./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec0_product24.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 b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:00:44,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:00:44,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:00:44,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:00:44,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:00:44,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:00:44,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:00:44,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:00:44,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:00:44,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:00:44,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:00:44,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:00:44,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:00:44,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:00:44,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:00:44,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:00:44,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:00:44,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:00:44,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:00:44,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:00:44,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:00:44,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:00:44,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:00:44,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:00:44,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:00:44,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:00:44,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:00:44,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:00:44,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:00:44,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:00:44,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:00:44,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:00:44,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:00:44,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:00:44,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:00:44,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:00:44,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:00:44,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:00:44,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:00:44,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:00:44,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:00:44,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:00:44,740 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:00:44,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:00:44,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:00:44,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:00:44,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:00:44,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:00:44,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:00:44,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:00:44,743 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:00:44,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:00:44,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:00:44,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:00:44,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:00:44,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:00:44,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:00:44,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:00:44,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:00:44,745 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:00:44,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:00:44,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:00:44,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:00:44,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:00:44,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:00:44,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:00:44,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:00:44,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:00:44,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:00:44,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:00:44,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:00:44,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:00:44,748 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:00:44,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:00:44,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:00:44,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:00:44,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 [2021-12-21 13:00:44,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:00:45,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:00:45,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:00:45,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:00:45,020 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:00:45,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2021-12-21 13:00:45,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30f3ab6a/94b3ce84bc314fffa3d8776ae90ebc50/FLAG658169f92 [2021-12-21 13:00:45,534 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:00:45,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2021-12-21 13:00:45,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30f3ab6a/94b3ce84bc314fffa3d8776ae90ebc50/FLAG658169f92 [2021-12-21 13:00:45,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30f3ab6a/94b3ce84bc314fffa3d8776ae90ebc50 [2021-12-21 13:00:45,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:00:45,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:00:45,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:00:45,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:00:45,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:00:45,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:00:45" (1/1) ... [2021-12-21 13:00:45,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1edb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:45, skipping insertion in model container [2021-12-21 13:00:45,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:00:45" (1/1) ... [2021-12-21 13:00:45,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:00:45,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:00:46,057 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_spec0_product24.cil.c[25283,25296] [2021-12-21 13:00:46,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:00:46,178 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:00:46,230 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_spec0_product24.cil.c[25283,25296] [2021-12-21 13:00:46,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:00:46,296 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:00:46,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46 WrapperNode [2021-12-21 13:00:46,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:00:46,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:00:46,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:00:46,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:00:46,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,386 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1046 [2021-12-21 13:00:46,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:00:46,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:00:46,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:00:46,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:00:46,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:00:46,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:00:46,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:00:46,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:00:46,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (1/1) ... [2021-12-21 13:00:46,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:00:46,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:46,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:00:46,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:00:46,547 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:00:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:00:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:00:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:00:46,551 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-21 13:00:46,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-21 13:00:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:00:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:00:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-21 13:00:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-21 13:00:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:00:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:00:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:00:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-21 13:00:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-21 13:00:46,553 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-21 13:00:46,553 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-21 13:00:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:00:46,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:00:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:00:46,554 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-21 13:00:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-21 13:00:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:00:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:00:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:00:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:00:46,555 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:00:46,555 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:00:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:00:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:00:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:00:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:00:46,556 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-21 13:00:46,556 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-21 13:00:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:00:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:00:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:00:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:00:46,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:00:46,799 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:00:46,801 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:00:47,430 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:00:47,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:00:47,440 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:00:47,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:00:47 