./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_spec1_product16.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 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:33:46,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:33:46,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:33:46,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:33:46,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:33:46,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:33:46,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:33:46,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:33:46,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:33:46,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:33:46,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:33:46,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:33:46,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:33:46,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:33:46,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:33:46,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:33:46,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:33:46,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:33:46,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:33:46,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:33:46,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:33:46,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:33:46,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:33:46,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:33:46,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:33:46,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:33:46,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:33:46,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:33:46,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:33:46,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:33:46,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:33:46,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:33:46,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:33:46,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:33:46,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:33:46,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:33:46,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:33:46,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:33:46,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:33:46,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:33:46,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:33:46,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:33:46,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:33:46,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:33:46,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:33:46,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:33:46,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:33:46,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:33:46,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:33:46,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:33:46,651 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:33:46,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:33:46,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:33:46,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:33:46,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:33:46,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:33:46,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:33:46,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:33:46,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:33:46,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:33:46,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:33:46,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:33:46,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:33:46,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:33:46,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:33:46,656 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:33:46,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:33:46,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:33:46,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:33:46,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8953ac6143780bf628ca2bf650b2a5c9b00061ee3dd80e32fadc01758229df18 [2021-12-14 14:33:46,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:33:46,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:33:46,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:33:46,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:33:46,888 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:33:46,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2021-12-14 14:33:46,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc7e5f0d3/1051d236c25e471781eacec5085d4701/FLAGdf1827237 [2021-12-14 14:33:47,399 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:33:47,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product16.cil.c [2021-12-14 14:33:47,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc7e5f0d3/1051d236c25e471781eacec5085d4701/FLAGdf1827237 [2021-12-14 14:33:47,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc7e5f0d3/1051d236c25e471781eacec5085d4701 [2021-12-14 14:33:47,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:33:47,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:33:47,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:33:47,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:33:47,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:33:47,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:33:47" (1/1) ... [2021-12-14 14:33:47,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77802c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:47, skipping insertion in model container [2021-12-14 14:33:47,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:33:47" (1/1) ... [2021-12-14 14:33:47,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:33:47,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:33:47,774 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_spec1_product16.cil.c[36116,36129] [2021-12-14 14:33:47,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:33:47,883 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:33:47,946 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_spec1_product16.cil.c[36116,36129] [2021-12-14 14:33:47,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:33:48,010 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:33:48,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48 WrapperNode [2021-12-14 14:33:48,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:33:48,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:33:48,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:33:48,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:33:48,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,069 INFO L137 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 56, calls inlined = 51, statements flattened = 980 [2021-12-14 14:33:48,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:33:48,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:33:48,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:33:48,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:33:48,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:33:48,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:33:48,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:33:48,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:33:48,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (1/1) ... [2021-12-14 14:33:48,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:33:48,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:33:48,134 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) [2021-12-14 14:33:48,147 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 [2021-12-14 14:33:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-14 14:33:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-14 14:33:48,177 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-14 14:33:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-14 14:33:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-14 14:33:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-14 14:33:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-14 14:33:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-14 14:33:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-14 14:33:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:33:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-14 14:33:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-14 14:33:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-14 14:33:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-14 14:33:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-14 14:33:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-14 14:33:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-14 14:33:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-14 14:33:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-14 14:33:48,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:33:48,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:33:48,312 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:33:48,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:33:48,732 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:33:48,745 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:33:48,746 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:33:48,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:33:48 BoogieIcfgContainer [2021-12-14 14:33:48,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:33:48,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:33:48,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:33:48,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:33:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:33:47" (1/3) ... [2021-12-14 14:33:48,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a1ef54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:33:48, skipping insertion in model container [2021-12-14 14:33:48,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:33:48" (2/3) ... [2021-12-14 14:33:48,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a1ef54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:33:48, skipping insertion in model container [2021-12-14 14:33:48,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:33:48" (3/3) ... [2021-12-14 14:33:48,755 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product16.cil.c [2021-12-14 14:33:48,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:33:48,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:33:48,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:33:48,813 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 [2021-12-14 14:33:48,814 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:33:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 235 states have (on average 1.5361702127659576) internal successors, (361), 239 states have internal predecessors, (361), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-14 14:33:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-14 14:33:48,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:48,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:48,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:48,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 56806197, now seen corresponding path program 1 times [2021-12-14 