12:06,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:06,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951934641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:06,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:06,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-21 13:12:06,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60539912] [2021-12-21 13:12:06,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:06,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:12:06,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:06,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:12:06,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:12:06,912 INFO L87 Difference]: Start difference. First operand 301 states and 464 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:06,958 INFO L93 Difference]: Finished difference Result 593 states and 918 transitions. [2021-12-21 13:12:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:12:06,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2021-12-21 13:12:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:06,961 INFO L225 Difference]: With dead ends: 593 [2021-12-21 13:12:06,961 INFO L226 Difference]: Without dead ends: 303 [2021-12-21 13:12:06,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:12:06,963 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 117 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1372 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 [2021-12-21 13:12:06,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1372 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:06,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-21 13:12:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-12-21 13:12:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 236 states have (on average 1.5508474576271187) internal successors, (366), 240 states have internal predecessors, (366), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2021-12-21 13:12:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 467 transitions. [2021-12-21 13:12:06,975 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 467 transitions. Word has length 94 [2021-12-21 13:12:06,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:06,975 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 467 transitions. [2021-12-21 13:12:06,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:06,975 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 467 transitions. [2021-12-21 13:12:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-21 13:12:06,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:06,977 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:06,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:07,195 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 [2021-12-21 13:12:07,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:07,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:07,195 INFO L85 PathProgramCache]: Analyzing trace with hash 361139953, now seen corresponding path program 1 times [2021-12-21 13:12:07,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:07,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068562400] [2021-12-21 13:12:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:07,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:12:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:12:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 13:12:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:12:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:12:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:12:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:12:07,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:07,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068562400] [2021-12-21 13:12:07,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068562400] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:07,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418730271] [2021-12-21 13:12:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:07,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:07,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:07,327 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) [2021-12-21 13:12:07,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 13:12:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 13:12:07,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-21 13:12:07,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:12:07,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418730271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:07,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:12:07,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-21 13:12:07,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729666040] [2021-12-21 13:12:07,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:07,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:12:07,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:12:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:12:07,658 INFO L87 Difference]: Start difference. First operand 303 states and 467 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:07,711 INFO L93 Difference]: Finished difference Result 595 states and 923 transitions. [2021-12-21 13:12:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:12:07,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2021-12-21 13:12:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:07,714 INFO L225 Difference]: With dead ends: 595 [2021-12-21 13:12:07,714 INFO L226 Difference]: Without dead ends: 305 [2021-12-21 13:12:07,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:12:07,716 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 116 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1361 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 [2021-12-21 13:12:07,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1361 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:12:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-21 13:12:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2021-12-21 13:12:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2021-12-21 13:12:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 473 transitions. [2021-12-21 13:12:07,729 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 473 transitions. Word has length 95 [2021-12-21 13:12:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:07,729 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 473 transitions. [2021-12-21 13:12:07,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 473 transitions. [2021-12-21 13:12:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 13:12:07,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:07,731 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:07,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:07,949 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 [2021-12-21 13:12:07,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash 639964823, now seen corresponding path program 1 times [2021-12-21 13:12:07,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998973524] [2021-12-21 13:12:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:07,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:12:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:12:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:12:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:12:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:12:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:08,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:08,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998973524] [2021-12-21 13:12:08,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998973524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:08,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:08,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:12:08,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244862311] [2021-12-21 13:12:08,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:08,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:12:08,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:08,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:12:08,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:12:08,042 INFO L87 Difference]: Start difference. First operand 305 states and 473 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:08,777 INFO L93 Difference]: Finished difference Result 640 states and 998 transitions. [2021-12-21 13:12:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:08,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2021-12-21 13:12:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:08,779 INFO L225 Difference]: With dead ends: 640 [2021-12-21 13:12:08,780 INFO L226 Difference]: Without dead ends: 358 [2021-12-21 13:12:08,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:12:08,781 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 676 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:08,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 1203 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:12:08,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-12-21 13:12:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 305. [2021-12-21 13:12:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-12-21 