BoogieIcfgContainer [2021-12-21 13:00:47,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:00:47,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:00:47,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:00:47,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:00:47,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:00:45" (1/3) ... [2021-12-21 13:00:47,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c78cb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:00:47, skipping insertion in model container [2021-12-21 13:00:47,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:00:46" (2/3) ... [2021-12-21 13:00:47,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c78cb5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:00:47, skipping insertion in model container [2021-12-21 13:00:47,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:00:47" (3/3) ... [2021-12-21 13:00:47,452 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product24.cil.c [2021-12-21 13:00:47,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:00:47,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:00:47,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:00:47,509 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:00:47,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:00:47,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-21 13:00:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 13:00:47,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:47,545 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:47,546 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:47,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1529654468, now seen corresponding path program 1 times [2021-12-21 13:00:47,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:47,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878770600] [2021-12-21 13:00:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:47,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 13:00:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 13:00:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:00:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:00:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:00:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:00:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:00:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 13:00:48,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:48,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878770600] [2021-12-21 13:00:48,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878770600] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401226973] [2021-12-21 13:00:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:48,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:48,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:48,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:48,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:00:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:48,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 13:00:48,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 13:00:48,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:48,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401226973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:48,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:48,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-21 13:00:48,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282457020] [2021-12-21 13:00:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:48,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:00:48,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:48,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:00:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:48,844 INFO L87 Difference]: Start difference. First operand has 320 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 257 states have internal predecessors, (391), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:48,924 INFO L93 Difference]: Finished difference Result 481 states and 712 transitions. [2021-12-21 13:00:48,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:00:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2021-12-21 13:00:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:48,943 INFO L225 Difference]: With dead ends: 481 [2021-12-21 13:00:48,944 INFO L226 Difference]: Without dead ends: 313 [2021-12-21 13:00:48,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:48,952 INFO L933 BasicCegarLoop]: 479 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, 479 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:48,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-21 13:00:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-21 13:00:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 249 states have (on average 1.5261044176706828) internal successors, (380), 250 states have internal predecessors, (380), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-21 13:00:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2021-12-21 13:00:49,053 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 108 [2021-12-21 13:00:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:49,055 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2021-12-21 13:00:49,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2021-12-21 13:00:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 13:00:49,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:49,064 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:49,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:49,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-21 13:00:49,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash -482448083, now seen corresponding path program 1 times [2021-12-21 13:00:49,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:49,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691332703] [2021-12-21 13:00:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:49,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 13:00:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 13:00:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:00:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:00:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:00:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:00:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:00:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 13:00:49,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:49,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691332703] [2021-12-21 13:00:49,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691332703] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:49,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28397371] [2021-12-21 13:00:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:49,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:49,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:49,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:49,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:00:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:49,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:00:49,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 13:00:50,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:50,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28397371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:50,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:50,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:00:50,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738819777] [2021-12-21 13:00:50,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:50,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:00:50,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:00:50,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:50,060 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:50,123 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2021-12-21 13:00:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:00:50,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2021-12-21 13:00:50,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:50,130 INFO L225 Difference]: With dead ends: 471 [2021-12-21 13:00:50,131 INFO L226 Difference]: Without dead ends: 316 [2021-12-21 13:00:50,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:50,137 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:50,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-21 13:00:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-12-21 13:00:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 252 states have internal predecessors, (382), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-21 13:00:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2021-12-21 13:00:50,177 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 109 [2021-12-21 13:00:50,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:50,179 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2021-12-21 13:00:50,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2021-12-21 13:00:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 13:00:50,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:50,186 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:50,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 13:00:50,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-21 13:00:50,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:50,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:50,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1960014467, now seen corresponding path program 1 times [2021-12-21 13:00:50,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:50,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675673884] [2021-12-21 13:00:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:50,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 13:00:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:00:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:00:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:00:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:00:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:00:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:00:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,560 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:50,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:50,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675673884] [2021-12-21 13:00:50,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675673884] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:50,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147011774] [2021-12-21 