14:33:48,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:48,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205584049] [2021-12-14 14:33:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:48,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:33:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:33:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:33:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:33:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 14:33:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:33:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:33:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:33:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 14:33:49,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205584049] [2021-12-14 14:33:49,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205584049] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:33:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902473235] [2021-12-14 14:33:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:49,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:33:49,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:33:49,332 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) [2021-12-14 14:33:49,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:33:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:49,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 14:33:49,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:33:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:33:49,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:33:49,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902473235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:49,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:33:49,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-14 14:33:49,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108110831] [2021-12-14 14:33:49,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:49,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:33:49,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:33:49,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:33:49,788 INFO L87 Difference]: Start difference. First operand has 298 states, 235 states have (on average 1.5361702127659576) internal successors, (361), 239 states have internal predecessors, (361), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:33:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:49,819 INFO L93 Difference]: Finished difference Result 442 states and 656 transitions. [2021-12-14 14:33:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:33:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2021-12-14 14:33:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:49,831 INFO L225 Difference]: With dead ends: 442 [2021-12-14 14:33:49,831 INFO L226 Difference]: Without dead ends: 291 [2021-12-14 14:33:49,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:33:49,838 INFO L933 BasicCegarLoop]: 447 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, 447 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 [2021-12-14 14:33:49,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:33:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-14 14:33:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-12-14 14:33:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 229 states have (on average 1.5283842794759825) internal successors, (350), 232 states have internal predecessors, (350), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-14 14:33:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 439 transitions. [2021-12-14 14:33:49,939 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 439 transitions. Word has length 89 [2021-12-14 14:33:49,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:49,941 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 439 transitions. [2021-12-14 14:33:49,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:33:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 439 transitions. [2021-12-14 14:33:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-14 14:33:49,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:49,947 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:49,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:33:50,163 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 [2021-12-14 14:33:50,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:50,164 INFO L85 PathProgramCache]: Analyzing trace with hash -774067971, now seen corresponding path program 1 times [2021-12-14 14:33:50,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:50,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426730470] [2021-12-14 14:33:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:50,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:33:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:33:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:33:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 14:33:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 14:33:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:33:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:33:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:33:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 14:33:50,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:50,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426730470] [2021-12-14 14:33:50,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426730470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:33:50,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044479206] [2021-12-14 14:33:50,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:50,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:33:50,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:33:50,274 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) [2021-12-14 14:33:50,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:33:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 14:33:50,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:33:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:33:50,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:33:50,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044479206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:50,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:33:50,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:33:50,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893431063] [2021-12-14 14:33:50,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:50,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:33:50,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:33:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:33:50,608 INFO L87 Difference]: Start difference. First operand 291 states and 439 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:33:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:50,631 INFO L93 Difference]: Finished difference Result 432 states and 637 transitions. [2021-12-14 14:33:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:33:50,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2021-12-14 14:33:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:50,634 INFO L225 Difference]: With dead ends: 432 [2021-12-14 14:33:50,634 INFO L226 Difference]: Without dead ends: 294 [2021-12-14 14:33:50,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:33:50,636 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 1 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 872 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 [2021-12-14 14:33:50,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 872 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:33:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-14 14:33:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2021-12-14 14:33:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 231 states have (on average 1.5238095238095237) internal successors, (352), 234 states have internal predecessors, (352), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-14 14:33:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 441 transitions. [2021-12-14 14:33:50,647 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 441 transitions. Word has length 90 [2021-12-14 14:33:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:50,648 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 441 transitions. [2021-12-14 14:33:50,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:33:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 441 transitions. [2021-12-14 14:33:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-14 14:33:50,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:50,649 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:50,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 14:33:50,857 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 [2021-12-14 14:33:50,857 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash 232109862, now seen corresponding path program 1 times [2021-12-14 14:33:50,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:50,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676712870] [2021-12-14 14:33:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:50,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:33:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:33:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:33:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 14:33:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:33:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:33:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:33:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:33:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:33:50,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:50,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676712870] [2021-12-14 14:33:50,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676712870] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:33:50,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619264785] [2021-12-14 14:33:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:50,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:33:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:33:51,001 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) [2021-12-14 14:33:51,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:33:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:33:51,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:33:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:33:51,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:33:51,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619264785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:51,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:33:51,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-14 14:33:51,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836379385] [2021-12-14 14:33:51,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:51,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:33:51,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:51,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:33:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:33:51,302 INFO L87 Difference]: Start difference. First operand 293 states and 441 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:33:51,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:51,321 INFO L93 Difference]: Finished