./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_product15.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 b1bbd85396e3eb1de7562114efc1b104d28592355874c6166c296894ed6f999d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:32:44,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:32:44,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:32:44,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:32:44,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:32:44,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:32:44,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:32:44,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:32:44,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:32:44,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:32:44,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:32:44,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:32:44,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:32:44,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:32:44,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:32:44,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:32:44,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:32:44,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:32:44,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:32:44,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:32:44,643 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:32:44,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:32:44,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:32:44,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:32:44,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:32:44,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:32:44,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:32:44,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:32:44,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:32:44,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:32:44,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:32:44,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:32:44,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:32:44,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:32:44,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:32:44,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:32:44,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:32:44,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:32:44,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:32:44,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:32:44,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:32:44,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:32:44,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:32:44,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:32:44,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:32:44,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:32:44,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:32:44,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:32:44,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:32:44,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:32:44,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:32:44,683 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:32:44,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:32:44,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:32:44,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:32:44,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:32:44,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:32:44,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:32:44,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:32:44,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:32:44,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:32:44,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:32:44,686 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:32:44,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:32:44,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:32:44,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:32:44,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:32:44,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:32:44,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:32:44,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:32:44,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:32:44,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:32:44,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:32:44,688 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:32:44,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:32:44,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:32:44,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1bbd85396e3eb1de7562114efc1b104d28592355874c6166c296894ed6f999d [2022-07-22 17:32:44,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:32:44,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:32:44,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:32:44,860 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:32:44,860 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:32:44,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product15.cil.c [2022-07-22 17:32:44,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec48bea8f/412c6961027c4adeb50b144b2022d378/FLAGf01d35928 [2022-07-22 17:32:45,376 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:32:45,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product15.cil.c [2022-07-22 17:32:45,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec48bea8f/412c6961027c4adeb50b144b2022d378/FLAGf01d35928 [2022-07-22 17:32:45,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec48bea8f/412c6961027c4adeb50b144b2022d378 [2022-07-22 17:32:45,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:32:45,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:32:45,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:32:45,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:32:45,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:32:45,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:45,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dab9518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45, skipping insertion in model container [2022-07-22 17:32:45,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:45,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:32:45,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:32:45,820 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_product15.cil.c[44955,44968] [2022-07-22 17:32:45,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:32:45,882 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:32:45,945 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_product15.cil.c[44955,44968] [2022-07-22 17:32:45,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:32:45,992 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:32:45,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45 WrapperNode [2022-07-22 17:32:45,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:32:45,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:32:45,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:32:45,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:32:46,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,066 INFO L137 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 55, calls inlined = 46, statements flattened = 889 [2022-07-22 17:32:46,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:32:46,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:32:46,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:32:46,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:32:46,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:32:46,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:32:46,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:32:46,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:32:46,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (1/1) ... [2022-07-22 17:32:46,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:32:46,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:46,161 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) [2022-07-22 17:32:46,162 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 [2022-07-22 17:32:46,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-22 17:32:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-22 17:32:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-22 17:32:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-22 17:32:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-22 17:32:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-22 17:32:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-22 17:32:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-22 17:32:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-22 17:32:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-22 17:32:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-22 17:32:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-22 17:32:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-22 17:32:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-22 17:32:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-22 17:32:46,201 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-22 17:32:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-22 17:32:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-22 17:32:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-22 17:32:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:32:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-22 17:32:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-22 17:32:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-22 17:32:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-22 17:32:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-22 17:32:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-22 17:32:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-22 17:32:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-22 17:32:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-22 17:32:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-22 17:32:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-22 17:32:46,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-22 17:32:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-22 17:32:46,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-22 17:32:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:32:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-22 17:32:46,204 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-22 17:32:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:32:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:32:46,333 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:32:46,335 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:32:46,771 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:32:46,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:32:46,777 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:32:46,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:32:46 BoogieIcfgContainer [2022-07-22 17:32:46,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:32:46,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:32:46,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:32:46,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:32:46,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:32:45" (1/3) ... [2022-07-22 17:32:46,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ea35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:32:46, skipping insertion in model container [2022-07-22 17:32:46,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:32:45" (2/3) ... [2022-07-22 17:32:46,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ea35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:32:46, skipping insertion in model container [2022-07-22 17:32:46,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:32:46" (3/3) ... [2022-07-22 