13:00:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:50,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:50,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:50,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:50,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:00:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:50,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:00:50,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 13:00:51,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:51,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147011774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:51,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:51,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-21 13:00:51,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274495444] [2021-12-21 13:00:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:51,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:00:51,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:00:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:51,047 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:51,074 INFO L93 Difference]: Finished difference Result 665 states and 1013 transitions. [2021-12-21 13:00:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:00:51,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2021-12-21 13:00:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:51,078 INFO L225 Difference]: With dead ends: 665 [2021-12-21 13:00:51,078 INFO L226 Difference]: Without dead ends: 377 [2021-12-21 13:00:51,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:00:51,080 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 115 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:51,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 915 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-21 13:00:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2021-12-21 13:00:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 294 states have (on average 1.5374149659863945) internal successors, (452), 295 states have internal predecessors, (452), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-12-21 13:00:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 565 transitions. [2021-12-21 13:00:51,099 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 565 transitions. Word has length 118 [2021-12-21 13:00:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:51,100 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 565 transitions. [2021-12-21 13:00:51,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:00:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 565 transitions. [2021-12-21 13:00:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-21 13:00:51,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:51,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:51,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:51,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:51,316 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1907956032, now seen corresponding path program 1 times [2021-12-21 13:00:51,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:51,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830125008] [2021-12-21 13:00:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:51,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:00:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:00:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 13:00:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 13:00:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:00:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:00:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:00:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:00:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:00:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:00:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:51,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:51,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830125008] [2021-12-21 13:00:51,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830125008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:51,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777964236] [2021-12-21 13:00:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:51,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:51,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:51,442 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:51,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 13:00:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:51,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:00:51,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:00:51,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:51,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777964236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:51,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:51,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-21 13:00:51,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280319337] [2021-12-21 13:00:51,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:51,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:00:51,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:00:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:51,907 INFO L87 Difference]: Start difference. First operand 369 states and 565 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:51,972 INFO L93 Difference]: Finished difference Result 729 states and 1120 transitions. [2021-12-21 13:00:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:00:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2021-12-21 13:00:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:51,977 INFO L225 Difference]: With dead ends: 729 [2021-12-21 13:00:51,977 INFO L226 Difference]: Without dead ends: 371 [2021-12-21 13:00:51,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:00:51,979 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 133 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:51,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1696 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-21 13:00:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-12-21 13:00:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 295 states have (on average 1.535593220338983) internal successors, (453), 297 states have internal predecessors, (453), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2021-12-21 13:00:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 568 transitions. [2021-12-21 13:00:52,011 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 568 transitions. Word has length 119 [2021-12-21 13:00:52,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:52,012 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 568 transitions. [2021-12-21 13:00:52,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:52,012 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 568 transitions. [2021-12-21 13:00:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-21 13:00:52,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:52,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:52,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:52,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:52,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1921687363, now seen corresponding path program 1 times [2021-12-21 13:00:52,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:52,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670109146] [2021-12-21 13:00:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:52,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 13:00:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 13:00:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:00:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:00:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:00:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 13:00:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:00:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:00:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:00:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 13:00:52,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:52,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670109146] [2021-12-21 13:00:52,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670109146] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:00:52,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717258646] [2021-12-21 13:00:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:52,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:52,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:00:52,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:00:52,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 13:00:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:52,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 13:00:52,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:00:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:00:52,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:00:52,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717258646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:52,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:00:52,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 13:00:52,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184055452] [2021-12-21 13:00:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:52,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:00:52,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:00:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:00:52,889 INFO L87 Difference]: Start difference. First operand 371 states and 568 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:52,956 INFO L93 Difference]: Finished difference Result 731 states and 1125 transitions. [2021-12-21 13:00:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:00:52,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2021-12-21 13:00:52,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:52,960 INFO L225 Difference]: With dead ends: 731 [2021-12-21 13:00:52,960 INFO L226 Difference]: Without dead ends: 373 [2021-12-21 13:00:52,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:00:52,963 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 132 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:52,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:00:52,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-12-21 13:00:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-12-21 13:00:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-21 13:00:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 574 transitions. [2021-12-21 13:00:52,989 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 574 transitions. Word has length 120 [2021-12-21 13:00:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:52,991 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 