13:12:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 472 transitions. [2021-12-21 13:12:08,797 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 472 transitions. Word has length 96 [2021-12-21 13:12:08,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:08,797 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 472 transitions. [2021-12-21 13:12:08,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 472 transitions. [2021-12-21 13:12:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:12:08,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:08,799 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:08,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:12:08,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1163878910, now seen corresponding path program 2 times [2021-12-21 13:12:08,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:08,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803000712] [2021-12-21 13:12:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:08,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:12:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:12:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:12:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:12:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:12:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 13:12:08,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:08,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803000712] [2021-12-21 13:12:08,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803000712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:08,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:08,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:12:08,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264219952] [2021-12-21 13:12:08,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:08,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:12:08,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:08,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:12:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:12:08,896 INFO L87 Difference]: Start difference. First operand 305 states and 472 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:09,580 INFO L93 Difference]: Finished difference Result 642 states and 1001 transitions. [2021-12-21 13:12:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:12:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2021-12-21 13:12:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:09,583 INFO L225 Difference]: With dead ends: 642 [2021-12-21 13:12:09,583 INFO L226 Difference]: Without dead ends: 360 [2021-12-21 13:12:09,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:12:09,585 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 672 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:09,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 1204 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:12:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-21 13:12:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 307. [2021-12-21 13:12:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 238 states have (on average 1.546218487394958) internal successors, (368), 244 states have internal predecessors, (368), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2021-12-21 13:12:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 475 transitions. [2021-12-21 13:12:09,599 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 475 transitions. Word has length 97 [2021-12-21 13:12:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:09,599 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 475 transitions. [2021-12-21 13:12:09,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 13:12:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 475 transitions. [2021-12-21 13:12:09,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:12:09,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:09,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:09,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:12:09,601 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash -223956590, now seen corresponding path program 1 times [2021-12-21 13:12:09,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:09,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617209509] [2021-12-21 13:12:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:09,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:12:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:12:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:12:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:12:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:12:09,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:09,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617209509] [2021-12-21 13:12:09,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617209509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:09,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:09,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:12:09,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166966774] [2021-12-21 13:12:09,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:09,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:12:09,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:09,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:12:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:12:09,723 INFO L87 Difference]: Start difference. First operand 307 states and 475 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-21 13:12:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:10,751 INFO L93 Difference]: Finished difference Result 640 states and 996 transitions. [2021-12-21 13:12:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 13:12:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 98 [2021-12-21 13:12:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:10,753 INFO L225 Difference]: With dead ends: 640 [2021-12-21 13:12:10,753 INFO L226 Difference]: Without dead ends: 360 [2021-12-21 13:12:10,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:12:10,754 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 778 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:10,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 1574 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:12:10,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-21 13:12:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 307. [2021-12-21 13:12:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 238 states have (on average 1.546218487394958) internal successors, (368), 244 states have internal predecessors, (368), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2021-12-21 13:12:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 474 transitions. [2021-12-21 13:12:10,767 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 474 transitions. Word has length 98 [2021-12-21 13:12:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:10,768 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 474 transitions. [2021-12-21 13:12:10,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-21 13:12:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 474 transitions. [2021-12-21 13:12:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:12:10,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:10,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:10,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:12:10,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 749423346, now seen corresponding path program 2 times [2021-12-21 13:12:10,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:10,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250184698] [2021-12-21 13:12:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:10,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:12:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:12:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:12:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:12:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:12:10,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:10,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250184698] [2021-12-21 13:12:10,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250184698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:10,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:10,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:12:10,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759804251] [2021-12-21 13:12:10,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:10,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:12:10,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:10,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:12:10,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:12:10,876 INFO L87 Difference]: Start difference. First operand 307 states and 474 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-21 13:12:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:11,921 INFO L93 Difference]: Finished difference Result 642 states and 1002 transitions. [2021-12-21 13:12:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 13:12:11,921 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 99 [2021-12-21 13:12:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:11,923 INFO L225 Difference]: With