17:32:46,784 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product15.cil.c [2022-07-22 17:32:46,794 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:32:46,794 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:32:46,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:32:46,865 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b76fd68, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4111f7a7 [2022-07-22 17:32:46,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:32:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 226 states have (on average 1.5442477876106195) internal successors, (349), 230 states have internal predecessors, (349), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-22 17:32:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 17:32:46,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:46,903 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:32:46,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:46,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:46,909 INFO L85 PathProgramCache]: Analyzing trace with hash -424898417, now seen corresponding path program 1 times [2022-07-22 17:32:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754934974] [2022-07-22 17:32:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:46,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:32:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 17:32:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:32:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:32:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:32:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:32:47,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:47,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754934974] [2022-07-22 17:32:47,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754934974] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:47,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095458546] [2022-07-22 17:32:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:47,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:47,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:47,327 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) [2022-07-22 17:32:47,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:32:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:47,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 17:32:47,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:32:47,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:47,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095458546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:47,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:47,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-22 17:32:47,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664574449] [2022-07-22 17:32:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:47,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:32:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:47,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:32:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:47,680 INFO L87 Difference]: Start difference. First operand has 287 states, 226 states have (on average 1.5442477876106195) internal successors, (349), 230 states have internal predecessors, (349), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) 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) [2022-07-22 17:32:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:47,714 INFO L93 Difference]: Finished difference Result 420 states and 620 transitions. [2022-07-22 17:32:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:32:47,716 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 [2022-07-22 17:32:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:47,725 INFO L225 Difference]: With dead ends: 420 [2022-07-22 17:32:47,726 INFO L226 Difference]: Without dead ends: 280 [2022-07-22 17:32:47,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:47,731 INFO L413 NwaCegarLoop]: 429 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, 429 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 [2022-07-22 17:32:47,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-22 17:32:47,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-22 17:32:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 220 states have (on average 1.5363636363636364) internal successors, (338), 223 states have internal predecessors, (338), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-22 17:32:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 421 transitions. [2022-07-22 17:32:47,774 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 421 transitions. Word has length 89 [2022-07-22 17:32:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:47,776 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 421 transitions. [2022-07-22 17:32:47,776 INFO L496 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) [2022-07-22 17:32:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 421 transitions. [2022-07-22 17:32:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 17:32:47,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:47,779 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:32:47,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:47,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 17:32:47,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1235825051, now seen corresponding path program 1 times [2022-07-22 17:32:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:47,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935228270] [2022-07-22 17:32:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:32:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:32:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:32:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:32:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:32:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:32:48,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:48,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935228270] [2022-07-22 17:32:48,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935228270] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:48,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395770141] [2022-07-22 17:32:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:48,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:48,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:48,126 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) [2022-07-22 17:32:48,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:32:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:32:48,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:32:48,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:48,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395770141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:48,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:48,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:32:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417613265] [2022-07-22 17:32:48,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:48,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:32:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:32:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:48,393 INFO L87 Difference]: Start difference. First operand 280 states and 421 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) [2022-07-22 17:32:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:48,418 INFO L93 Difference]: Finished difference Result 410 states and 601 transitions. [2022-07-22 17:32:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:32:48,419 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 [2022-07-22 17:32:48,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:48,428 INFO L225 Difference]: With dead ends: 410 [2022-07-22 17:32:48,428 INFO L226 Difference]: Without dead ends: 283 [2022-07-22 17:32:48,431 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:32:48,432 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 836 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 [2022-07-22 17:32:48,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 836 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-22 17:32:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2022-07-22 17:32:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 222 states have (on average 1.5315315315315314) internal successors, (340), 225 states have internal predecessors, (340), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-22 17:32:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 423 transitions. [2022-07-22 17:32:48,449 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 423 transitions. Word has length 90 [2022-07-22 17:32:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:48,450 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 423 transitions. [2022-07-22 17:32:48,450 INFO L496 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) [2022-07-22 17:32:48,450 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 423 transitions. [2022-07-22 17:32:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 17:32:48,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:48,453 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:48,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 17:32:48,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1363663514, now seen corresponding path program 1 times [2022-07-22 17:32:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:48,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546516261] [2022-07-22 17:32:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:32:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:32:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:32:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:32:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:32:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:48,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:48,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546516261] [2022-07-22 17:32:48,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546516261] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:48,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670567042] [2022-07-22 17:32:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:48,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:48,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:48,774 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) [2022-07-22 17:32:48,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:32:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:48,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:32:48,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:32:48,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:48,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670567042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:48,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:48,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:32:48,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53549036] [2022-07-22 17:32:48,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:48,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:32:48,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:32:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:48,984 INFO L87 Difference]: Start difference. First operand 282 states and 423 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (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) [2022-07-22 17:32:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:49,001 INFO L93 Difference]: Finished difference Result 594 states and 905 transitions. [2022-07-22 17:32:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:32:49,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (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 99 [2022-07-22 