./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec8_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 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:03:22,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:03:22,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:03:22,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:03:22,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:03:22,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:03:22,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:03:22,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:03:22,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:03:22,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:03:22,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:03:22,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:03:22,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:03:22,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:03:22,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:03:22,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:03:22,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:03:22,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:03:22,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:03:22,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:03:22,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:03:22,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:03:22,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:03:22,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:03:22,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:03:22,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:03:22,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:03:22,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:03:22,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:03:22,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:03:22,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:03:22,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:03:22,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:03:22,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:03:22,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:03:22,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:03:22,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:03:22,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:03:22,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:03:22,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:03:22,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:03:22,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:03:22,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:03:22,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:03:22,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:03:22,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:03:22,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:03:22,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:03:22,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:03:22,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:03:22,631 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:03:22,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:03:22,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:03:22,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:03:22,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:03:22,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:03:22,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:03:22,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:03:22,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:03:22,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:03:22,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:03:22,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:03:22,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:03:22,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:03:22,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:03:22,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:03:22,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:03:22,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:03:22,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:03:22,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:03:22,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:03:22,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:03:22,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:03:22,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:03:22,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:03:22,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:03:22,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 [2021-12-17 15:03:22,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:03:22,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:03:22,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:03:22,829 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:03:22,830 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:03:22,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2021-12-17 15:03:22,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff4ce0aa/952b12d1777d4893a02ce346f84979b2/FLAG9be06a52c [2021-12-17 15:03:23,277 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:03:23,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2021-12-17 15:03:23,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff4ce0aa/952b12d1777d4893a02ce346f84979b2/FLAG9be06a52c [2021-12-17 15:03:23,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff4ce0aa/952b12d1777d4893a02ce346f84979b2 [2021-12-17 15:03:23,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:03:23,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:03:23,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:03:23,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:03:23,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:03:23,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:03:23" (1/1) ... [2021-12-17 15:03:23,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727dd3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:23, skipping insertion in model container [2021-12-17 15:03:23,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:03:23" (1/1) ... [2021-12-17 15:03:23,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:03:23,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:03:24,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2021-12-17 15:03:24,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:03:24,099 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:03:24,192 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2021-12-17 15:03:24,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:03:24,219 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:03:24,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24 WrapperNode [2021-12-17 15:03:24,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:03:24,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:03:24,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:03:24,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:03:24,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,292 INFO L137 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2021-12-17 15:03:24,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:03:24,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:03:24,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:03:24,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:03:24,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:03:24,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:03:24,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:03:24,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:03:24,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (1/1) ... [2021-12-17 15:03:24,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:03:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:24,390 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) [2021-12-17 15:03:24,396 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 [2021-12-17 15:03:24,415 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-17 15:03:24,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-17 15:03:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-17 15:03:24,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-17 15:03:24,416 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-17 15:03:24,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-17 15:03:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-17 15:03:24,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-17 15:03:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-17 15:03:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-17 15:03:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-17 15:03:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-17 15:03:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-17 15:03:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-17 15:03:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-17 15:03:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-17 15:03:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-17 15:03:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:03:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-17 15:03:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-17 15:03:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-17 15:03:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-17 15:03:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-17 15:03:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-17 15:03:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-17 15:03:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-17 15:03:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-17 15:03:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-17 15:03:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-17 15:03:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-17 15:03:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-17 15:03:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-17 15:03:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:03:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-17 15:03:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-17 15:03:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:03:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:03:24,649 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:03:24,654 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:03:25,117 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:03:25,124 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:03:25,124 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 15:03:25,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:03:25 BoogieIcfgContainer [2021-12-17 15:03:25,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:03:25,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:03:25,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:03:25,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:03:25,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:03:23" (1/3) ... [2021-12-17 15:03:25,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1782884e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:03:25, skipping insertion in model container [2021-12-17 15:03:25,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:03:24" (2/3) ... [2021-12-17 15:03:25,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1782884e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:03:25, skipping insertion in model container [2021-12-17 15:03:25,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:03:25" (3/3) ... [2021-12-17 15:03:25,132 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.c [2021-12-17 15:03:25,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:03:25,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:03:25,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:03:25,173 