difference Result 616 states and 941 transitions. [2021-12-14 14:33:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:33:51,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2021-12-14 14:33:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:51,325 INFO L225 Difference]: With dead ends: 616 [2021-12-14 14:33:51,325 INFO L226 Difference]: Without dead ends: 350 [2021-12-14 14:33:51,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:33:51,328 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 107 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 845 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 [2021-12-14 14:33:51,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 845 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:33:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-14 14:33:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2021-12-14 14:33:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 269 states have (on average 1.5390334572490707) internal successors, (414), 272 states have internal predecessors, (414), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-14 14:33:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 525 transitions. [2021-12-14 14:33:51,341 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 525 transitions. Word has length 96 [2021-12-14 14:33:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:51,341 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 525 transitions. [2021-12-14 14:33:51,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:33:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 525 transitions. [2021-12-14 14:33:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-14 14:33:51,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:51,343 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:51,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 14:33:51,561 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 [2021-12-14 14:33:51,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:51,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1191161156, now seen corresponding path program 1 times [2021-12-14 14:33:51,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:51,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355480790] [2021-12-14 14:33:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:51,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:33:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:33:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:33:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 14:33:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:33:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:33:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:33:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:33:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:33:51,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:51,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355480790] [2021-12-14 14:33:51,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355480790] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:33:51,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226849478] [2021-12-14 14:33:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:51,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:33:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:33:51,655 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) [2021-12-14 14:33:51,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:33:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:51,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 14:33:51,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:33:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-14 14:33:51,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:33:51,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226849478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:51,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:33:51,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-14 14:33:51,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002067955] [2021-12-14 14:33:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:51,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:33:51,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:33:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:33:51,980 INFO L87 Difference]: Start difference. First operand 342 states and 525 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:52,022 INFO L93 Difference]: Finished difference Result 675 states and 1040 transitions. [2021-12-14 14:33:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:33:52,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2021-12-14 14:33:52,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:52,025 INFO L225 Difference]: With dead ends: 675 [2021-12-14 14:33:52,025 INFO L226 Difference]: Without dead ends: 344 [2021-12-14 14:33:52,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:33:52,027 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 125 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1576 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 [2021-12-14 14:33:52,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1576 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:33:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-14 14:33:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-12-14 14:33:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 270 states have (on average 1.537037037037037) internal successors, (415), 274 states have internal predecessors, (415), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 55 states have call successors, (57) [2021-12-14 14:33:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 528 transitions. [2021-12-14 14:33:52,038 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 528 transitions. Word has length 97 [2021-12-14 14:33:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:52,038 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 528 transitions. [2021-12-14 14:33:52,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 528 transitions. [2021-12-14 14:33:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-14 14:33:52,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:52,056 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:52,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:33:52,256 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 [2021-12-14 14:33:52,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash 77511015, now seen corresponding path program 1 times [2021-12-14 14:33:52,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:52,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235060144] [2021-12-14 14:33:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:52,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:33:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 14:33:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 14:33:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 14:33:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:33:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:33:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:33:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:33:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 14:33:52,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:52,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235060144] [2021-12-14 14:33:52,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235060144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:33:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916452177] [2021-12-14 14:33:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:52,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:33:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:33:52,374 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) [2021-12-14 14:33:52,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:33:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:52,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 14:33:52,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:33:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-14 14:33:52,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:33:52,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916452177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:52,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:33:52,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-14 14:33:52,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864713326] [2021-12-14 14:33:52,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:52,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:33:52,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:52,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:33:52,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:33:52,689 INFO L87 Difference]: Start difference. First operand 344 states and 528 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:52,736 INFO L93 Difference]: Finished difference Result 677 states and 1045 transitions. [2021-12-14 14:33:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:33:52,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2021-12-14 14:33:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:52,739 INFO L225 Difference]: With dead ends: 677 [2021-12-14 14:33:52,739 INFO L226 Difference]: Without dead ends: 346 [2021-12-14 14:33:52,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:33:52,742 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 124 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1565 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 [2021-12-14 14:33:52,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1565 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:33:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-12-14 14:33:52,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-12-14 14:33:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 276 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-14 14:33:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 534 transitions. [2021-12-14 14:33:52,759 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 534 transitions. Word has length 98 [2021-12-14 14:33:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:52,760 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 534 transitions. [2021-12-14 14:33:52,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 534 transitions. [2021-12-14 14:33:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-14 14:33:52,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:52,761 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] [2021-12-14 14:33:52,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 14:33:52,975 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 [2021-12-14 14:33:52,976 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash -807330812, now seen corresponding path program 1 times [2021-12-14 14:33:52,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:52,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309069893] [2021-12-14 14:33:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:52,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:33:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:33:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 14:33:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 14:33:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 