17:32:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:49,004 INFO L225 Difference]: With dead ends: 594 [2022-07-22 17:32:49,004 INFO L226 Difference]: Without dead ends: 339 [2022-07-22 17:32:49,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:32:49,006 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 107 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 820 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 [2022-07-22 17:32:49,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 820 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-22 17:32:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 331. [2022-07-22 17:32:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 260 states have (on average 1.5461538461538462) internal successors, (402), 263 states have internal predecessors, (402), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-22 17:32:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 507 transitions. [2022-07-22 17:32:49,021 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 507 transitions. Word has length 99 [2022-07-22 17:32:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:49,022 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 507 transitions. [2022-07-22 17:32:49,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (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) [2022-07-22 17:32:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 507 transitions. [2022-07-22 17:32:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 17:32:49,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:49,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:49,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:49,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:49,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1065487752, now seen corresponding path program 1 times [2022-07-22 17:32:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:49,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090583752] [2022-07-22 17:32:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:49,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:32:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:32:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:32:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:32:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:32:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:32:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:32:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:32:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:49,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:49,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090583752] [2022-07-22 17:32:49,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090583752] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:49,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958017091] [2022-07-22 17:32:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:49,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:49,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:49,343 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) [2022-07-22 17:32:49,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:32:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:32:49,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:32:49,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:49,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958017091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:49,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:49,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-22 17:32:49,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373397878] [2022-07-22 17:32:49,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:49,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:32:49,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:32:49,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:32:49,595 INFO L87 Difference]: Start difference. First operand 331 states and 507 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 17:32:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:49,643 INFO L93 Difference]: Finished difference Result 653 states and 1004 transitions. [2022-07-22 17:32:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:32:49,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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 100 [2022-07-22 17:32:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:49,646 INFO L225 Difference]: With dead ends: 653 [2022-07-22 17:32:49,646 INFO L226 Difference]: Without dead ends: 333 [2022-07-22 17:32:49,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:32:49,648 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 125 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:49,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1503 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-22 17:32:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-07-22 17:32:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 261 states have (on average 1.5440613026819923) internal successors, (403), 265 states have internal predecessors, (403), 53 states have call successors, (53), 17 states have call predecessors, (53), 18 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2022-07-22 17:32:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 510 transitions. [2022-07-22 17:32:49,660 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 510 transitions. Word has length 100 [2022-07-22 17:32:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:49,661 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 510 transitions. [2022-07-22 17:32:49,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 17:32:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 510 transitions. [2022-07-22 17:32:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 17:32:49,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:49,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:49,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:49,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:49,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:49,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:49,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1218296481, now seen corresponding path program 1 times [2022-07-22 17:32:49,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:49,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508466019] [2022-07-22 17:32:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:32:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:32:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:32:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:32:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:32:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:32:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:32:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:32:50,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:50,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508466019] [2022-07-22 17:32:50,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508466019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:50,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279717873] [2022-07-22 17:32:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:50,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:50,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:50,005 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) [2022-07-22 17:32:50,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:32:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 17:32:50,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:32:50,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:32:50,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279717873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:50,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:32:50,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 17:32:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991579714] [2022-07-22 17:32:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:50,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:32:50,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:32:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:32:50,244 INFO L87 Difference]: Start difference. First operand 333 states and 510 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-07-22 17:32:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:50,304 INFO L93 Difference]: Finished difference Result 655 states and 1009 transitions. [2022-07-22 17:32:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:32:50,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 101 [2022-07-22 17:32:50,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:50,307 INFO L225 Difference]: With dead ends: 655 [2022-07-22 17:32:50,307 INFO L226 Difference]: Without dead ends: 335 [2022-07-22 17:32:50,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:32:50,309 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 124 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:50,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1492 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:32:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-22 17:32:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-07-22 17:32:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 262 states have (on average 1.5419847328244274) internal successors, (404), 267 states have internal predecessors, (404), 53 states have call successors, (53), 17 states have call predecessors, (53), 19 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-07-22 17:32:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 516 transitions. [2022-07-22 17:32:50,321 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 516 transitions. Word has length 101 [2022-07-22 17:32:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:50,321 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 516 transitions. [2022-07-22 17:32:50,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-07-22 17:32:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 516 transitions. [2022-07-22 17:32:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 17:32:50,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:50,323 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:32:50,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 17:32:50,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:50,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash 911760390, now seen corresponding path program 1 times [2022-07-22 17:32:50,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:50,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242123251] [2022-07-22 17:32:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:50,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:32:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:32:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:32:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:32:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:32:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:32:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:50,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:50,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242123251] [2022-07-22 17:32:50,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242123251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:50,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:50,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:32:50,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545233571] [2022-07-22 17:32:50,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:50,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:32:50,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:32:50,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:50,657 INFO L87 Difference]: Start difference. First