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 [2021-12-17 15:03:25,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:03:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 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) [2021-12-17 15:03:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 15:03:25,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:25,203 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] [2021-12-17 15:03:25,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash -806898450, now seen corresponding path program 1 times [2021-12-17 15:03:25,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:25,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581631276] [2021-12-17 15:03:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:25,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 15:03:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-17 15:03:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 15:03:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 15:03:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 15:03:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 15:03:25,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:25,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581631276] [2021-12-17 15:03:25,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581631276] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:25,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883673993] [2021-12-17 15:03:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:25,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:25,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:25,573 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) [2021-12-17 15:03:25,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 15:03:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:25,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 15:03:25,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 15:03:26,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:26,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883673993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:26,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:26,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-17 15:03:26,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745294563] [2021-12-17 15:03:26,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 15:03:26,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 15:03:26,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:03:26,058 INFO L87 Difference]: Start difference. First operand has 299 states, 236 states have (on average 1.5338983050847457) internal successors, (362), 240 states have internal predecessors, (362), 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) [2021-12-17 15:03:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:26,094 INFO L93 Difference]: Finished difference Result 444 states and 658 transitions. [2021-12-17 15:03:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 15:03:26,096 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 [2021-12-17 15:03:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:26,105 INFO L225 Difference]: With dead ends: 444 [2021-12-17 15:03:26,106 INFO L226 Difference]: Without dead ends: 292 [2021-12-17 15:03:26,110 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 [2021-12-17 15:03:26,112 INFO L933 BasicCegarLoop]: 448 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, 448 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 [2021-12-17 15:03:26,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-12-17 15:03:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-12-17 15:03:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 230 states have (on average 1.5260869565217392) internal successors, (351), 233 states have internal predecessors, (351), 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) [2021-12-17 15:03:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 440 transitions. [2021-12-17 15:03:26,169 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 440 transitions. Word has length 89 [2021-12-17 15:03:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:26,170 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 440 transitions. [2021-12-17 15:03:26,170 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) [2021-12-17 15:03:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 440 transitions. [2021-12-17 15:03:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 15:03:26,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:26,174 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] [2021-12-17 15:03:26,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 15:03:26,394 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 [2021-12-17 15:03:26,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:26,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1177822227, now seen corresponding path program 1 times [2021-12-17 15:03:26,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:26,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695494779] [2021-12-17 15:03:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:26,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 15:03:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 15:03:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 15:03:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 15:03:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 15:03:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 15:03:26,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:26,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695494779] [2021-12-17 15:03:26,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695494779] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:26,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235634589] [2021-12-17 15:03:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:26,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:26,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:26,555 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) [2021-12-17 15:03:26,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 15:03:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:26,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 15:03:26,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 15:03:26,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:26,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235634589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:26,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:26,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 15:03:26,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541184135] [2021-12-17 15:03:26,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:26,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:03:26,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:03:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:26,903 INFO L87 Difference]: Start difference. First operand 292 states and 440 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) [2021-12-17 15:03:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:26,935 INFO L93 Difference]: Finished difference Result 434 states and 639 transitions. [2021-12-17 15:03:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:03:26,936 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 [2021-12-17 15:03:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:26,938 INFO L225 Difference]: With dead ends: 434 [2021-12-17 15:03:26,938 INFO L226 Difference]: Without dead ends: 295 [2021-12-17 15:03:26,940 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 [2021-12-17 15:03:26,941 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 874 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 [2021-12-17 15:03:26,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 874 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-17 15:03:26,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-12-17 15:03:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 232 states have (on average 1.521551724137931) internal successors, (353), 235 states have internal predecessors, (353), 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) [2021-12-17 15:03:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 442 transitions. [2021-12-17 15:03:26,962 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 442 transitions. Word has length 90 [2021-12-17 15:03:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:26,963 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 442 transitions. [2021-12-17 15:03:26,963 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) [2021-12-17 15:03:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 442 transitions. [2021-12-17 15:03:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 15:03:26,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:26,966 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] [2021-12-17 15:03:26,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 15:03:27,185 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 [2021-12-17 15:03:27,185 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:27,186 INFO L85 PathProgramCache]: Analyzing trace with hash 213599068, now seen corresponding path program 1 times [2021-12-17 15:03:27,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:27,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491430032] [2021-12-17 15:03:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:27,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 15:03:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 15:03:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 15:03:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 15:03:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 15:03:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:27,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:27,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491430032] [2021-12-17 15:03:27,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491430032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:27,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834024293] [2021-12-17 15:03:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:27,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:27,338 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) [2021-12-17 15:03:27,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 15:03:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 15:03:27,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-17 15:03:27,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:27,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834024293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:27,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:27,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-17 15:03:27,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573930830] [2021-12-17 15:03:27,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:27,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:03:27,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:27,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:03:27,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:03:27,650 INFO L87 Difference]: Start difference. First operand 294 states and 442 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) [2021-12-17 15:03:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:27,668 INFO L93 Difference]: Finished difference Result 618 states and 943 transitions. [2021-12-17 15:03:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:03:27,669 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 [2021-12-17 15:03:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:27,671 INFO L225 Difference]: With dead ends: 618 [2021-12-17 15:03:27,671 INFO L226 Difference]: Without dead ends: 351 [2021-12-17 15:03:27,673 