dead ends: 642 [2021-12-21 13:12:11,923 INFO L226 Difference]: Without dead ends: 362 [2021-12-21 13:12:11,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:12:11,925 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 774 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:11,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 1575 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:12:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-21 13:12:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 309. [2021-12-21 13:12:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 239 states have (on average 1.5439330543933054) internal successors, (369), 246 states have internal predecessors, (369), 50 states have call successors, (50), 15 states have call predecessors, (50), 19 states have return successors, (61), 49 states have call predecessors, (61), 49 states have call successors, (61) [2021-12-21 13:12:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 480 transitions. [2021-12-21 13:12:11,938 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 480 transitions. Word has length 99 [2021-12-21 13:12:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:11,938 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 480 transitions. [2021-12-21 13:12:11,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-21 13:12:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 480 transitions. [2021-12-21 13:12:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-21 13:12:11,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:11,940 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:11,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:12:11,940 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash 961117165, now seen corresponding path program 1 times [2021-12-21 13:12:11,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:11,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098970044] [2021-12-21 13:12:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:11,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:11,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:12:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:12:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:12:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:12:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:12,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:12,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098970044] [2021-12-21 13:12:12,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098970044] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:12:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609987634] [2021-12-21 13:12:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:12,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:12:12,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:12:12,007 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) [2021-12-21 13:12:12,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 13:12:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:12,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:12:12,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:12:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:12,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:12:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:12,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609987634] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:12:12,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:12:12,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-21 13:12:12,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793504036] [2021-12-21 13:12:12,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:12:12,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 13:12:12,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 13:12:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:12,409 INFO L87 Difference]: Start difference. First operand 309 states and 480 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:12:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:13,395 INFO L93 Difference]: Finished difference Result 796 states and 1300 transitions. [2021-12-21 13:12:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:12:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2021-12-21 13:12:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:13,400 INFO L225 Difference]: With dead ends: 796 [2021-12-21 13:12:13,400 INFO L226 Difference]: Without dead ends: 689 [2021-12-21 13:12:13,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:12:13,402 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 867 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:13,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 1899 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:12:13,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-12-21 13:12:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 612. [2021-12-21 13:12:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 478 states have (on average 1.604602510460251) internal successors, (767), 485 states have internal predecessors, (767), 114 states have call successors, (114), 15 states have call predecessors, (114), 19 states have return successors, (135), 113 states have call predecessors, (135), 113 states have call successors, (135) [2021-12-21 13:12:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1016 transitions. [2021-12-21 13:12:13,435 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1016 transitions. Word has length 100 [2021-12-21 13:12:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:13,436 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1016 transitions. [2021-12-21 13:12:13,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 7 states have internal predecessors, (91), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 13:12:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1016 transitions. [2021-12-21 13:12:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 13:12:13,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:13,439 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:13,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 13:12:13,661 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 [2021-12-21 13:12:13,661 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1027284112, now seen corresponding path program 1 times [2021-12-21 13:12:13,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:13,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766298196] [2021-12-21 13:12:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:13,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:12:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:12:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:12:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:12:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:13,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:13,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766298196] [2021-12-21 13:12:13,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766298196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:13,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:13,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:13,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813222785] [2021-12-21 13:12:13,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:13,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:13,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:13,759 INFO L87 Difference]: Start difference. First operand 612 states and 1016 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:14,319 INFO L93 Difference]: Finished difference Result 1517 states and 2579 transitions. [2021-12-21 13:12:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:14,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2021-12-21 13:12:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:14,325 INFO L225 Difference]: With dead ends: 1517 [2021-12-21 13:12:14,325 INFO L226 Difference]: Without dead ends: 973 [2021-12-21 13:12:14,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:14,328 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 665 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:14,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1011 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:12:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-12-21 13:12:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 912. [2021-12-21 13:12:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 714 states have (on average 1.6134453781512605) internal successors, (1152), 721 states have internal predecessors, (1152), 178 states have call successors, (178), 15 states have call predecessors, (178), 19 states have return successors, (209), 177 states have call predecessors, (209), 177 states have call successors, (209) [2021-12-21 13:12:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1539 transitions. [2021-12-21 13:12:14,369 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1539 transitions. Word has length 106 [2021-12-21 13:12:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:14,369 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1539 transitions. [2021-12-21 13:12:14,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1539 transitions. [2021-12-21 