574 transitions. [2021-12-21 13:00:52,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 574 transitions. [2021-12-21 13:00:52,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-21 13:00:52,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:52,994 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:53,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 13:00:53,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:00:53,208 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash 417807318, now seen corresponding path program 1 times [2021-12-21 13:00:53,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:53,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525433860] [2021-12-21 13:00:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:53,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:00:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 13:00:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 13:00:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:00:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 13:00:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:00:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:00:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:00:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:53,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:53,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525433860] [2021-12-21 13:00:53,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525433860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:53,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:53,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:00:53,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213823916] [2021-12-21 13:00:53,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:53,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:00:53,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:00:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:53,349 INFO L87 Difference]: Start difference. First operand 373 states and 574 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:54,829 INFO L93 Difference]: Finished difference Result 920 states and 1423 transitions. [2021-12-21 13:00:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:00:54,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2021-12-21 13:00:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:54,834 INFO L225 Difference]: With dead ends: 920 [2021-12-21 13:00:54,834 INFO L226 Difference]: Without dead ends: 570 [2021-12-21 13:00:54,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:00:54,836 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1185 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:54,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 1697 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:00:54,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-12-21 13:00:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 373. [2021-12-21 13:00:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.5337837837837838) internal successors, (454), 299 states have internal predecessors, (454), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2021-12-21 13:00:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 573 transitions. [2021-12-21 13:00:54,873 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 573 transitions. Word has length 121 [2021-12-21 13:00:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:54,874 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 573 transitions. [2021-12-21 13:00:54,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 573 transitions. [2021-12-21 13:00:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-21 13:00:54,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:54,877 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:54,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:00:54,877 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash -672973775, now seen corresponding path program 2 times [2021-12-21 13:00:54,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:54,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138513003] [2021-12-21 13:00:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:54,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 13:00:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:00:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:00:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:00:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:00:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:00:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:00:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:00:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:54,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:54,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138513003] [2021-12-21 13:00:54,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138513003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:54,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:54,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:00:54,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061760542] [2021-12-21 13:00:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:54,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:00:54,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:00:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:54,997 INFO L87 Difference]: Start difference. First operand 373 states and 573 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:56,616 INFO L93 Difference]: Finished difference Result 922 states and 1426 transitions. [2021-12-21 13:00:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:00:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2021-12-21 13:00:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:56,620 INFO L225 Difference]: With dead ends: 922 [2021-12-21 13:00:56,620 INFO L226 Difference]: Without dead ends: 572 [2021-12-21 13:00:56,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:00:56,622 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1200 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:56,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 1676 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:00:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-12-21 13:00:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2021-12-21 13:00:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-21 13:00:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2021-12-21 13:00:56,648 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 122 [2021-12-21 13:00:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:56,648 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2021-12-21 13:00:56,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2021-12-21 13:00:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 13:00:56,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:56,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:56,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:00:56,651 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash -31932419, now seen corresponding path program 1 times [2021-12-21 13:00:56,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:56,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633401775] [2021-12-21 13:00:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:56,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:00:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:00:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:00:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:00:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:00:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:00:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:00:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 13:00:56,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:56,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633401775] [2021-12-21 13:00:56,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633401775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:56,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:56,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 13:00:56,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822732573] [2021-12-21 13:00:56,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:56,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:00:56,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:00:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:00:56,772 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:00:58,354 INFO L93 Difference]: Finished difference Result 922 states and 1425 transitions. [2021-12-21 13:00:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 13:00:58,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2021-12-21 13:00:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:00:58,357 INFO L225 Difference]: With dead ends: 922 [2021-12-21 13:00:58,358 INFO L226 Difference]: Without dead ends: 572 [2021-12-21 13:00:58,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-21 13:00:58,359 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1208 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:00:58,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 1667 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:00:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-12-21 13:00:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2021-12-21 13:00:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-21 13:00:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2021-12-21 13:00:58,384 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 123 [2021-12-21 13:00:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:00:58,385 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2021-12-21 13:00:58,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-21 13:00:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2021-12-21 13:00:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 13:00:58,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:00:58,387 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:00:58,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:00:58,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:00:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:00:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash 554343803, now seen corresponding path program 1 times [2021-12-21 13:00:58,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:00:58,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521022340] [2021-12-21 13:00:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:00:58,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:00:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:00:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:00:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:00:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:00:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:00:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:00:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 