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 [2021-12-17 15:03:27,674 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 107 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 858 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 [2021-12-17 15:03:27,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 858 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-17 15:03:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2021-12-17 15:03:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 270 states have (on average 1.537037037037037) internal successors, (415), 273 states have internal predecessors, (415), 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) [2021-12-17 15:03:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 526 transitions. [2021-12-17 15:03:27,692 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 526 transitions. Word has length 96 [2021-12-17 15:03:27,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:27,692 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 526 transitions. [2021-12-17 15:03:27,692 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) [2021-12-17 15:03:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 526 transitions. [2021-12-17 15:03:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 15:03:27,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:27,694 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] [2021-12-17 15:03:27,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 15:03:27,929 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 [2021-12-17 15:03:27,930 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1191934709, now seen corresponding path program 1 times [2021-12-17 15:03:27,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:27,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590692325] [2021-12-17 15:03:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:27,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:03:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 15:03:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 15:03:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 15:03:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 15:03:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 15:03:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 15:03:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 15:03:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:28,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590692325] [2021-12-17 15:03:28,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590692325] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948880945] [2021-12-17 15:03:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:28,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:28,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:28,057 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) [2021-12-17 15:03:28,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 15:03:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 15:03:28,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-17 15:03:28,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:28,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948880945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:28,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:28,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-17 15:03:28,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297456632] [2021-12-17 15:03:28,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:28,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:03:28,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:03:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:03:28,422 INFO L87 Difference]: Start difference. First operand 343 states and 526 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) [2021-12-17 15:03:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:28,465 INFO L93 Difference]: Finished difference Result 677 states and 1042 transitions. [2021-12-17 15:03:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 15:03:28,466 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 [2021-12-17 15:03:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:28,468 INFO L225 Difference]: With dead ends: 677 [2021-12-17 15:03:28,468 INFO L226 Difference]: Without dead ends: 345 [2021-12-17 15:03:28,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-17 15:03:28,470 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 125 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1580 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 [2021-12-17 15:03:28,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1580 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-17 15:03:28,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-12-17 15:03:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 275 states have internal predecessors, (416), 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) [2021-12-17 15:03:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 529 transitions. [2021-12-17 15:03:28,483 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 529 transitions. Word has length 97 [2021-12-17 15:03:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:28,484 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 529 transitions. [2021-12-17 15:03:28,484 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) [2021-12-17 15:03:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 529 transitions. [2021-12-17 15:03:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 15:03:28,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:28,485 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] [2021-12-17 15:03:28,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 15:03:28,713 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 [2021-12-17 15:03:28,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:28,714 INFO L85 PathProgramCache]: Analyzing trace with hash -398998019, now seen corresponding path program 1 times [2021-12-17 15:03:28,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:28,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519236389] [2021-12-17 15:03:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:28,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:03:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 15:03:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 15:03:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 15:03:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 15:03:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 15:03:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 15:03:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 15:03:28,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519236389] [2021-12-17 15:03:28,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519236389] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982045650] [2021-12-17 15:03:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:28,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:28,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:28,859 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) [2021-12-17 15:03:28,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 15:03:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 15:03:29,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-17 15:03:29,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 15:03:29,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982045650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:29,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 15:03:29,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-17 15:03:29,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564722560] [2021-12-17 15:03:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:29,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:03:29,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:03:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-17 15:03:29,198 INFO L87 Difference]: Start difference. First operand 345 states and 529 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) [2021-12-17 15:03:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:29,256 INFO L93 Difference]: Finished difference Result 679 states and 1047 transitions. [2021-12-17 15:03:29,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 15:03:29,257 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 [2021-12-17 15:03:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:29,259 INFO L225 Difference]: With dead ends: 679 [2021-12-17 15:03:29,259 INFO L226 Difference]: Without dead ends: 347 [2021-12-17 15:03:29,260 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 [2021-12-17 15:03:29,261 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 124 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1569 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 [2021-12-17 15:03:29,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1569 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:03:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-17 15:03:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-12-17 15:03:29,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 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) [2021-12-17 15:03:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 535 transitions. [2021-12-17 15:03:29,274 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 535 transitions. Word has length 98 [2021-12-17 15:03:29,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:29,274 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 535 transitions. [2021-12-17 15:03:29,275 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) [2021-12-17 15:03:29,275 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 535 transitions. [2021-12-17 15:03:29,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 15:03:29,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:29,276 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] [2021-12-17 15:03:29,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-17 15:03:29,491 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 [2021-12-17 15:03:29,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 262721501, now seen corresponding path program 1 times [2021-12-17 15:03:29,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:29,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331506052] [2021-12-17 15:03:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:29,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 15:03:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 15:03:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-17 15:03:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 15:03:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 15:03:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 15:03:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:29,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:29,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331506052] [2021-12-17 15:03:29,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331506052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:29,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:29,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 15:03:29,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690388861] [2021-12-17 15:03:29,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:29,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 15:03:29,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 15:03:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:03:29,576 INFO L87 Difference]: Start difference. First operand 347 states and 535 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) [2021-12-17 15:03:30,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:30,778 INFO L93 Difference]: Finished difference Result 819 states and 1261 transitions. [2021-12-17 15:03:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 