13:12:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-21 13:12:14,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:14,373 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:14,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:12:14,373 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1707978199, now seen corresponding path program 1 times [2021-12-21 13:12:14,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:14,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544773678] [2021-12-21 13:12:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:14,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:12:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:12:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:12:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:12:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:14,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:14,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544773678] [2021-12-21 13:12:14,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544773678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:14,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:14,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:14,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527755223] [2021-12-21 13:12:14,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:14,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:14,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:14,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:14,463 INFO L87 Difference]: Start difference. First operand 912 states and 1539 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:15,045 INFO L93 Difference]: Finished difference Result 2232 states and 3824 transitions. [2021-12-21 13:12:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:15,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2021-12-21 13:12:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:15,052 INFO L225 Difference]: With dead ends: 2232 [2021-12-21 13:12:15,052 INFO L226 Difference]: Without dead ends: 1441 [2021-12-21 13:12:15,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:15,056 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 663 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:15,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1009 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:12:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2021-12-21 13:12:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1380. [2021-12-21 13:12:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1087 states have (on average 1.6182152713891444) internal successors, (1759), 1094 states have internal predecessors, (1759), 273 states have call successors, (273), 15 states have call predecessors, (273), 19 states have return successors, (304), 272 states have call predecessors, (304), 272 states have call successors, (304) [2021-12-21 13:12:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2336 transitions. [2021-12-21 13:12:15,133 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2336 transitions. Word has length 107 [2021-12-21 13:12:15,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:15,133 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 2336 transitions. [2021-12-21 13:12:15,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2336 transitions. [2021-12-21 13:12:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 13:12:15,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:15,138 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:15,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:12:15,139 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:15,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1136510194, now seen corresponding path program 1 times [2021-12-21 13:12:15,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:15,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274916043] [2021-12-21 13:12:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:15,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:12:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:12:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:12:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:12:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:15,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:15,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274916043] [2021-12-21 13:12:15,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274916043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:15,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:15,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:15,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236627068] [2021-12-21 13:12:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:15,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:15,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:15,197 INFO L87 Difference]: Start difference. First operand 1380 states and 2336 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:15,741 INFO L93 Difference]: Finished difference Result 3279 states and 5665 transitions. [2021-12-21 13:12:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2021-12-21 13:12:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:15,751 INFO L225 Difference]: With dead ends: 3279 [2021-12-21 13:12:15,751 INFO L226 Difference]: Without dead ends: 2145 [2021-12-21 13:12:15,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:15,756 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 661 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:15,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 987 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:12:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2021-12-21 13:12:15,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2084. [2021-12-21 13:12:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1668 states have (on average 1.6223021582733812) internal successors, (2706), 1675 states have internal predecessors, (2706), 396 states have call successors, (396), 15 states have call predecessors, (396), 19 states have return successors, (443), 395 states have call predecessors, (443), 395 states have call successors, (443) [2021-12-21 13:12:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3545 transitions. [2021-12-21 13:12:15,843 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3545 transitions. Word has length 108 [2021-12-21 13:12:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:15,844 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 3545 transitions. [2021-12-21 13:12:15,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:15,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3545 transitions. [2021-12-21 13:12:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 13:12:15,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:15,850 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:15,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:12:15,850 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash -665915704, now seen corresponding path program 1 times [2021-12-21 13:12:15,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:15,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020145313] [2021-12-21 13:12:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:15,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:12:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:12:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:12:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:12:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:15,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:15,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020145313] [2021-12-21 13:12:15,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020145313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:15,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:15,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:15,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52867127] [2021-12-21 13:12:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:15,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:15,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:15,925 INFO L87 Difference]: Start difference. First operand 2084 states and 3545 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:16,505 INFO L93 Difference]: Finished difference Result 4898 states and 8519 transitions. [2021-12-21 13:12:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2021-12-21 13:12:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:16,520 INFO L225 Difference]: With dead ends: 4898 [2021-12-21 13:12:16,520 INFO L226 Difference]: Without dead ends: 3264 [2021-12-21 13:12:16,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:16,527 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 659 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:16,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 981 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:12:16,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2021-12-21 13:12:16,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3203. [2021-12-21 13:12:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 2608 states have (on average 1.624616564417178) internal successors, (4237), 2615 states have internal predecessors, (4237), 575 states have