operand 335 states and 516 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-22 17:32:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:51,764 INFO L93 Difference]: Finished difference Result 740 states and 1142 transitions. [2022-07-22 17:32:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:32:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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 102 [2022-07-22 17:32:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:51,769 INFO L225 Difference]: With dead ends: 740 [2022-07-22 17:32:51,769 INFO L226 Difference]: Without dead ends: 428 [2022-07-22 17:32:51,772 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:32:51,773 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 971 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:51,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1287 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:32:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-07-22 17:32:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 335. [2022-07-22 17:32:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 262 states have (on average 1.5419847328244274) internal successors, (404), 267 states have internal predecessors, (404), 53 states have call successors, (53), 17 states have call predecessors, (53), 19 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2022-07-22 17:32:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 515 transitions. [2022-07-22 17:32:51,799 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 515 transitions. Word has length 102 [2022-07-22 17:32:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:51,799 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 515 transitions. [2022-07-22 17:32:51,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-22 17:32:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 515 transitions. [2022-07-22 17:32:51,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 17:32:51,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:51,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:51,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:32:51,801 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash -257413121, now seen corresponding path program 2 times [2022-07-22 17:32:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:51,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916704862] [2022-07-22 17:32:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:32:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:32:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:32:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:32:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:32:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:32:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:32:51,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:51,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916704862] [2022-07-22 17:32:51,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916704862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:51,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:51,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:32:51,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475529412] [2022-07-22 17:32:51,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:51,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:32:51,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:32:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:32:51,875 INFO L87 Difference]: Start difference. First operand 335 states and 515 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-22 17:32:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:52,899 INFO L93 Difference]: Finished difference Result 742 states and 1145 transitions. [2022-07-22 17:32:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:32:52,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 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 103 [2022-07-22 17:32:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:52,901 INFO L225 Difference]: With dead ends: 742 [2022-07-22 17:32:52,901 INFO L226 Difference]: Without dead ends: 430 [2022-07-22 17:32:52,902 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:32:52,903 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 966 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:52,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1288 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:32:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-07-22 17:32:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2022-07-22 17:32:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 269 states have internal predecessors, (405), 53 states have call successors, (53), 17 states have call predecessors, (53), 20 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2022-07-22 17:32:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 518 transitions. [2022-07-22 17:32:52,918 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 518 transitions. Word has length 103 [2022-07-22 17:32:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:52,918 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 518 transitions. [2022-07-22 17:32:52,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-22 17:32:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 518 transitions. [2022-07-22 17:32:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 17:32:52,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:52,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:52,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:32:52,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1904686847, now seen corresponding path program 1 times [2022-07-22 17:32:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:52,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606453865] [2022-07-22 17:32:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:32:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:32:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:53,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:32:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:53,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:32:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:53,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:32:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:32:53,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:53,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606453865] [2022-07-22 17:32:53,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606453865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:53,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:53,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:32:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507663456] [2022-07-22 17:32:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:53,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:32:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:32:53,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:32:53,010 INFO L87 Difference]: Start difference. First operand 337 states and 518 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 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) [2022-07-22 17:32:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:54,464 INFO L93 Difference]: Finished difference Result 740 states and 1140 transitions. [2022-07-22 17:32:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:32:54,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 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 104 [2022-07-22 17:32:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:54,467 INFO L225 Difference]: With dead ends: 740 [2022-07-22 17:32:54,467 INFO L226 Difference]: Without dead ends: 430 [2022-07-22 17:32:54,468 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:32:54,468 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1078 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:54,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 1584 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:32:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-07-22 17:32:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 337. [2022-07-22 17:32:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 269 states have internal predecessors, (405), 53 states have call successors, (53), 17 states have call predecessors, (53), 20 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-07-22 17:32:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 517 transitions. [2022-07-22 17:32:54,482 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 517 transitions. Word has length 104 [2022-07-22 17:32:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:54,483 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 517 transitions. [2022-07-22 17:32:54,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 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) [2022-07-22 17:32:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 517 transitions. [2022-07-22 17:32:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 17:32:54,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:54,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:54,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:32:54,484 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash -194989370, now seen corresponding path program 2 times [2022-07-22 17:32:54,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:54,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428150028] [2022-07-22 17:32:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:32:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:32:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:32:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:32:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:32:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:32:54,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:54,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428150028] [2022-07-22 17:32:54,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428150028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:54,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:54,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:32:54,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37315014] [2022-07-22 17:32:54,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:54,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:32:54,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:32:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:32:54,574 INFO L87 Difference]: Start difference. First operand 337 states and 517 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 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) [2022-07-22 17:32:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:55,993 INFO L93 Difference]: Finished difference Result 742 states and 1146 transitions. [2022-07-22 17:32:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:32:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 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 105 [2022-07-22 17:32:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:56,002 INFO L225 Difference]: With dead ends: 742 [2022-07-22 17:32:56,002 INFO L226 Difference]: Without dead ends: 432 [2022-07-22 17:32:56,004 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:32:56,005 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1073 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:56,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1585 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:32:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-22 17:32:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 339. [2022-07-22 17:32:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.5378787878787878) internal successors, (406), 271 states have internal predecessors, (406), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-22 