15:03:30,779 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 [2021-12-17 15:03:30,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:30,782 INFO L225 Difference]: With dead ends: 819 [2021-12-17 15:03:30,782 INFO L226 Difference]: Without dead ends: 495 [2021-12-17 15:03:30,783 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 [2021-12-17 15:03:30,783 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1023 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:30,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 1581 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 15:03:30,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-17 15:03:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 347. [2021-12-17 15:03:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 272 states have (on average 1.5330882352941178) internal successors, (417), 277 states have internal predecessors, (417), 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) [2021-12-17 15:03:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 534 transitions. [2021-12-17 15:03:30,800 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 534 transitions. Word has length 99 [2021-12-17 15:03:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:30,800 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 534 transitions. [2021-12-17 15:03:30,800 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) [2021-12-17 15:03:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 534 transitions. [2021-12-17 15:03:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 15:03:30,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:30,802 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] [2021-12-17 15:03:30,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:03:30,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:30,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash 963094467, now seen corresponding path program 2 times [2021-12-17 15:03:30,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:30,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944665448] [2021-12-17 15:03:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:30,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 15:03:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 15:03:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-17 15:03:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 15:03:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:03:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 15:03:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 15:03:30,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:30,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944665448] [2021-12-17 15:03:30,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944665448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:30,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:30,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 15:03:30,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014453033] [2021-12-17 15:03:30,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:30,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 15:03:30,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 15:03:30,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:03:30,878 INFO L87 Difference]: Start difference. First operand 347 states and 534 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) [2021-12-17 15:03:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:32,008 INFO L93 Difference]: Finished difference Result 821 states and 1264 transitions. [2021-12-17 15:03:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 15:03:32,009 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 [2021-12-17 15:03:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:32,011 INFO L225 Difference]: With dead ends: 821 [2021-12-17 15:03:32,011 INFO L226 Difference]: Without dead ends: 497 [2021-12-17 15:03:32,012 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 [2021-12-17 15:03:32,012 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1018 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:32,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 1582 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1698 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 15:03:32,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-17 15:03:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2021-12-17 15:03:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 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) [2021-12-17 15:03:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 537 transitions. [2021-12-17 15:03:32,031 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 537 transitions. Word has length 100 [2021-12-17 15:03:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:32,032 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 537 transitions. [2021-12-17 15:03:32,032 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) [2021-12-17 15:03:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 537 transitions. [2021-12-17 15:03:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 15:03:32,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:32,036 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] [2021-12-17 15:03:32,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:03:32,036 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash -868146014, now seen corresponding path program 1 times [2021-12-17 15:03:32,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:32,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156072186] [2021-12-17 15:03:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:32,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 15:03:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 15:03:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 15:03:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 15:03:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 15:03:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 15:03:32,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:32,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156072186] [2021-12-17 15:03:32,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156072186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:32,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:32,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 15:03:32,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170414119] [2021-12-17 15:03:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:32,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 15:03:32,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:32,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 15:03:32,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:03:32,186 INFO L87 Difference]: Start difference. First operand 349 states and 537 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) [2021-12-17 15:03:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:33,676 INFO L93 Difference]: Finished difference Result 819 states and 1259 transitions. [2021-12-17 15:03:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:03:33,677 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 [2021-12-17 15:03:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:33,679 INFO L225 Difference]: With dead ends: 819 [2021-12-17 15:03:33,679 INFO L226 Difference]: Without dead ends: 497 [2021-12-17 15:03:33,682 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 [2021-12-17 15:03:33,682 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1130 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3022 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 3022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:33,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 2038 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 3022 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 15:03:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-17 15:03:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 349. [2021-12-17 15:03:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 273 states have (on average 1.531135531135531) internal successors, (418), 279 states have internal predecessors, (418), 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) [2021-12-17 15:03:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2021-12-17 15:03:33,702 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 101 [2021-12-17 15:03:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:33,702 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2021-12-17 15:03:33,702 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) [2021-12-17 15:03:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2021-12-17 15:03:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 15:03:33,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:33,704 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] [2021-12-17 15:03:33,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:03:33,704 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:33,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:33,705 INFO L85 PathProgramCache]: Analyzing trace with hash 400437826, now seen corresponding path program 2 times [2021-12-17 15:03:33,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:33,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078969851] [2021-12-17 15:03:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:33,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 15:03:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 15:03:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 15:03:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 15:03:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 15:03:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 15:03:33,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:33,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078969851] [2021-12-17 15:03:33,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078969851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:33,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:33,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 15:03:33,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245201721] [2021-12-17 15:03:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:33,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 15:03:33,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:33,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 15:03:33,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:03:33,834 INFO L87 Difference]: Start difference. First operand 349 states and 536 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) [2021-12-17 15:03:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:35,413 INFO L93 Difference]: Finished difference Result 821 states and 1265 transitions. [2021-12-17 15:03:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 15:03:35,413 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 [2021-12-17 15:03:35,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:35,416 INFO L225 Difference]: With dead ends: 821 [2021-12-17 15:03:35,416 INFO L226 Difference]: Without dead ends: 499 [2021-12-17 15:03:35,418 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 [2021-12-17 15:03:35,419 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1125 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:35,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2039 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 15:03:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-17 15:03:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 351. [2021-12-17 15:03:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 274 states have (on average 1.5291970802919708) internal successors, (419), 281 states have internal predecessors, (419), 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) [2021-12-17 15:03:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 