14:33:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:33:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:33:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:33:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:33:53,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:53,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309069893] [2021-12-14 14:33:53,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309069893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:53,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:33:53,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:33:53,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619986191] [2021-12-14 14:33:53,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:53,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:33:53,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:33:53,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:33:53,092 INFO L87 Difference]: Start difference. First operand 346 states and 534 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:54,386 INFO L93 Difference]: Finished difference Result 816 states and 1258 transitions. [2021-12-14 14:33:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:33:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-14 14:33:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:54,389 INFO L225 Difference]: With dead ends: 816 [2021-12-14 14:33:54,390 INFO L226 Difference]: Without dead ends: 493 [2021-12-14 14:33:54,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:33:54,391 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1019 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:33:54,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 1579 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:33:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-14 14:33:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 346. [2021-12-14 14:33:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 276 states have internal predecessors, (416), 56 states have call successors, (56), 16 states have call predecessors, (56), 18 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2021-12-14 14:33:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 533 transitions. [2021-12-14 14:33:54,409 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 533 transitions. Word has length 99 [2021-12-14 14:33:54,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:54,409 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 533 transitions. [2021-12-14 14:33:54,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 533 transitions. [2021-12-14 14:33:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-14 14:33:54,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:54,411 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:54,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 14:33:54,411 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash -805719347, now seen corresponding path program 2 times [2021-12-14 14:33:54,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:54,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246357704] [2021-12-14 14:33:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:54,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:33:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:33:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 14:33:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:33:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 14:33:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:33:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:33:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:33:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:33:54,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:54,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246357704] [2021-12-14 14:33:54,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246357704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:54,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:33:54,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 14:33:54,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142093638] [2021-12-14 14:33:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:54,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:33:54,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:33:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:33:54,496 INFO L87 Difference]: Start difference. First operand 346 states and 533 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:55,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:55,570 INFO L93 Difference]: Finished difference Result 818 states and 1261 transitions. [2021-12-14 14:33:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:33:55,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2021-12-14 14:33:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:55,573 INFO L225 Difference]: With dead ends: 818 [2021-12-14 14:33:55,574 INFO L226 Difference]: Without dead ends: 495 [2021-12-14 14:33:55,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:33:55,575 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1014 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 14:33:55,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1580 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 14:33:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-14 14:33:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348. [2021-12-14 14:33:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 278 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (63), 55 states have call predecessors, (63), 55 states have call successors, (63) [2021-12-14 14:33:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 536 transitions. [2021-12-14 14:33:55,601 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 536 transitions. Word has length 100 [2021-12-14 14:33:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:55,602 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 536 transitions. [2021-12-14 14:33:55,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 14:33:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 536 transitions. [2021-12-14 14:33:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-14 14:33:55,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:55,603 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:55,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 14:33:55,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1471237417, now seen corresponding path program 1 times [2021-12-14 14:33:55,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:55,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652339691] [2021-12-14 14:33:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:55,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:33:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:33:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:33:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:33:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 14:33:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:33:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:33:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:33:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 14:33:55,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:55,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652339691] [2021-12-14 14:33:55,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652339691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:55,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:33:55,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:33:55,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395219582] [2021-12-14 14:33:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:55,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:33:55,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:33:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:33:55,709 INFO L87 Difference]: Start difference. First operand 348 states and 536 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-14 14:33:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:57,286 INFO L93 Difference]: Finished difference Result 816 states and 1256 transitions. [2021-12-14 14:33:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:33:57,286 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 101 [2021-12-14 14:33:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:57,289 INFO L225 Difference]: With dead ends: 816 [2021-12-14 14:33:57,289 INFO L226 Difference]: Without dead ends: 495 [2021-12-14 14:33:57,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-14 14:33:57,291 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1126 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:33:57,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 2036 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:33:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-14 14:33:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348. [2021-12-14 14:33:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 278 states have internal predecessors, (417), 56 states have call successors, (56), 16 states have call predecessors, (56), 19 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2021-12-14 14:33:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 535 transitions. [2021-12-14 14:33:57,310 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 535 transitions. Word has length 101 [2021-12-14 14:33:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:57,311 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 535 transitions. [2021-12-14 14:33:57,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-14 14:33:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 535 transitions. [2021-12-14 14:33:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 14:33:57,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:57,312 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:57,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 14:33:57,313 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1244916972, now seen corresponding path program 2 times [2021-12-14 14:33:57,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:57,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265104273] [2021-12-14 14:33:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:57,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:33:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:33:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:33:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:33:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 14:33:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:33:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:33:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:33:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 14:33:57,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:57,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265104273] [2021-12-14 14:33:57,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265104273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:33:57,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:33:57,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 14:33:57,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89246358] [2021-12-14 14:33:57,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:33:57,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:33:57,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:33:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:33:57,438 