17:32:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 523 transitions. [2022-07-22 17:32:56,022 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 523 transitions. Word has length 105 [2022-07-22 17:32:56,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:56,023 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 523 transitions. [2022-07-22 17:32:56,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 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) [2022-07-22 17:32:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 523 transitions. [2022-07-22 17:32:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 17:32:56,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:56,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:32:56,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:32:56,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:56,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash 816721852, now seen corresponding path program 1 times [2022-07-22 17:32:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:56,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333954914] [2022-07-22 17:32:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:32:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:32:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:32:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:32:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:32:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 17:32:56,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:56,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333954914] [2022-07-22 17:32:56,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333954914] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:32:56,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420425652] [2022-07-22 17:32:56,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:56,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:56,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:32:56,178 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) [2022-07-22 17:32:56,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:32:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:56,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:32:56,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:32:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:56,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:32:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:56,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420425652] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:32:56,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:32:56,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-22 17:32:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883528410] [2022-07-22 17:32:56,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:32:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 17:32:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 17:32:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:32:56,460 INFO L87 Difference]: Start difference. First operand 339 states and 523 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 17:32:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:58,747 INFO L93 Difference]: Finished difference Result 1421 states and 2374 transitions. [2022-07-22 17:32:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 17:32:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 106 [2022-07-22 17:32:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:58,752 INFO L225 Difference]: With dead ends: 1421 [2022-07-22 17:32:58,752 INFO L226 Difference]: Without dead ends: 1113 [2022-07-22 17:32:58,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-22 17:32:58,754 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 2568 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 3975 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 4938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 3975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:58,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2570 Valid, 3426 Invalid, 4938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 3975 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:32:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-07-22 17:32:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 667. [2022-07-22 17:32:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 528 states have (on average 1.5852272727272727) internal successors, (837), 535 states have internal predecessors, (837), 117 states have call successors, (117), 17 states have call predecessors, (117), 21 states have return successors, (138), 116 states have call predecessors, (138), 116 states have call successors, (138) [2022-07-22 17:32:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1092 transitions. [2022-07-22 17:32:58,821 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1092 transitions. Word has length 106 [2022-07-22 17:32:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:58,822 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1092 transitions. [2022-07-22 17:32:58,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 17:32:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1092 transitions. [2022-07-22 17:32:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:32:58,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:58,825 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:32:58,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:32:59,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:32:59,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:59,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -725397729, now seen corresponding path program 1 times [2022-07-22 17:32:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:59,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355787227] [2022-07-22 17:32:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:32:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:32:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:32:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:32:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:32:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:59,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:59,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355787227] [2022-07-22 17:32:59,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355787227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:59,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:59,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:32:59,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309681419] [2022-07-22 17:32:59,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:59,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:32:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:32:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:32:59,114 INFO L87 Difference]: Start difference. First operand 667 states and 1092 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) [2022-07-22 17:32:59,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:59,853 INFO L93 Difference]: Finished difference Result 1657 states and 2777 transitions. [2022-07-22 17:32:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:32:59,854 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 [2022-07-22 17:32:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:59,859 INFO L225 Difference]: With dead ends: 1657 [2022-07-22 17:32:59,859 INFO L226 Difference]: Without dead ends: 1068 [2022-07-22 17:32:59,862 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:32:59,862 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 961 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1138 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:32:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-07-22 17:32:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 967. [2022-07-22 17:32:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 764 states have (on average 1.5994764397905759) internal successors, (1222), 771 states have internal predecessors, (1222), 181 states have call successors, (181), 17 states have call predecessors, (181), 21 states have return successors, (212), 180 states have call predecessors, (212), 180 states have call successors, (212) [2022-07-22 17:32:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1615 transitions. [2022-07-22 17:32:59,910 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1615 transitions. Word has length 109 [2022-07-22 17:32:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:59,911 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1615 transitions. [2022-07-22 17:32:59,911 INFO L496 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) [2022-07-22 17:32:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1615 transitions. [2022-07-22 17:32:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 17:32:59,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:32:59,914 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:32:59,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:32:59,914 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:32:59,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:32:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1316821944, now seen corresponding path program 1 times [2022-07-22 17:32:59,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:32:59,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814030494] [2022-07-22 17:32:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:32:59,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:32:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:32:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:32:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:32:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:32:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:32:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:32:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:32:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:32:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:32:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:32:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:32:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:32:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:32:59,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:32:59,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814030494] [2022-07-22 17:32:59,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814030494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:32:59,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:32:59,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:32:59,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322781814] [2022-07-22 17:32:59,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:32:59,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:32:59,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:32:59,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:32:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:32:59,989 INFO L87 Difference]: Start difference. First operand 967 states and 1615 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) [2022-07-22 17:33:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:00,896 INFO L93 Difference]: Finished difference Result 2397 states and 4057 transitions. [2022-07-22 17:33:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:00,896 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 [2022-07-22 17:33:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:00,903 INFO L225 Difference]: With dead ends: 2397 [2022-07-22 17:33:00,903 INFO L226 Difference]: Without dead ends: 1561 [2022-07-22 17:33:00,906 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:00,906 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 959 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:00,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1155 