13:00:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:00:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 13:00:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:00:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:00:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:00:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:00:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:00:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 13:00:58,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:00:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521022340] [2021-12-21 13:00:58,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521022340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:00:58,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:00:58,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:00:58,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770098169] [2021-12-21 13:00:58,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:00:58,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:00:58,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:00:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:00:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:00:58,513 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:01:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:00,644 INFO L93 Difference]: Finished difference Result 920 states and 1420 transitions. [2021-12-21 13:01:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:01:00,644 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2021-12-21 13:01:00,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:00,648 INFO L225 Difference]: With dead ends: 920 [2021-12-21 13:01:00,648 INFO L226 Difference]: Without dead ends: 572 [2021-12-21 13:01:00,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:01:00,652 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1304 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 3349 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 3831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 3349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:00,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 2181 Invalid, 3831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 3349 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 13:01:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-12-21 13:01:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2021-12-21 13:01:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 297 states have (on average 1.531986531986532) internal successors, (455), 301 states have internal predecessors, (455), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-21 13:01:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2021-12-21 13:01:00,680 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 123 [2021-12-21 13:01:00,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:00,681 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2021-12-21 13:01:00,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:01:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2021-12-21 13:01:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 13:01:00,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:00,685 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:00,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:01:00,685 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1074969378, now seen corresponding path program 2 times [2021-12-21 13:01:00,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:00,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198498315] [2021-12-21 13:01:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:00,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:01:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:01:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 13:01:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:01:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:01:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:01:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:01:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 13:01:00,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:00,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198498315] [2021-12-21 13:01:00,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198498315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:00,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:00,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:01:00,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071478356] [2021-12-21 13:01:00,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:00,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:01:00,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:01:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:01:00,827 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:01:02,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:02,962 INFO L93 Difference]: Finished difference Result 922 states and 1426 transitions. [2021-12-21 13:01:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:01:02,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2021-12-21 13:01:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:02,967 INFO L225 Difference]: With dead ends: 922 [2021-12-21 13:01:02,967 INFO L226 Difference]: Without dead ends: 574 [2021-12-21 13:01:02,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 13:01:02,969 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1300 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:02,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1300 Valid, 2195 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 13:01:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-12-21 13:01:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 377. [2021-12-21 13:01:02,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 298 states have (on average 1.5302013422818792) internal successors, (456), 303 states have internal predecessors, (456), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2021-12-21 13:01:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 581 transitions. [2021-12-21 13:01:02,997 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 581 transitions. Word has length 124 [2021-12-21 13:01:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:02,997 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 581 transitions. [2021-12-21 13:01:02,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 13:01:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 581 transitions. [2021-12-21 13:01:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 13:01:03,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:03,001 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:03,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:01:03,002 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:03,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1606301664, now seen corresponding path program 1 times [2021-12-21 13:01:03,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:03,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983541969] [2021-12-21 13:01:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:03,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 13:01:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:01:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 13:01:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:01:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:01:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:01:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:01:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:01:03,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:03,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983541969] [2021-12-21 13:01:03,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983541969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:01:03,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168719174] [2021-12-21 13:01:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:03,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:01:03,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:01:03,152 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:01:03,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 13:01:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:03,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:01:03,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:01:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:03,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:01:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:03,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168719174] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:01:03,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:01:03,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-21 13:01:03,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071779325] [2021-12-21 13:01:03,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:01:03,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 13:01:03,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 13:01:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:01:03,819 INFO L87 Difference]: Start difference. First operand 377 states and 581 transitions. Second operand has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-21 13:01:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:06,896 INFO L93 Difference]: Finished difference Result 1651 states and 2734 transitions. [2021-12-21 13:01:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 13:01:06,897 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 125 [2021-12-21 13:01:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:06,905 INFO L225 Difference]: With dead ends: 1651 [2021-12-21 13:01:06,905 INFO L226 Difference]: Without dead ends: 1305 [2021-12-21 13:01:06,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-21 13:01:06,911 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 3391 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 4641 mSolverCounterSat, 1261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3393 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 5902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1261 IncrementalHoareTripleChecker+Valid, 4641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:06,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3393 Valid, 3554 Invalid, 5902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1261 Valid, 4641 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 