542 transitions. [2021-12-17 15:03:35,438 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 542 transitions. Word has length 102 [2021-12-17 15:03:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:35,440 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 542 transitions. [2021-12-17 15:03:35,440 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) [2021-12-17 15:03:35,440 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 542 transitions. [2021-12-17 15:03:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 15:03:35,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:35,441 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] [2021-12-17 15:03:35,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:03:35,442 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1821386649, now seen corresponding path program 1 times [2021-12-17 15:03:35,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:35,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196595378] [2021-12-17 15:03:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:35,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 15:03:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 15:03:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 15:03:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 15:03:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:03:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:35,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:35,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196595378] [2021-12-17 15:03:35,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196595378] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 15:03:35,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81411615] [2021-12-17 15:03:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:35,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 15:03:35,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:03:35,535 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) [2021-12-17 15:03:35,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 15:03:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:35,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 15:03:35,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 15:03:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:35,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 15:03:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:35,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81411615] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 15:03:35,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 15:03:35,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-17 15:03:35,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516265219] [2021-12-17 15:03:35,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 15:03:35,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 15:03:35,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 15:03:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:03:35,941 INFO L87 Difference]: Start difference. First operand 351 states and 542 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) [2021-12-17 15:03:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:37,029 INFO L93 Difference]: Finished difference Result 990 states and 1593 transitions. [2021-12-17 15:03:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 15:03:37,030 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 [2021-12-17 15:03:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:37,035 INFO L225 Difference]: With dead ends: 990 [2021-12-17 15:03:37,035 INFO L226 Difference]: Without dead ends: 851 [2021-12-17 15:03:37,036 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 [2021-12-17 15:03:37,037 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1529 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:37,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1574 Valid, 1761 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 15:03:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2021-12-17 15:03:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 679. [2021-12-17 15:03:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 538 states have (on average 1.5929368029739777) internal successors, (857), 545 states have internal predecessors, (857), 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) [2021-12-17 15:03:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1118 transitions. [2021-12-17 15:03:37,065 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1118 transitions. Word has length 103 [2021-12-17 15:03:37,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:37,065 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 1118 transitions. [2021-12-17 15:03:37,065 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) [2021-12-17 15:03:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1118 transitions. [2021-12-17 15:03:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-17 15:03:37,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:37,068 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] [2021-12-17 15:03:37,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 15:03:37,287 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 [2021-12-17 15:03:37,287 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946556, now seen corresponding path program 1 times [2021-12-17 15:03:37,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:37,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230115309] [2021-12-17 15:03:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:37,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 15:03:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 15:03:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 15:03:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 15:03:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 15:03:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:37,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:37,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230115309] [2021-12-17 15:03:37,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230115309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:37,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:37,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:37,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557147001] [2021-12-17 15:03:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:37,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:37,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:37,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:37,380 INFO L87 Difference]: Start difference. First operand 679 states and 1118 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) [2021-12-17 15:03:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:38,327 INFO L93 Difference]: Finished difference Result 1771 states and 2964 transitions. [2021-12-17 15:03:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:38,328 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 [2021-12-17 15:03:38,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:38,333 INFO L225 Difference]: With dead ends: 1771 [2021-12-17 15:03:38,333 INFO L226 Difference]: Without dead ends: 1160 [2021-12-17 15:03:38,336 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 [2021-12-17 15:03:38,336 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1014 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:38,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 1340 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:03:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-12-17 15:03:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1004. [2021-12-17 15:03:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 799 states have (on average 1.6045056320400501) internal successors, (1282), 806 states have internal predecessors, (1282), 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) [2021-12-17 15:03:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1681 transitions. [2021-12-17 15:03:38,371 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1681 transitions. Word has length 109 [2021-12-17 15:03:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:38,372 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1681 transitions. [2021-12-17 15:03:38,372 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) [2021-12-17 15:03:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1681 transitions. [2021-12-17 15:03:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-17 15:03:38,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:38,375 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] [2021-12-17 15:03:38,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 15:03:38,376 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2033055594, now seen corresponding path program 1 times [2021-12-17 15:03:38,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:38,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73819453] [2021-12-17 15:03:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:38,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 15:03:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 15:03:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 15:03:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:03:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 15:03:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:38,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:38,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73819453] [2021-12-17 15:03:38,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73819453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:38,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:38,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:38,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271339253] [2021-12-17 15:03:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:38,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:38,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:38,461 INFO L87 Difference]: Start difference. First operand 1004 states and 1681 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) [2021-12-17 15:03:39,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:39,421 INFO L93 Difference]: Finished difference Result 2551 states and 4313 transitions. [2021-12-17 15:03:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:39,422 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 [2021-12-17 15:03:39,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:39,428 INFO L225 Difference]: With dead ends: 2551 [2021-12-17 15:03:39,429 INFO L226 Difference]: Without dead ends: 1668 [2021-12-17 15:03:39,432 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 [2021-12-17 15:03:39,433 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1012 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:39,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 1348 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:03:39,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-12-17 15:03:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1512. [2021-12-17 15:03:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1212 states have (on average 1.6113861386138615) internal successors, (1953), 1219 states have internal predecessors, (1953), 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) [2021-12-17 15:03:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2542 transitions. [2021-12-17 15:03:39,490 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2542 transitions. Word has length 110 [2021-12-17 15:03:39,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:39,490 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2542 transitions. [2021-12-17 15:03:39,490 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) [2021-12-17 15:03:39,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2542 transitions. [2021-12-17 