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2022-07-22 17:33:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1460. [2022-07-22 17:33:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1162 states have (on average 1.604130808950086) internal successors, (1864), 1169 states have internal predecessors, (1864), 276 states have call successors, (276), 17 states have call predecessors, (276), 21 states have return successors, (307), 275 states have call predecessors, (307), 275 states have call successors, (307) [2022-07-22 17:33:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2447 transitions. [2022-07-22 17:33:00,985 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2447 transitions. Word has length 110 [2022-07-22 17:33:00,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:00,985 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2447 transitions. [2022-07-22 17:33:00,986 INFO L496 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) [2022-07-22 17:33:00,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2447 transitions. [2022-07-22 17:33:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:33:00,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:00,990 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:00,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:33:00,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:00,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash 15321997, now seen corresponding path program 1 times [2022-07-22 17:33:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:00,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67461618] [2022-07-22 17:33:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:33:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:33:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:33:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:33:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:33:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:01,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:01,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67461618] [2022-07-22 17:33:01,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67461618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:01,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:01,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011008494] [2022-07-22 17:33:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:01,050 INFO L87 Difference]: Start difference. First operand 1460 states and 2447 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) [2022-07-22 17:33:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:01,890 INFO L93 Difference]: Finished difference Result 3499 states and 5975 transitions. [2022-07-22 17:33:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:01,890 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 [2022-07-22 17:33:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:01,899 INFO L225 Difference]: With dead ends: 3499 [2022-07-22 17:33:01,900 INFO L226 Difference]: Without dead ends: 2305 [2022-07-22 17:33:01,903 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:01,903 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 957 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:01,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1128 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2022-07-22 17:33:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2204. [2022-07-22 17:33:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1783 states have (on average 1.6079641054402691) internal successors, (2867), 1790 states have internal predecessors, (2867), 399 states have call successors, (399), 17 states have call predecessors, (399), 21 states have return successors, (446), 398 states have call predecessors, (446), 398 states have call successors, (446) [2022-07-22 17:33:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3712 transitions. [2022-07-22 17:33:02,007 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3712 transitions. Word has length 111 [2022-07-22 17:33:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:02,007 INFO L495 AbstractCegarLoop]: Abstraction has 2204 states and 3712 transitions. [2022-07-22 17:33:02,007 INFO L496 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) [2022-07-22 17:33:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3712 transitions. [2022-07-22 17:33:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:33:02,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:02,013 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:02,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:33:02,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1908613625, now seen corresponding path program 1 times [2022-07-22 17:33:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:02,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124226608] [2022-07-22 17:33:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:02,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:33:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:33:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:33:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:33:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:33:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:02,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:02,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124226608] [2022-07-22 17:33:02,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124226608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:02,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:02,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66652119] [2022-07-22 17:33:02,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:02,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:02,088 INFO L87 Difference]: Start difference. First operand 2204 states and 3712 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) [2022-07-22 17:33:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:03,012 INFO L93 Difference]: Finished difference Result 5208 states and 8955 transitions. [2022-07-22 17:33:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:03,013 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 [2022-07-22 17:33:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:03,032 INFO L225 Difference]: With dead ends: 5208 [2022-07-22 17:33:03,032 INFO L226 Difference]: Without dead ends: 3489 [2022-07-22 17:33:03,037 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:03,038 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 955 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:03,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1128 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2022-07-22 17:33:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3388. [2022-07-22 17:33:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 2788 states have (on average 1.6101147776183644) internal successors, (4489), 2795 states have internal predecessors, (4489), 578 states have call successors, (578), 17 states have call predecessors, (578), 21 states have return successors, (651), 577 states have call predecessors, (651), 577 states have call successors, (651) [2022-07-22 17:33:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 5718 transitions. [2022-07-22 17:33:03,214 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 5718 transitions. Word has length 112 [2022-07-22 17:33:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:03,214 INFO L495 AbstractCegarLoop]: Abstraction has 3388 states and 5718 transitions. [2022-07-22 17:33:03,214 INFO L496 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) [2022-07-22 17:33:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 5718 transitions. [2022-07-22 17:33:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:33:03,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:03,220 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:03,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:33:03,221 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:03,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash -593063639, now seen corresponding path program 1 times [2022-07-22 17:33:03,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:03,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646549816] [2022-07-22 17:33:03,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:03,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:33:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:33:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:33:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:33:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:33:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:03,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:03,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646549816] [2022-07-22 17:33:03,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646549816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:03,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:03,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846428057] [2022-07-22 17:33:03,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:03,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:03,287 INFO L87 Difference]: Start difference. First operand 3388 states and 5718 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) [2022-07-22 17:33:04,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:04,253 INFO L93 Difference]: Finished difference Result 8281 states and 14271 transitions. [2022-07-22 17:33:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:04,253 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 [2022-07-22 17:33:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:04,276 INFO L225 Difference]: With dead ends: 8281 [2022-07-22 17:33:04,276 INFO L226 Difference]: Without dead ends: 5630 [2022-07-22 17:33:04,285 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:04,285 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 953 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:04,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1165 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2022-07-22 17:33:04,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5529. [2022-07-22 17:33:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 4553 states have (on average 1.6022402811333187) internal successors, (7295), 4560 states have internal predecessors, (7295), 954 states have call successors, (954), 17 states have call predecessors, (954), 21 states have return successors, (1071), 953 states have call predecessors, (1071), 953 states have call successors, (1071) [2022-07-22 17:33:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 9320 transitions. [2022-07-22 17:33:04,585 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 9320 transitions. Word has length 113 [2022-07-22 17:33:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:04,585 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 9320 transitions. [2022-07-22 17:33:04,585 INFO L496 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) [2022-07-22 17:33:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 9320 transitions. [2022-07-22 17:33:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:33:04,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:04,594 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:04,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:33:04,594 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:04,595 INFO L85 PathProgramCache]: Analyzing trace with hash -38691747, now seen corresponding path program 1 times [2022-07-22 17:33:04,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:04,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657380651] [2022-07-22 