INFO L87 Difference]: Start difference. First operand 348 states and 535 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-14 14:33:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:33:58,994 INFO L93 Difference]: Finished difference Result 818 states and 1262 transitions. [2021-12-14 14:33:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:33:58,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2021-12-14 14:33:58,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:33:58,997 INFO L225 Difference]: With dead ends: 818 [2021-12-14 14:33:58,997 INFO L226 Difference]: Without dead ends: 497 [2021-12-14 14:33:59,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-14 14:33:59,002 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1121 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:33:59,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2037 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:33:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-14 14:33:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350. [2021-12-14 14:33:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 273 states have (on average 1.531135531135531) internal successors, (418), 280 states have internal predecessors, (418), 56 states have call successors, (56), 16 states have call predecessors, (56), 20 states have return successors, (67), 55 states have call predecessors, (67), 55 states have call successors, (67) [2021-12-14 14:33:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 541 transitions. [2021-12-14 14:33:59,020 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 541 transitions. Word has length 102 [2021-12-14 14:33:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:33:59,021 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 541 transitions. [2021-12-14 14:33:59,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-14 14:33:59,022 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 541 transitions. [2021-12-14 14:33:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-14 14:33:59,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:33:59,023 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:33:59,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 14:33:59,023 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:33:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:33:59,024 INFO L85 PathProgramCache]: Analyzing trace with hash -74300082, now seen corresponding path program 1 times [2021-12-14 14:33:59,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:33:59,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696830139] [2021-12-14 14:33:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:59,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:33:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:33:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:33:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:33:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:33:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:33:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:33:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:33:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:33:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:33:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:33:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:33:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:33:59,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:33:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696830139] [2021-12-14 14:33:59,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696830139] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:33:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539063631] [2021-12-14 14:33:59,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:33:59,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:33:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:33:59,118 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) [2021-12-14 14:33:59,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:33:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:33:59,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:33:59,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:33:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:33:59,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:33:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:33:59,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539063631] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:33:59,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:33:59,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-14 14:33:59,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859748549] [2021-12-14 14:33:59,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:33:59,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:33:59,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:33:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:33:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:33:59,603 INFO L87 Difference]: Start difference. First operand 350 states and 541 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:34:01,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:01,039 INFO L93 Difference]: Finished difference Result 987 states and 1590 transitions. [2021-12-14 14:34:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 14:34:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2021-12-14 14:34:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:01,045 INFO L225 Difference]: With dead ends: 987 [2021-12-14 14:34:01,045 INFO L226 Difference]: Without dead ends: 849 [2021-12-14 14:34:01,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:34:01,047 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 1324 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:01,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 2079 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:34:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-12-14 14:34:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 678. [2021-12-14 14:34:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 537 states have (on average 1.5940409683426444) internal successors, (856), 544 states have internal predecessors, (856), 120 states have call successors, (120), 16 states have call predecessors, (120), 20 states have return successors, (141), 119 states have call predecessors, (141), 119 states have call successors, (141) [2021-12-14 14:34:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1117 transitions. [2021-12-14 14:34:01,121 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1117 transitions. Word has length 103 [2021-12-14 14:34:01,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:01,121 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 1117 transitions. [2021-12-14 14:34:01,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:34:01,121 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1117 transitions. [2021-12-14 14:34:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-14 14:34:01,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:01,123 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] [2021-12-14 14:34:01,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 14:34:01,324 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 [2021-12-14 14:34:01,324 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1454059765, now seen corresponding path program 1 times [2021-12-14 14:34:01,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:01,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140399339] [2021-12-14 14:34:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:01,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:34:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:34:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:34:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:34:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:34:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:01,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:01,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140399339] [2021-12-14 14:34:01,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140399339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:01,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:01,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:01,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190869338] [2021-12-14 14:34:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:01,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:01,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:01,404 INFO L87 Difference]: Start difference. First operand 678 states and 1117 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:02,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:02,300 INFO L93 Difference]: Finished difference Result 1768 states and 2961 transitions. [2021-12-14 14:34:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:02,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2021-12-14 14:34:02,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:02,310 INFO L225 Difference]: With dead ends: 1768 [2021-12-14 14:34:02,310 INFO L226 Difference]: Without dead ends: 1158 [2021-12-14 14:34:02,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:02,313 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1010 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:02,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 1337 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:34:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-12-14 14:34:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1003. [2021-12-14 14:34:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 798 states have (on average 1.605263157894737) internal successors, (1281), 805 states have internal predecessors, (1281), 184 states have call successors, (184), 16 states have call predecessors, (184), 20 states have return successors, (215), 183 states have call predecessors, (215), 183 states have call successors, (215) [2021-12-14 14:34:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1680 transitions. [2021-12-14 14:34:02,358 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1680 transitions. Word has length 109 [2021-12-14 14:34:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:02,359 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1680 transitions. [2021-12-14 14:34:02,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1680 transitions. [2021-12-14 14:34:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-14 14:34:02,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:02,363 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] [2021-12-14 14:34:02,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 14:34:02,363 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1651482476, now seen corresponding path program 1 times [2021-12-14 14:34:02,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:02,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397901222] [2021-12-14 14:34:02,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:02,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:34:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:34:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:34:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:34:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:34:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:02,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:02,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397901222] [2021-12-14 