15:03:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-17 15:03:39,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:39,496 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] [2021-12-17 15:03:39,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 15:03:39,496 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1439293862, now seen corresponding path program 1 times [2021-12-17 15:03:39,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:39,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078886197] [2021-12-17 15:03:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:39,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 15:03:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 15:03:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 15:03:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 15:03:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 15:03:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:39,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:39,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078886197] [2021-12-17 15:03:39,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078886197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:39,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:39,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:39,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577229309] [2021-12-17 15:03:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:39,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:39,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:39,570 INFO L87 Difference]: Start difference. First operand 1512 states and 2542 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) [2021-12-17 15:03:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:40,449 INFO L93 Difference]: Finished difference Result 3703 states and 6322 transitions. [2021-12-17 15:03:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:40,450 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 [2021-12-17 15:03:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:40,461 INFO L225 Difference]: With dead ends: 3703 [2021-12-17 15:03:40,461 INFO L226 Difference]: Without dead ends: 2437 [2021-12-17 15:03:40,466 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 [2021-12-17 15:03:40,466 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1010 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:40,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 1315 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 15:03:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-12-17 15:03:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2281. [2021-12-17 15:03:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 1858 states have (on average 1.6167922497308935) internal successors, (3004), 1865 states have internal predecessors, (3004), 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) [2021-12-17 15:03:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3855 transitions. [2021-12-17 15:03:40,581 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3855 transitions. Word has length 111 [2021-12-17 15:03:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:40,582 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 3855 transitions. [2021-12-17 15:03:40,582 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) [2021-12-17 15:03:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3855 transitions. [2021-12-17 15:03:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-17 15:03:40,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:40,588 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] [2021-12-17 15:03:40,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 15:03:40,588 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash -497333621, now seen corresponding path program 1 times [2021-12-17 15:03:40,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:40,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294472010] [2021-12-17 15:03:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:40,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 15:03:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 15:03:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 15:03:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 15:03:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:03:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:40,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:40,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294472010] [2021-12-17 15:03:40,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294472010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:40,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:40,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:40,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20148878] [2021-12-17 15:03:40,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:40,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:40,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:40,666 INFO L87 Difference]: Start difference. First operand 2281 states and 3855 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) [2021-12-17 15:03:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:41,565 INFO L93 Difference]: Finished difference Result 5497 states and 9456 transitions. [2021-12-17 15:03:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:41,566 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 [2021-12-17 15:03:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:41,613 INFO L225 Difference]: With dead ends: 5497 [2021-12-17 15:03:41,614 INFO L226 Difference]: Without dead ends: 3666 [2021-12-17 15:03:41,620 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 [2021-12-17 15:03:41,620 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1008 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:41,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 1315 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 15:03:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-12-17 15:03:41,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3510. [2021-12-17 15:03:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 2908 states have (on average 1.6200137551581844) internal successors, (4711), 2915 states have internal predecessors, (4711), 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) [2021-12-17 15:03:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5946 transitions. [2021-12-17 15:03:41,772 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5946 transitions. Word has length 112 [2021-12-17 15:03:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:41,773 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 5946 transitions. [2021-12-17 15:03:41,773 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) [2021-12-17 15:03:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5946 transitions. [2021-12-17 15:03:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 15:03:41,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:41,779 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] [2021-12-17 15:03:41,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 15:03:41,780 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1467419038, now seen corresponding path program 1 times [2021-12-17 15:03:41,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:41,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300615494] [2021-12-17 15:03:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:41,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 15:03:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:03:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 15:03:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 15:03:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 15:03:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:41,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:41,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300615494] [2021-12-17 15:03:41,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300615494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:41,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:41,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:41,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629805825] [2021-12-17 15:03:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:41,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:41,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:41,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:41,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:41,852 INFO L87 Difference]: Start difference. First operand 3510 states and 5946 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) [2021-12-17 15:03:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:42,839 INFO L93 Difference]: Finished difference Result 8445 states and 14603 transitions. [2021-12-17 15:03:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:42,839 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 [2021-12-17 15:03:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:42,863 INFO L225 Difference]: With dead ends: 8445 [2021-12-17 15:03:42,863 INFO L226 Difference]: Without dead ends: 5697 [2021-12-17 15:03:42,872 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 [2021-12-17 15:03:42,872 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1006 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 1320 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 15:03:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2021-12-17 15:03:43,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5541. [2021-12-17 15:03:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4563 states have (on average 1.613631382862152) internal successors, (7363), 4570 states have internal predecessors, (7363), 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) [2021-12-17 15:03:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9394 transitions. [2021-12-17 15:03:43,116 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9394 transitions. Word has length 113 [2021-12-17 15:03:43,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:43,116 INFO L470 AbstractCegarLoop]: Abstraction has 5541 states and 9394 transitions. [2021-12-17 15:03:43,117 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) [2021-12-17 15:03:43,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9394 transitions. [2021-12-17 15:03:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-17 15:03:43,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:43,127 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] [2021-12-17 15:03:43,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 15:03:43,128 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -678340145, now seen corresponding path program 1 times [2021-12-17 15:03:43,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:43,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940310885] [2021-12-17 15:03:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:43,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 15:03:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 15:03:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 15:03:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 15:03:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 15:03:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:43,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:43,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940310885] [2021-12-17 15:03:43,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940310885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:43,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:43,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:43,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798484652] [2021-12-17 15:03:43,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:43,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:43,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:43,202 