call successors, (575), 15 states have call predecessors, (575), 19 states have return successors, (648), 574 states have call predecessors, (648), 574 states have call successors, (648) [2021-12-21 13:12:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5460 transitions. [2021-12-21 13:12:16,679 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5460 transitions. Word has length 109 [2021-12-21 13:12:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:16,679 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 5460 transitions. [2021-12-21 13:12:16,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5460 transitions. [2021-12-21 13:12:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-21 13:12:16,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:16,686 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:16,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:12:16,686 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:16,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1938092110, now seen corresponding path program 1 times [2021-12-21 13:12:16,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:16,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847899381] [2021-12-21 13:12:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:16,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:12:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:12:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:12:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:12:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:16,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:16,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847899381] [2021-12-21 13:12:16,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847899381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:16,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:16,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:16,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143392669] [2021-12-21 13:12:16,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:16,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:16,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:16,754 INFO L87 Difference]: Start difference. First operand 3203 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:17,397 INFO L93 Difference]: Finished difference Result 7816 states and 13618 transitions. [2021-12-21 13:12:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:17,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2021-12-21 13:12:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:17,422 INFO L225 Difference]: With dead ends: 7816 [2021-12-21 13:12:17,423 INFO L226 Difference]: Without dead ends: 5295 [2021-12-21 13:12:17,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:17,434 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 657 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:17,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1033 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:12:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2021-12-21 13:12:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5234. [2021-12-21 13:12:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 4263 states have (on average 1.615998123387286) internal successors, (6889), 4270 states have internal predecessors, (6889), 951 states have call successors, (951), 15 states have call predecessors, (951), 19 states have return successors, (1068), 950 states have call predecessors, (1068), 950 states have call successors, (1068) [2021-12-21 13:12:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8908 transitions. [2021-12-21 13:12:17,689 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8908 transitions. Word has length 110 [2021-12-21 13:12:17,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:17,690 INFO L470 AbstractCegarLoop]: Abstraction has 5234 states and 8908 transitions. [2021-12-21 13:12:17,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:17,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8908 transitions. [2021-12-21 13:12:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 13:12:17,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:17,699 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:17,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:12:17,700 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash -461540828, now seen corresponding path program 1 times [2021-12-21 13:12:17,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:17,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947167384] [2021-12-21 13:12:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:17,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:12:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:12:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:12:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:12:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:17,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947167384] [2021-12-21 13:12:17,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947167384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:17,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:17,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:17,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426730541] [2021-12-21 13:12:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:17,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:17,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:17,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:17,767 INFO L87 Difference]: Start difference. First operand 5234 states and 8908 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:18,486 INFO L93 Difference]: Finished difference Result 12958 states and 22527 transitions. [2021-12-21 13:12:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:18,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 111 [2021-12-21 13:12:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:18,530 INFO L225 Difference]: With dead ends: 12958 [2021-12-21 13:12:18,530 INFO L226 Difference]: Without dead ends: 8783 [2021-12-21 13:12:18,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:18,544 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 655 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:18,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 986 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:12:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8783 states. [2021-12-21 13:12:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8783 to 8722. [2021-12-21 13:12:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8722 states, 7145 states have (on average 1.6127361791462562) internal successors, (11523), 7152 states have internal predecessors, (11523), 1557 states have call successors, (1557), 15 states have call predecessors, (1557), 19 states have return successors, (1752), 1556 states have call predecessors, (1752), 1556 states have call successors, (1752) [2021-12-21 13:12:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8722 states to 8722 states and 14832 transitions. [2021-12-21 13:12:18,962 INFO L78 Accepts]: Start accepts. Automaton has 8722 states and 14832 transitions. Word has length 111 [2021-12-21 13:12:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:18,963 INFO L470 AbstractCegarLoop]: Abstraction has 8722 states and 14832 transitions. [2021-12-21 13:12:18,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 8722 states and 14832 transitions. [2021-12-21 13:12:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 13:12:18,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:18,974 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:18,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:12:18,974 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:18,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1120917424, now seen corresponding path program 1 times [2021-12-21 13:12:18,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:18,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215775101] [2021-12-21 13:12:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:18,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:12:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:12:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:12:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:12:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:19,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215775101] [2021-12-21 13:12:19,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215775101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:19,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:19,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:19,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143825948] [2021-12-21 13:12:19,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:19,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:19,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:19,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:19,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:19,045 INFO L87 Difference]: Start difference. First operand 8722 states and 14832 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:20,015 INFO L93 Difference]: Finished difference Result 22617 states and 39233 transitions. [2021-12-21 