14:34:02,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397901222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:02,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:02,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:02,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753535613] [2021-12-14 14:34:02,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:02,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:02,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:02,447 INFO L87 Difference]: Start difference. First operand 1003 states and 1680 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:03,392 INFO L93 Difference]: Finished difference Result 2548 states and 4310 transitions. [2021-12-14 14:34:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:03,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-12-14 14:34:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:03,400 INFO L225 Difference]: With dead ends: 2548 [2021-12-14 14:34:03,401 INFO L226 Difference]: Without dead ends: 1666 [2021-12-14 14:34:03,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:03,404 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1008 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:03,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 1314 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:34:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-12-14 14:34:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1511. [2021-12-14 14:34:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1211 states have (on average 1.611890999174236) internal successors, (1952), 1218 states have internal predecessors, (1952), 279 states have call successors, (279), 16 states have call predecessors, (279), 20 states have return successors, (310), 278 states have call predecessors, (310), 278 states have call successors, (310) [2021-12-14 14:34:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2541 transitions. [2021-12-14 14:34:03,459 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2541 transitions. Word has length 110 [2021-12-14 14:34:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:03,459 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 2541 transitions. [2021-12-14 14:34:03,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2541 transitions. [2021-12-14 14:34:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 14:34:03,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:03,464 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] [2021-12-14 14:34:03,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 14:34:03,465 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:03,465 INFO L85 PathProgramCache]: Analyzing trace with hash 225800205, now seen corresponding path program 1 times [2021-12-14 14:34:03,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:03,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99944945] [2021-12-14 14:34:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:03,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:34:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:34:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:34:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:34:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:34:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:03,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:03,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99944945] [2021-12-14 14:34:03,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99944945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:03,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:03,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:03,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771107537] [2021-12-14 14:34:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:03,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:03,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:03,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:03,541 INFO L87 Difference]: Start difference. First operand 1511 states and 2541 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:04,506 INFO L93 Difference]: Finished difference Result 3700 states and 6319 transitions. [2021-12-14 14:34:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:04,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-12-14 14:34:04,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:04,517 INFO L225 Difference]: With dead ends: 3700 [2021-12-14 14:34:04,517 INFO L226 Difference]: Without dead ends: 2435 [2021-12-14 14:34:04,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:04,523 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1006 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:04,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 1313 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:34:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2021-12-14 14:34:04,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2280. [2021-12-14 14:34:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1857 states have (on average 1.617124394184168) internal successors, (3003), 1864 states have internal predecessors, (3003), 402 states have call successors, (402), 16 states have call predecessors, (402), 20 states have return successors, (449), 401 states have call predecessors, (449), 401 states have call successors, (449) [2021-12-14 14:34:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3854 transitions. [2021-12-14 14:34:04,628 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3854 transitions. Word has length 111 [2021-12-14 14:34:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:04,628 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3854 transitions. [2021-12-14 14:34:04,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3854 transitions. [2021-12-14 14:34:04,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 14:34:04,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:04,636 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] [2021-12-14 14:34:04,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 14:34:04,636 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:04,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1877105493, now seen corresponding path program 1 times [2021-12-14 14:34:04,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:04,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224217536] [2021-12-14 14:34:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:04,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:34:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:34:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:34:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:34:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:34:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:04,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:04,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224217536] [2021-12-14 14:34:04,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224217536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:04,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:04,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:04,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091098538] [2021-12-14 14:34:04,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:04,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:04,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:04,703 INFO L87 Difference]: Start difference. First operand 2280 states and 3854 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:05,639 INFO L93 Difference]: Finished difference Result 5494 states and 9453 transitions. [2021-12-14 14:34:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:05,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-14 14:34:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:05,656 INFO L225 Difference]: With dead ends: 5494 [2021-12-14 14:34:05,656 INFO L226 Difference]: Without dead ends: 3664 [2021-12-14 14:34:05,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:05,662 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1004 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:05,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 1313 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:34:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2021-12-14 14:34:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3509. [2021-12-14 14:34:05,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2907 states have (on average 1.6202270381836945) internal successors, (4710), 2914 states have internal predecessors, (4710), 581 states have call successors, (581), 16 states have call predecessors, (581), 20 states have return successors, (654), 580 states have call predecessors, (654), 580 states have call successors, (654) [2021-12-14 14:34:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 5945 transitions. [2021-12-14 14:34:05,847 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 5945 transitions. Word has length 112 [2021-12-14 14:34:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:05,847 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 5945 transitions. [2021-12-14 14:34:05,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 5945 transitions. [2021-12-14 14:34:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 14:34:05,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:05,855 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] [2021-12-14 14:34:05,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 14:34:05,855 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash 463786281, now seen corresponding path program 1 times [2021-12-14 14:34:05,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:05,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695692258] [2021-12-14 14:34:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:05,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:34:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:34:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:34:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:34:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:34:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:05,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695692258] [2021-12-14 14:34:05,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695692258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:05,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:05,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:05,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204325548] [2021-12-14 14:34:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:05,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:05,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:05,932 INFO L87 Difference]: Start difference. First operand 3509 states and 5945 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:06,922 INFO L93 Difference]: Finished difference Result 8442 states and 14600 transitions. [2021-12-14 14:34:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-14 14:34:06,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:06,946 INFO L225 Difference]: With dead ends: 8442 [2021-12-14 14:34:06,947 INFO L226 Difference]: Without dead ends: 5695 [2021-12-14 