INFO L87 Difference]: Start difference. First operand 5541 states and 9394 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) [2021-12-17 15:03:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:44,314 INFO L93 Difference]: Finished difference Result 13782 states and 23824 transitions. [2021-12-17 15:03:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:44,315 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 [2021-12-17 15:03:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:44,354 INFO L225 Difference]: With dead ends: 13782 [2021-12-17 15:03:44,354 INFO L226 Difference]: Without dead ends: 9380 [2021-12-17 15:03:44,366 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 [2021-12-17 15:03:44,366 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1004 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:44,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 1314 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:03:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2021-12-17 15:03:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 9224. [2021-12-17 15:03:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 7640 states have (on average 1.6111256544502617) internal successors, (12309), 7647 states have internal predecessors, (12309), 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) [2021-12-17 15:03:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 15630 transitions. [2021-12-17 15:03:44,735 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 15630 transitions. Word has length 114 [2021-12-17 15:03:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:44,735 INFO L470 AbstractCegarLoop]: Abstraction has 9224 states and 15630 transitions. [2021-12-17 15:03:44,736 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) [2021-12-17 15:03:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 15630 transitions. [2021-12-17 15:03:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:03:44,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:44,749 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] [2021-12-17 15:03:44,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 15:03:44,749 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:44,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1860754352, now seen corresponding path program 1 times [2021-12-17 15:03:44,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:44,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128800615] [2021-12-17 15:03:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:44,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 15:03:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 15:03:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 15:03:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 15:03:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 15:03:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:44,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:44,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128800615] [2021-12-17 15:03:44,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128800615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:44,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:44,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:44,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422749548] [2021-12-17 15:03:44,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:44,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:44,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:44,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:44,820 INFO L87 Difference]: Start difference. First operand 9224 states and 15630 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) [2021-12-17 15:03:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:46,083 INFO L93 Difference]: Finished difference Result 23966 states and 41370 transitions. [2021-12-17 15:03:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:46,083 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 [2021-12-17 15:03:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:46,133 INFO L225 Difference]: With dead ends: 23966 [2021-12-17 15:03:46,133 INFO L226 Difference]: Without dead ends: 16333 [2021-12-17 15:03:46,155 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 [2021-12-17 15:03:46,156 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1002 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:46,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 1365 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:03:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2021-12-17 15:03:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 16177. [2021-12-17 15:03:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13390 states have (on average 1.6020164301717699) internal successors, (21451), 13397 states have internal predecessors, (21451), 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) [2021-12-17 15:03:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 27322 transitions. [2021-12-17 15:03:46,845 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 27322 transitions. Word has length 115 [2021-12-17 15:03:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:46,846 INFO L470 AbstractCegarLoop]: Abstraction has 16177 states and 27322 transitions. [2021-12-17 15:03:46,846 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) [2021-12-17 15:03:46,846 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 27322 transitions. [2021-12-17 15:03:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 15:03:46,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:46,861 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] [2021-12-17 15:03:46,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 15:03:46,861 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:46,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1941197296, now seen corresponding path program 1 times [2021-12-17 15:03:46,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:46,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256042168] [2021-12-17 15:03:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:46,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 15:03:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 15:03:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 15:03:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 15:03:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 15:03:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:46,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:46,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256042168] [2021-12-17 15:03:46,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256042168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:46,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:46,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:46,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179060562] [2021-12-17 15:03:46,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:46,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:46,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:46,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:46,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:46,932 INFO L87 Difference]: Start difference. First operand 16177 states and 27322 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) [2021-12-17 15:03:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:48,959 INFO L93 Difference]: Finished difference Result 42932 states and 73969 transitions. [2021-12-17 15:03:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:48,959 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 [2021-12-17 15:03:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:49,103 INFO L225 Difference]: With dead ends: 42932 [2021-12-17 15:03:49,103 INFO L226 Difference]: Without dead ends: 28988 [2021-12-17 15:03:49,141 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 [2021-12-17 15:03:49,142 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1000 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:49,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 1320 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 15:03:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28988 states. [2021-12-17 15:03:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28988 to 28832. [2021-12-17 15:03:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 24006 states have (on average 1.597725568607848) internal successors, (38355), 24013 states have internal predecessors, (38355), 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) [2021-12-17 15:03:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 48578 transitions. [2021-12-17 15:03:50,422 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 48578 transitions. Word has length 116 [2021-12-17 15:03:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:50,423 INFO L470 AbstractCegarLoop]: Abstraction has 28832 states and 48578 transitions. [2021-12-17 15:03:50,423 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) [2021-12-17 15:03:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 48578 transitions. [2021-12-17 15:03:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-17 15:03:50,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:50,443 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] [2021-12-17 15:03:50,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 15:03:50,443 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash -732373582, now seen corresponding path program 1 times [2021-12-17 15:03:50,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:50,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195797378] [2021-12-17 15:03:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:50,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 15:03:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 15:03:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 15:03:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 15:03:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 15:03:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:50,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195797378] [2021-12-17 15:03:50,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195797378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:50,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:50,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:50,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793347878] [2021-12-17 15:03:50,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:50,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:50,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:50,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:50,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:50,529 INFO L87 Difference]: Start difference. First operand 28832 states and 48578 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) [2021-12-17 15:03:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:52,896 INFO L93 Difference]: Finished difference Result 78694 states and 134728 transitions. [2021-12-17 15:03:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:52,896 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 [2021-12-17 15:03:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:53,100 INFO L225 Difference]: With dead ends: 78694 [2021-12-17 15:03:53,100 INFO L226 Difference]: Without dead ends: 52867 [2021-12-17 15:03:53,171 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 [2021-12-17 15:03:53,171 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 998 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:53,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 1314 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 15:03:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52867 states. [2021-12-17 15:03:55,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52867 