13:12:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:20,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 112 [2021-12-21 13:12:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:20,063 INFO L225 Difference]: With dead ends: 22617 [2021-12-21 13:12:20,064 INFO L226 Difference]: Without dead ends: 15376 [2021-12-21 13:12:20,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:20,087 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 653 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:20,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1017 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:12:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2021-12-21 13:12:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 15315. [2021-12-21 13:12:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15315 states, 12535 states have (on average 1.6026326286398085) internal successors, (20089), 12542 states have internal predecessors, (20089), 2760 states have call successors, (2760), 15 states have call predecessors, (2760), 19 states have return successors, (3099), 2759 states have call predecessors, (3099), 2759 states have call successors, (3099) [2021-12-21 13:12:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15315 states to 15315 states and 25948 transitions. [2021-12-21 13:12:20,843 INFO L78 Accepts]: Start accepts. Automaton has 15315 states and 25948 transitions. Word has length 112 [2021-12-21 13:12:20,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:20,844 INFO L470 AbstractCegarLoop]: Abstraction has 15315 states and 25948 transitions. [2021-12-21 13:12:20,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 15315 states and 25948 transitions. [2021-12-21 13:12:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 13:12:20,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:20,859 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:20,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:12:20,859 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2139517149, now seen corresponding path program 1 times [2021-12-21 13:12:20,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:20,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130503435] [2021-12-21 13:12:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:20,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:12:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:12:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:12:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:12:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:20,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:20,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130503435] [2021-12-21 13:12:20,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130503435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:20,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:20,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:20,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212705993] [2021-12-21 13:12:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:20,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:20,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:20,925 INFO L87 Difference]: Start difference. First operand 15315 states and 25948 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:22,175 INFO L93 Difference]: Finished difference Result 40573 states and 70216 transitions. [2021-12-21 13:12:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2021-12-21 13:12:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:22,277 INFO L225 Difference]: With dead ends: 40573 [2021-12-21 13:12:22,277 INFO L226 Difference]: Without dead ends: 27346 [2021-12-21 13:12:22,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:22,308 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 651 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:22,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 992 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:12:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27346 states. [2021-12-21 13:12:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27346 to 27285. [2021-12-21 13:12:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27285 states, 22466 states have (on average 1.5978367310602688) internal successors, (35897), 22473 states have internal predecessors, (35897), 4799 states have call successors, (4799), 15 states have call predecessors, (4799), 19 states have return successors, (5412), 4798 states have call predecessors, (5412), 4798 states have call successors, (5412) [2021-12-21 13:12:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27285 states to 27285 states and 46108 transitions. [2021-12-21 13:12:23,599 INFO L78 Accepts]: Start accepts. Automaton has 27285 states and 46108 transitions. Word has length 113 [2021-12-21 13:12:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:23,600 INFO L470 AbstractCegarLoop]: Abstraction has 27285 states and 46108 transitions. [2021-12-21 13:12:23,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 27285 states and 46108 transitions. [2021-12-21 13:12:23,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 13:12:23,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:23,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:23,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:12:23,618 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash 345033870, now seen corresponding path program 1 times [2021-12-21 13:12:23,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:23,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146913481] [2021-12-21 13:12:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:23,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:12:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:12:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:12:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:12:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:23,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:23,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146913481] [2021-12-21 13:12:23,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146913481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:23,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:23,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:23,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776260532] [2021-12-21 13:12:23,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:23,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:23,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:23,682 INFO L87 Difference]: Start difference. First operand 27285 states and 46108 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:25,653 INFO L93 Difference]: Finished difference Result 74360 states and 127815 transitions. [2021-12-21 13:12:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 114 [2021-12-21 13:12:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:25,857 INFO L225 Difference]: With dead ends: 74360 [2021-12-21 13:12:25,857 INFO L226 Difference]: Without dead ends: 49895 [2021-12-21 13:12:25,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:25,925 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 649 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:25,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 994 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:12:25,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49895 states. [2021-12-21 13:12:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49895 to 49834. [2021-12-21 13:12:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49834 states, 41300 states have (on average 1.5917191283292977) internal successors, (65738), 41307 states have internal predecessors, (65738), 8514 states have call successors, (8514), 15 states have call predecessors, (8514), 19 states have return successors, (9659), 8513 states have call predecessors, (9659), 8513 states have call successors, (9659) [2021-12-21 13:12:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49834 states to 49834 states and 83911 transitions. [2021-12-21 13:12:28,254 INFO L78 Accepts]: Start accepts. Automaton has 49834 states and 83911 transitions. Word has length 114 [2021-12-21 13:12:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:28,255 INFO L470 AbstractCegarLoop]: Abstraction has 49834 states and 83911 transitions. [2021-12-21 13:12:28,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 49834 states and 83911 transitions. [2021-12-21 13:12:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-21 13:12:28,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:28,274 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:28,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:12:28,274 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash 866966051, now seen corresponding path program 1 times [2021-12-21 13:12:28,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:28,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211680352] [2021-12-21 13:12:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:28,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:12:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:12:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:12:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:12:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:28,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:28,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211680352] [2021-12-21 