14:34:06,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:06,956 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1002 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:06,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1322 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:34:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2021-12-14 14:34:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5540. [2021-12-14 14:34:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 4562 states have (on average 1.6137658921525646) internal successors, (7362), 4569 states have internal predecessors, (7362), 957 states have call successors, (957), 16 states have call predecessors, (957), 20 states have return successors, (1074), 956 states have call predecessors, (1074), 956 states have call successors, (1074) [2021-12-14 14:34:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 9393 transitions. [2021-12-14 14:34:07,286 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 9393 transitions. Word has length 113 [2021-12-14 14:34:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:07,287 INFO L470 AbstractCegarLoop]: Abstraction has 5540 states and 9393 transitions. [2021-12-14 14:34:07,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 9393 transitions. [2021-12-14 14:34:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-14 14:34:07,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:07,299 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] [2021-12-14 14:34:07,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 14:34:07,299 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:07,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:07,299 INFO L85 PathProgramCache]: Analyzing trace with hash 397519417, now seen corresponding path program 1 times [2021-12-14 14:34:07,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:07,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500614804] [2021-12-14 14:34:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:07,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:34:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:34:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:34:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:34:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:34:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:07,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:07,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500614804] [2021-12-14 14:34:07,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500614804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:07,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:07,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:07,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172804425] [2021-12-14 14:34:07,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:07,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:07,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:07,387 INFO L87 Difference]: Start difference. First operand 5540 states and 9393 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:08,490 INFO L93 Difference]: Finished difference Result 13779 states and 23821 transitions. [2021-12-14 14:34:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2021-12-14 14:34:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:08,531 INFO L225 Difference]: With dead ends: 13779 [2021-12-14 14:34:08,532 INFO L226 Difference]: Without dead ends: 9378 [2021-12-14 14:34:08,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:08,548 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1000 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:08,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 1317 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:34:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2021-12-14 14:34:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 9223. [2021-12-14 14:34:08,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9223 states, 7639 states have (on average 1.6112056551904699) internal successors, (12308), 7646 states have internal predecessors, (12308), 1563 states have call successors, (1563), 16 states have call predecessors, (1563), 20 states have return successors, (1758), 1562 states have call predecessors, (1758), 1562 states have call successors, (1758) [2021-12-14 14:34:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9223 states to 9223 states and 15629 transitions. [2021-12-14 14:34:08,958 INFO L78 Accepts]: Start accepts. Automaton has 9223 states and 15629 transitions. Word has length 114 [2021-12-14 14:34:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:08,959 INFO L470 AbstractCegarLoop]: Abstraction has 9223 states and 15629 transitions. [2021-12-14 14:34:08,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 9223 states and 15629 transitions. [2021-12-14 14:34:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-14 14:34:08,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:08,972 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] [2021-12-14 14:34:08,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 14:34:08,973 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1530809481, now seen corresponding path program 1 times [2021-12-14 14:34:08,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:08,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664956550] [2021-12-14 14:34:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:08,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:34:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:34:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:34:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:34:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:34:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:09,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:09,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664956550] [2021-12-14 14:34:09,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664956550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:09,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:09,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:09,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837965560] [2021-12-14 14:34:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:09,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:09,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:09,044 INFO L87 Difference]: Start difference. First operand 9223 states and 15629 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:10,290 INFO L93 Difference]: Finished difference Result 23963 states and 41367 transitions. [2021-12-14 14:34:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:10,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2021-12-14 14:34:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:10,344 INFO L225 Difference]: With dead ends: 23963 [2021-12-14 14:34:10,344 INFO L226 Difference]: Without dead ends: 16331 [2021-12-14 14:34:10,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:10,369 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 998 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:10,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1370 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:34:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2021-12-14 14:34:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 16176. [2021-12-14 14:34:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16176 states, 13389 states have (on average 1.6020613936813803) internal successors, (21450), 13396 states have internal predecessors, (21450), 2766 states have call successors, (2766), 16 states have call predecessors, (2766), 20 states have return successors, (3105), 2765 states have call predecessors, (3105), 2765 states have call successors, (3105) [2021-12-14 14:34:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16176 states to 16176 states and 27321 transitions. [2021-12-14 14:34:10,951 INFO L78 Accepts]: Start accepts. Automaton has 16176 states and 27321 transitions. Word has length 115 [2021-12-14 14:34:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:10,951 INFO L470 AbstractCegarLoop]: Abstraction has 16176 states and 27321 transitions. [2021-12-14 14:34:10,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16176 states and 27321 transitions. [2021-12-14 14:34:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-14 14:34:10,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:10,969 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] [2021-12-14 14:34:10,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 14:34:10,970 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1035195930, now seen corresponding path program 1 times [2021-12-14 14:34:10,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:10,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492169553] [2021-12-14 14:34:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:10,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:34:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:34:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:34:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:34:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:34:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:11,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:11,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492169553] [2021-12-14 14:34:11,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492169553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:11,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:11,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:11,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793815542] [2021-12-14 14:34:11,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:11,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:11,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:11,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:11,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:11,123 INFO L87 Difference]: Start difference. First operand 16176 states and 27321 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:12,723 INFO L93 Difference]: Finished difference Result 42929 states and 73966 transitions. [2021-12-14 14:34:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2021-12-14 14:34:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:12,848 INFO L225 Difference]: With dead ends: 42929 [2021-12-14 14:34:12,848 INFO L226 Difference]: Without dead ends: 28986 [2021-12-14 14:34:12,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:12,888 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 996 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:12,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1318 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:34:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28986 states. [2021-12-14 14:34:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28986 to 28831. [2021-12-14 14:34:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28831 states, 24005 states have (on average 1.597750468652364) internal successors, (38354), 24012 states have internal predecessors, (38354), 4805 states have call successors, (4805), 16 states have call predecessors, (4805), 20 states have return successors, (5418), 4804 states have call predecessors, (5418), 4804 states have call successors, (5418) [2021-12-14 14:34:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28831 states to 