to 52711. [2021-12-17 15:03:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52711 states, 44170 states have (on average 1.5921213493321258) internal successors, (70324), 44177 states have internal predecessors, (70324), 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) [2021-12-17 15:03:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52711 states to 52711 states and 88509 transitions. [2021-12-17 15:03:55,773 INFO L78 Accepts]: Start accepts. Automaton has 52711 states and 88509 transitions. Word has length 117 [2021-12-17 15:03:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:03:55,774 INFO L470 AbstractCegarLoop]: Abstraction has 52711 states and 88509 transitions. [2021-12-17 15:03:55,774 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) [2021-12-17 15:03:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 52711 states and 88509 transitions. [2021-12-17 15:03:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-17 15:03:55,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:03:55,795 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] [2021-12-17 15:03:55,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 15:03:55,795 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:03:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:03:55,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1116888912, now seen corresponding path program 1 times [2021-12-17 15:03:55,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:03:55,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140761164] [2021-12-17 15:03:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:03:55,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:03:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:03:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:03:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:03:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:03:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:03:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:03:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:03:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 15:03:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 15:03:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 15:03:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 15:03:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:03:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:03:55,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:03:55,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140761164] [2021-12-17 15:03:55,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140761164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:03:55,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:03:55,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:03:55,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432832876] [2021-12-17 15:03:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:03:55,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:03:55,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:03:55,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:03:55,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:03:55,889 INFO L87 Difference]: Start difference. First operand 52711 states and 88509 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) [2021-12-17 15:03:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:03:59,217 INFO L93 Difference]: Finished difference Result 98465 states and 168915 transitions. [2021-12-17 15:03:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 15:03:59,218 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 [2021-12-17 15:03:59,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:03:59,608 INFO L225 Difference]: With dead ends: 98465 [2021-12-17 15:03:59,608 INFO L226 Difference]: Without dead ends: 98326 [2021-12-17 15:03:59,653 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 [2021-12-17 15:03:59,654 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 996 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:03:59,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1320 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:03:59,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98326 states. [2021-12-17 15:04:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98326 to 98170. [2021-12-17 15:04:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98170 states, 82830 states have (on average 1.5851020161777134) internal successors, (131294), 82837 states have internal predecessors, (131294), 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) [2021-12-17 15:04:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98170 states to 98170 states and 164123 transitions. [2021-12-17 15:04:03,858 INFO L78 Accepts]: Start accepts. Automaton has 98170 states and 164123 transitions. Word has length 118 [2021-12-17 15:04:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:03,858 INFO L470 AbstractCegarLoop]: Abstraction has 98170 states and 164123 transitions. [2021-12-17 15:04:03,859 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) [2021-12-17 15:04:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 98170 states and 164123 transitions. [2021-12-17 15:04:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-17 15:04:03,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:03,881 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] [2021-12-17 15:04:03,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 15:04:03,882 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2090243313, now seen corresponding path program 1 times [2021-12-17 15:04:03,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:03,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134724920] [2021-12-17 15:04:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:03,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 15:04:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 15:04:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 15:04:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 15:04:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 15:04:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:04,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:04,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134724920] [2021-12-17 15:04:04,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134724920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:04,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:04,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 15:04:04,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639132455] [2021-12-17 15:04:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:04,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 15:04:04,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 15:04:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:04:04,111 INFO L87 Difference]: Start difference. First operand 98170 states and 164123 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) [2021-12-17 15:04:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:04:13,699 INFO L93 Difference]: Finished difference Result 196327 states and 340094 transitions. [2021-12-17 15:04:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-17 15:04:13,700 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 [2021-12-17 15:04:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:04:14,792 INFO L225 Difference]: With dead ends: 196327 [2021-12-17 15:04:14,792 INFO L226 Difference]: Without dead ends: 196194 [2021-12-17 15:04:14,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=691, Invalid=2849, Unknown=0, NotChecked=0, Total=3540 [2021-12-17 15:04:14,874 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 4409 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 6480 mSolverCounterSat, 1985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4421 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 8465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1985 IncrementalHoareTripleChecker+Valid, 6480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:04:14,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4421 Valid, 2979 Invalid, 8465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1985 Valid, 6480 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 15:04:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196194 states. [2021-12-17 15:04:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196194 to 195593. [2021-12-17 15:04:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195593 states, 165097 states have (on average 1.5858495308818452) internal successors, (261819), 165003 states have internal predecessors, (261819), 30445 states have call successors, (30445), 41 states have call predecessors, (30445), 50 states have return successors, (38105), 30556 states have call predecessors, (38105), 30442 states have call successors, (38105) [2021-12-17 15:04:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195593 states to 195593 states and 330369 transitions. [2021-12-17 15:04:24,367 INFO L78 Accepts]: Start accepts. Automaton has 195593 states and 330369 transitions. Word has length 119 [2021-12-17 15:04:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:04:24,367 INFO L470 AbstractCegarLoop]: Abstraction has 195593 states and 330369 transitions. [2021-12-17 15:04:24,368 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-17 15:04:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 195593 states and 330369 transitions. [2021-12-17 15:04:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-17 15:04:24,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:04:24,404 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:04:24,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 15:04:24,404 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:04:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:04:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1622170436, now seen corresponding path program 1 times [2021-12-17 15:04:24,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:04:24,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985157062] [2021-12-17 15:04:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:04:24,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:04:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 15:04:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 15:04:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 15:04:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 15:04:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 15:04:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 15:04:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 15:04:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 15:04:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 15:04:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 15:04:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 15:04:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:04:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 15:04:24,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:04:24,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985157062] [2021-12-17 15:04:24,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985157062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:04:24,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:04:24,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 15:04:24,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110438962] [2021-12-17 15:04:24,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:04:24,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 15:04:24,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:04:24,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 15:04:24,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:04:24,508 INFO L87 Difference]: Start difference. First operand 195593 states and 330369 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)