17:33:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:04,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:33:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:33:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:33:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:33:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:33:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:04,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:04,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657380651] [2022-07-22 17:33:04,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657380651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:04,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:04,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373476472] [2022-07-22 17:33:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:04,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:04,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:04,669 INFO L87 Difference]: Start difference. First operand 5529 states and 9320 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) [2022-07-22 17:33:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:05,828 INFO L93 Difference]: Finished difference Result 13703 states and 23572 transitions. [2022-07-22 17:33:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:05,828 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 [2022-07-22 17:33:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:05,864 INFO L225 Difference]: With dead ends: 13703 [2022-07-22 17:33:05,864 INFO L226 Difference]: Without dead ends: 9313 [2022-07-22 17:33:05,876 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:05,877 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 951 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:05,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1156 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:05,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2022-07-22 17:33:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 9212. [2022-07-22 17:33:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9212 states, 7630 states have (on average 1.599213630406291) internal successors, (12202), 7637 states have internal predecessors, (12202), 1560 states have call successors, (1560), 17 states have call predecessors, (1560), 21 states have return successors, (1755), 1559 states have call predecessors, (1755), 1559 states have call successors, (1755) [2022-07-22 17:33:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9212 states to 9212 states and 15517 transitions. [2022-07-22 17:33:06,329 INFO L78 Accepts]: Start accepts. Automaton has 9212 states and 15517 transitions. Word has length 114 [2022-07-22 17:33:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:06,329 INFO L495 AbstractCegarLoop]: Abstraction has 9212 states and 15517 transitions. [2022-07-22 17:33:06,330 INFO L496 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) [2022-07-22 17:33:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 9212 states and 15517 transitions. [2022-07-22 17:33:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:33:06,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:06,379 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:06,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:33:06,379 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1889380491, now seen corresponding path program 1 times [2022-07-22 17:33:06,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:06,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745467979] [2022-07-22 17:33:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:06,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:33:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:33:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:33:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:33:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:33:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:06,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745467979] [2022-07-22 17:33:06,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745467979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:06,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:06,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600938903] [2022-07-22 17:33:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:06,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:06,450 INFO L87 Difference]: Start difference. First operand 9212 states and 15517 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) [2022-07-22 17:33:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:07,919 INFO L93 Difference]: Finished difference Result 23887 states and 41013 transitions. [2022-07-22 17:33:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:07,920 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 [2022-07-22 17:33:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:07,968 INFO L225 Difference]: With dead ends: 23887 [2022-07-22 17:33:07,968 INFO L226 Difference]: Without dead ends: 16266 [2022-07-22 17:33:07,986 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:07,987 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 949 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:07,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1175 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16266 states. [2022-07-22 17:33:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16266 to 16165. [2022-07-22 17:33:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16165 states, 13380 states have (on average 1.5898355754857998) internal successors, (21272), 13387 states have internal predecessors, (21272), 2763 states have call successors, (2763), 17 states have call predecessors, (2763), 21 states have return successors, (3102), 2762 states have call predecessors, (3102), 2762 states have call successors, (3102) [2022-07-22 17:33:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16165 states to 16165 states and 27137 transitions. [2022-07-22 17:33:08,802 INFO L78 Accepts]: Start accepts. Automaton has 16165 states and 27137 transitions. Word has length 115 [2022-07-22 17:33:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:08,802 INFO L495 AbstractCegarLoop]: Abstraction has 16165 states and 27137 transitions. [2022-07-22 17:33:08,802 INFO L496 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) [2022-07-22 17:33:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 16165 states and 27137 transitions. [2022-07-22 17:33:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:33:08,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:08,817 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:08,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:33:08,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:08,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash -550230466, now seen corresponding path program 1 times [2022-07-22 17:33:08,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:08,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486450792] [2022-07-22 17:33:08,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:08,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:33:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:33:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:33:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:33:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:33:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:08,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486450792] [2022-07-22 17:33:08,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486450792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:08,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:08,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:08,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721462428] [2022-07-22 17:33:08,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:08,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:08,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:08,888 INFO L87 Difference]: Start difference. First operand 16165 states and 27137 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) [2022-07-22 17:33:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:10,927 INFO L93 Difference]: Finished difference Result 42853 states and 73410 transitions. [2022-07-22 17:33:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:10,928 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 [2022-07-22 17:33:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:11,019 INFO L225 Difference]: With dead ends: 42853 [2022-07-22 17:33:11,020 INFO L226 Difference]: Without dead ends: 28921 [2022-07-22 17:33:11,050 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:11,050 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 947 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:11,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1131 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28921 states. [2022-07-22 17:33:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28921 to 28820. [2022-07-22 17:33:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28820 states, 23996 states have (on average 1.585222537089515) internal successors, (38039), 24003 states have internal predecessors, (38039), 4802 states have call successors, (4802), 17 states have call predecessors, (4802), 21 states have return successors, (5415), 4801 states have call predecessors, (5415), 4801 states have call successors, (5415) [2022-07-22 17:33:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28820 states to 28820 states and 48256 transitions. [2022-07-22 17:33:12,432 INFO L78 Accepts]: Start accepts. Automaton has 28820 states and 48256 transitions. Word has length 116 [2022-07-22 17:33:12,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:12,432 INFO L495 AbstractCegarLoop]: Abstraction has 28820 states and 48256 transitions. [2022-07-22 17:33:12,432 INFO L496 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) [2022-07-22 17:33:12,432 INFO L276 IsEmpty]: Start isEmpty. Operand 28820 states and 48256 transitions. [2022-07-22 17:33:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 17:33:12,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:12,448 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:12,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:33:12,448 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:12,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash 538828877, now seen corresponding path program 1 times [2022-07-22 17:33:12,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:12,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438564966] [2022-07-22 17:33:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:33:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:33:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:33:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:33:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:33:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:12,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:12,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438564966] [2022-07-22 17:33:12,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438564966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:12,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:12,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833913613] [2022-07-22 17:33:12,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:12,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:12,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:12,531 INFO L87 Difference]: Start difference. First operand 28820 states and 48256 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) [2022-07-22 17:33:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:15,628 INFO L93 Difference]: Finished difference Result 78615 states and 133774 transitions. [2022-07-22 17:33:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:15,628 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 [2022-07-22 17:33:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:15,959 INFO L225 Difference]: With