28831 states and 48577 transitions. [2021-12-14 14:34:14,067 INFO L78 Accepts]: Start accepts. Automaton has 28831 states and 48577 transitions. Word has length 116 [2021-12-14 14:34:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:14,067 INFO L470 AbstractCegarLoop]: Abstraction has 28831 states and 48577 transitions. [2021-12-14 14:34:14,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 28831 states and 48577 transitions. [2021-12-14 14:34:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 14:34:14,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:14,086 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] [2021-12-14 14:34:14,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 14:34:14,087 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1615427271, now seen corresponding path program 1 times [2021-12-14 14:34:14,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:14,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310075661] [2021-12-14 14:34:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:14,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:34:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:34:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:34:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:34:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:34:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:14,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:14,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310075661] [2021-12-14 14:34:14,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310075661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:14,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:14,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:14,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81033134] [2021-12-14 14:34:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:14,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:14,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:14,156 INFO L87 Difference]: Start difference. First operand 28831 states and 48577 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:16,451 INFO L93 Difference]: Finished difference Result 78691 states and 134725 transitions. [2021-12-14 14:34:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:16,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2021-12-14 14:34:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:16,641 INFO L225 Difference]: With dead ends: 78691 [2021-12-14 14:34:16,642 INFO L226 Difference]: Without dead ends: 52865 [2021-12-14 14:34:16,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:16,703 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 994 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:16,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 1317 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 14:34:16,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52865 states. [2021-12-14 14:34:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52865 to 52710. [2021-12-14 14:34:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52710 states, 44169 states have (on average 1.5921347551450111) internal successors, (70323), 44176 states have internal predecessors, (70323), 8520 states have call successors, (8520), 16 states have call predecessors, (8520), 20 states have return successors, (9665), 8519 states have call predecessors, (9665), 8519 states have call successors, (9665) [2021-12-14 14:34:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52710 states to 52710 states and 88508 transitions. [2021-12-14 14:34:18,942 INFO L78 Accepts]: Start accepts. Automaton has 52710 states and 88508 transitions. Word has length 117 [2021-12-14 14:34:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:18,942 INFO L470 AbstractCegarLoop]: Abstraction has 52710 states and 88508 transitions. [2021-12-14 14:34:18,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 52710 states and 88508 transitions. [2021-12-14 14:34:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-14 14:34:18,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:18,962 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:34:18,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 14:34:18,962 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:18,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1383712678, now seen corresponding path program 1 times [2021-12-14 14:34:18,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:18,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614509426] [2021-12-14 14:34:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:18,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:34:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:34:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:34:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:34:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:34:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:19,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:19,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614509426] [2021-12-14 14:34:19,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614509426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:19,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:19,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 14:34:19,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330907077] [2021-12-14 14:34:19,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:19,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:34:19,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:19,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:34:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:34:19,052 INFO L87 Difference]: Start difference. First operand 52710 states and 88508 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:22,852 INFO L93 Difference]: Finished difference Result 98462 states and 168912 transitions. [2021-12-14 14:34:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:34:22,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2021-12-14 14:34:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:23,183 INFO L225 Difference]: With dead ends: 98462 [2021-12-14 14:34:23,184 INFO L226 Difference]: Without dead ends: 98324 [2021-12-14 14:34:23,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:34:23,223 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 992 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:23,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1007 Valid, 1318 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:34:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98324 states. [2021-12-14 14:34:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98324 to 98169. [2021-12-14 14:34:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98169 states, 82829 states have (on average 1.5851090801530865) internal successors, (131293), 82836 states have internal predecessors, (131293), 15319 states have call successors, (15319), 16 states have call predecessors, (15319), 20 states have return successors, (17510), 15318 states have call predecessors, (17510), 15318 states have call successors, (17510) [2021-12-14 14:34:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98169 states to 98169 states and 164122 transitions. [2021-12-14 14:34:27,534 INFO L78 Accepts]: Start accepts. Automaton has 98169 states and 164122 transitions. Word has length 118 [2021-12-14 14:34:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:34:27,534 INFO L470 AbstractCegarLoop]: Abstraction has 98169 states and 164122 transitions. [2021-12-14 14:34:27,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 14:34:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 98169 states and 164122 transitions. [2021-12-14 14:34:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-14 14:34:27,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:34:27,553 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:34:27,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 14:34:27,554 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:34:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:34:27,554 INFO L85 PathProgramCache]: Analyzing trace with hash -548289320, now seen corresponding path program 1 times [2021-12-14 14:34:27,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:34:27,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350006790] [2021-12-14 14:34:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:34:27,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:34:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:34:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:34:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:34:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:34:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:34:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:34:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:34:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:34:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:34:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:34:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:34:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:34:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 14:34:27,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:34:27,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350006790] [2021-12-14 14:34:27,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350006790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:34:27,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:34:27,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-14 14:34:27,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542840738] [2021-12-14 14:34:27,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:34:27,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 14:34:27,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:34:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 14:34:27,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:34:27,704 INFO L87 Difference]: Start difference. First operand 98169 states and 164122 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-14 14:34:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:34:38,401 INFO L93 Difference]: Finished difference Result 196653 states and 340617 transitions. [2021-12-14 14:34:38,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-14 14:34:38,402 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2021-12-14 14:34:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:34:39,288 INFO L225 Difference]: With dead ends: 196653 [2021-12-14 14:34:39,289 INFO L226 Difference]: Without dead ends: 196521 [2021-12-14 14:34:39,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2021-12-14 14:34:39,377 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 4549 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 9302 mSolverCounterSat, 2390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4549 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 11692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2390 IncrementalHoareTripleChecker+Valid, 9302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:34:39,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4549 Valid, 3592 Invalid, 11692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2390 Valid, 9302 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-14 14:34:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196521 states.