13:12:28,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211680352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:28,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:28,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:12:28,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975624690] [2021-12-21 13:12:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:28,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:12:28,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:12:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:12:28,345 INFO L87 Difference]: Start difference. First operand 49834 states and 83911 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:31,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:31,515 INFO L93 Difference]: Finished difference Result 92846 states and 159946 transitions. [2021-12-21 13:12:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:12:31,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 115 [2021-12-21 13:12:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:31,859 INFO L225 Difference]: With dead ends: 92846 [2021-12-21 13:12:31,859 INFO L226 Difference]: Without dead ends: 92739 [2021-12-21 13:12:31,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:12:31,905 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 647 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:31,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 992 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:12:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92739 states. [2021-12-21 13:12:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92739 to 92678. [2021-12-21 13:12:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92678 states, 77345 states have (on average 1.5841230848794363) internal successors, (122524), 77352 states have internal predecessors, (122524), 15313 states have call successors, (15313), 15 states have call predecessors, (15313), 19 states have return successors, (17504), 15312 states have call predecessors, (17504), 15312 states have call successors, (17504) [2021-12-21 13:12:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92678 states to 92678 states and 155341 transitions. [2021-12-21 13:12:36,100 INFO L78 Accepts]: Start accepts. Automaton has 92678 states and 155341 transitions. Word has length 115 [2021-12-21 13:12:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:36,100 INFO L470 AbstractCegarLoop]: Abstraction has 92678 states and 155341 transitions. [2021-12-21 13:12:36,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 13:12:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 92678 states and 155341 transitions. [2021-12-21 13:12:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 13:12:36,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:36,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:36,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:12:36,121 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1101885455, now seen corresponding path program 1 times [2021-12-21 13:12:36,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:36,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404225105] [2021-12-21 13:12:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:36,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:12:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:12:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:12:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:12:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:36,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:36,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404225105] [2021-12-21 13:12:36,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404225105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:36,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:36,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-21 13:12:36,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130082455] [2021-12-21 13:12:36,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:36,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 13:12:36,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:36,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 13:12:36,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:12:36,265 INFO L87 Difference]: Start difference. First operand 92678 states and 155341 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-21 13:12:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:12:44,437 INFO L93 Difference]: Finished difference Result 185071 states and 322138 transitions. [2021-12-21 13:12:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-21 13:12:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 116 [2021-12-21 13:12:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:12:45,321 INFO L225 Difference]: With dead ends: 185071 [2021-12-21 13:12:45,322 INFO L226 Difference]: Without dead ends: 184972 [2021-12-21 13:12:45,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=453, Invalid=1527, Unknown=0, NotChecked=0, Total=1980 [2021-12-21 13:12:45,393 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 2631 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 5044 mSolverCounterSat, 1103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2631 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 6147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1103 IncrementalHoareTripleChecker+Valid, 5044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:12:45,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2631 Valid, 2837 Invalid, 6147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1103 Valid, 5044 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 13:12:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184972 states. [2021-12-21 13:12:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184972 to 184542. [2021-12-21 13:12:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184542 states, 154089 states have (on average 1.5850774552369085) internal successors, (244243), 153991 states have internal predecessors, (244243), 30409 states have call successors, (30409), 38 states have call predecessors, (30409), 43 states have return successors, (38058), 30518 states have call predecessors, (38058), 30406 states have call successors, (38058) [2021-12-21 13:12:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184542 states to 184542 states and 312710 transitions. [2021-12-21 13:12:54,116 INFO L78 Accepts]: Start accepts. Automaton has 184542 states and 312710 transitions. Word has length 116 [2021-12-21 13:12:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:12:54,116 INFO L470 AbstractCegarLoop]: Abstraction has 184542 states and 312710 transitions. [2021-12-21 13:12:54,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-21 13:12:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 184542 states and 312710 transitions. [2021-12-21 13:12:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 13:12:54,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:12:54,149 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:12:54,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 13:12:54,149 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:12:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:12:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash 912607469, now seen corresponding path program 1 times [2021-12-21 13:12:54,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:12:54,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574621567] [2021-12-21 13:12:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:12:54,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:12:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:12:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:12:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:12:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:12:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:12:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:12:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:12:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:12:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:12:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:12:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:12:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:12:54,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:12:54,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574621567] [2021-12-21 13:12:54,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574621567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:12:54,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:12:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:12:54,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128036632] [2021-12-21 13:12:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:12:54,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:12:54,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:12:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:12:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:12:54,222 INFO L87 Difference]: Start difference. First operand 184542 states and 312710 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)