dead ends: 78615 [2022-07-22 17:33:15,959 INFO L226 Difference]: Without dead ends: 52800 [2022-07-22 17:33:16,011 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:16,011 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 945 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:16,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1129 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52800 states. [2022-07-22 17:33:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52800 to 52699. [2022-07-22 17:33:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52699 states, 44160 states have (on average 1.579302536231884) internal successors, (69742), 44167 states have internal predecessors, (69742), 8517 states have call successors, (8517), 17 states have call predecessors, (8517), 21 states have return successors, (9662), 8516 states have call predecessors, (9662), 8516 states have call successors, (9662) [2022-07-22 17:33:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52699 states to 52699 states and 87921 transitions. [2022-07-22 17:33:18,636 INFO L78 Accepts]: Start accepts. Automaton has 52699 states and 87921 transitions. Word has length 117 [2022-07-22 17:33:18,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:18,636 INFO L495 AbstractCegarLoop]: Abstraction has 52699 states and 87921 transitions. [2022-07-22 17:33:18,636 INFO L496 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) [2022-07-22 17:33:18,636 INFO L276 IsEmpty]: Start isEmpty. Operand 52699 states and 87921 transitions. [2022-07-22 17:33:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 17:33:18,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:18,653 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:18,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:33:18,654 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash 736585342, now seen corresponding path program 1 times [2022-07-22 17:33:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:18,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348940452] [2022-07-22 17:33:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:33:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:33:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:33:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:33:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:33:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:18,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348940452] [2022-07-22 17:33:18,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348940452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:18,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:18,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:33:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799978399] [2022-07-22 17:33:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:33:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:33:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:33:18,727 INFO L87 Difference]: Start difference. First operand 52699 states and 87921 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) [2022-07-22 17:33:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:23,221 INFO L93 Difference]: Finished difference Result 98386 states and 167704 transitions. [2022-07-22 17:33:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:33:23,222 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 [2022-07-22 17:33:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:23,586 INFO L225 Difference]: With dead ends: 98386 [2022-07-22 17:33:23,586 INFO L226 Difference]: Without dead ends: 98259 [2022-07-22 17:33:23,636 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:33:23,636 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 943 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:23,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1131 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:33:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98259 states. [2022-07-22 17:33:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98259 to 98158. [2022-07-22 17:33:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98158 states, 82820 states have (on average 1.5719512195121952) internal successors, (130189), 82827 states have internal predecessors, (130189), 15316 states have call successors, (15316), 17 states have call predecessors, (15316), 21 states have return successors, (17507), 15315 states have call predecessors, (17507), 15315 states have call successors, (17507) [2022-07-22 17:33:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98158 states to 98158 states and 163012 transitions. [2022-07-22 17:33:28,884 INFO L78 Accepts]: Start accepts. Automaton has 98158 states and 163012 transitions. Word has length 118 [2022-07-22 17:33:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:28,884 INFO L495 AbstractCegarLoop]: Abstraction has 98158 states and 163012 transitions. [2022-07-22 17:33:28,884 INFO L496 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) [2022-07-22 17:33:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 98158 states and 163012 transitions. [2022-07-22 17:33:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-22 17:33:28,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:28,900 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:33:28,900 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash 519306732, now seen corresponding path program 1 times [2022-07-22 17:33:28,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:28,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145178852] [2022-07-22 17:33:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:28,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:28,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:28,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:33:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:33:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:33:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:33:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:33:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:29,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:29,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145178852] [2022-07-22 17:33:29,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145178852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:29,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:29,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 17:33:29,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28357985] [2022-07-22 17:33:29,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:29,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 17:33:29,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 17:33:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:33:29,058 INFO L87 Difference]: Start difference. First operand 98158 states and 163012 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) [2022-07-22 17:33:41,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:33:41,063 INFO L93 Difference]: Finished difference Result 196237 states and 337801 transitions. [2022-07-22 17:33:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-22 17:33:41,063 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 [2022-07-22 17:33:41,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:33:41,749 INFO L225 Difference]: With dead ends: 196237 [2022-07-22 17:33:41,750 INFO L226 Difference]: Without dead ends: 196116 [2022-07-22 17:33:41,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2022-07-22 17:33:41,831 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 4362 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 6792 mSolverCounterSat, 1872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 8664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1872 IncrementalHoareTripleChecker+Valid, 6792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:33:41,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 2989 Invalid, 8664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1872 Valid, 6792 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-22 17:33:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196116 states. [2022-07-22 17:33:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196116 to 195457. [2022-07-22 17:33:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195457 states, 164987 states have (on average 1.5728330110857218) internal successors, (259497), 164890 states have internal predecessors, (259497), 30417 states have call successors, (30417), 44 states have call predecessors, (30417), 52 states have return successors, (38073), 30528 states have call predecessors, (38073), 30414 states have call successors, (38073) [2022-07-22 17:33:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195457 states to 195457 states and 327987 transitions. [2022-07-22 17:33:52,722 INFO L78 Accepts]: Start accepts. Automaton has 195457 states and 327987 transitions. Word has length 119 [2022-07-22 17:33:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:33:52,722 INFO L495 AbstractCegarLoop]: Abstraction has 195457 states and 327987 transitions. [2022-07-22 17:33:52,722 INFO L496 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) [2022-07-22 17:33:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 195457 states and 327987 transitions. [2022-07-22 17:33:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 17:33:52,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:33:52,748 INFO L195 NwaCegarLoop]: 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] [2022-07-22 17:33:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:33:52,749 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:33:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:33:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1953120415, now seen corresponding path program 1 times [2022-07-22 17:33:52,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:33:52,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215790116] [2022-07-22 17:33:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:33:52,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:33:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:33:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:33:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:52,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:33:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:33:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:52,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:33:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:33:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:52,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:33:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:33:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:53,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:33:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:33:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:33:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:33:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:33:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:33:53,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215790116] [2022-07-22 17:33:53,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215790116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:33:53,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:33:53,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:33:53,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659145936] [2022-07-22 17:33:53,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:33:53,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:33:53,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:33:53,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:33:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:33:53,144 INFO L87 Difference]: Start difference. First operand 195457 states and 327987 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)