13:01:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2021-12-21 13:01:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 730. [2021-12-21 13:01:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 587 states have (on average 1.5792163543441227) internal successors, (927), 592 states have internal predecessors, (927), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2021-12-21 13:01:06,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1190 transitions. [2021-12-21 13:01:06,972 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1190 transitions. Word has length 125 [2021-12-21 13:01:06,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:06,973 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1190 transitions. [2021-12-21 13:01:06,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-21 13:01:06,974 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1190 transitions. [2021-12-21 13:01:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 13:01:06,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:06,978 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:06,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-21 13:01:07,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:01:07,192 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash 199909962, now seen corresponding path program 1 times [2021-12-21 13:01:07,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:07,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396122025] [2021-12-21 13:01:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:07,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 13:01:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:01:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:01:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:01:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:01:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:01:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:01:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:07,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:07,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396122025] [2021-12-21 13:01:07,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396122025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:07,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:07,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:07,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494059283] [2021-12-21 13:01:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:07,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:07,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:07,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:07,301 INFO L87 Difference]: Start difference. First operand 730 states and 1190 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:08,510 INFO L93 Difference]: Finished difference Result 1912 states and 3177 transitions. [2021-12-21 13:01:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-12-21 13:01:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:08,518 INFO L225 Difference]: With dead ends: 1912 [2021-12-21 13:01:08,518 INFO L226 Difference]: Without dead ends: 1260 [2021-12-21 13:01:08,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:08,521 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 1161 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:08,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1443 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:01:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-12-21 13:01:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1055. [2021-12-21 13:01:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 848 states have (on average 1.5943396226415094) internal successors, (1352), 853 states have internal predecessors, (1352), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2021-12-21 13:01:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1753 transitions. [2021-12-21 13:01:08,595 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1753 transitions. Word has length 128 [2021-12-21 13:01:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:08,595 INFO L470 AbstractCegarLoop]: Abstraction has 1055 states and 1753 transitions. [2021-12-21 13:01:08,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1753 transitions. [2021-12-21 13:01:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-21 13:01:08,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:08,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:08,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:01:08,602 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash -409934556, now seen corresponding path program 1 times [2021-12-21 13:01:08,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:08,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342056498] [2021-12-21 13:01:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:08,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 13:01:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:01:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:01:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:01:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:01:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:01:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:01:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:08,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:08,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342056498] [2021-12-21 13:01:08,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342056498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:08,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:08,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:08,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489142959] [2021-12-21 13:01:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:08,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:08,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:08,706 INFO L87 Difference]: Start difference. First operand 1055 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:09,998 INFO L93 Difference]: Finished difference Result 2717 states and 4561 transitions. [2021-12-21 13:01:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:09,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-12-21 13:01:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:10,008 INFO L225 Difference]: With dead ends: 2717 [2021-12-21 13:01:10,008 INFO L226 Difference]: Without dead ends: 1793 [2021-12-21 13:01:10,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:10,013 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 1177 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:10,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 1386 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:01:10,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-12-21 13:01:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1588. [2021-12-21 13:01:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1286 states have (on average 1.6003110419906688) internal successors, (2058), 1291 states have internal predecessors, (2058), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2021-12-21 13:01:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2649 transitions. [2021-12-21 13:01:10,139 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2649 transitions. Word has length 129 [2021-12-21 13:01:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:10,139 INFO L470 AbstractCegarLoop]: Abstraction has 1588 states and 2649 transitions. [2021-12-21 13:01:10,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2649 transitions. [2021-12-21 13:01:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 13:01:10,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:10,171 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:10,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:01:10,172 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1950710404, now seen corresponding path program 1 times [2021-12-21 13:01:10,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:10,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553273675] [2021-12-21 13:01:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:10,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:01:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:01:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 13:01:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:01:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:01:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:01:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:01:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:10,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:10,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553273675] [2021-12-21 13:01:10,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553273675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:10,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:10,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:10,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057076416] [2021-12-21 13:01:10,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:10,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:10,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:10,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:10,275 INFO L87 Difference]: Start difference. First operand 1588 states and 2649 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:11,506 INFO L93 Difference]: Finished difference Result 3924 states and 6647 transitions. [2021-12-21 13:01:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-12-21 13:01:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:11,519 INFO L225 Difference]: With dead ends: 3924 [2021-12-21 13:01:11,520 INFO L226 Difference]: Without dead ends: 2602 [2021-12-21 13:01:11,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:11,524 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 1169 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:11,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 1388 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:01:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-12-21 13:01:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2397. [2021-12-21 13:01:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1972 states have (on average 1.604969574036511) internal successors, (3165), 1977 states have internal predecessors, (3165), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2021-12-21 13:01:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 4018 transitions. [2021-12-21 13:01:11,702 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 4018 transitions. Word has length 130 [2021-12-21 13:01:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:11,702 INFO L470 AbstractCegarLoop]: Abstraction has 2397 states and 4018 transitions. [2021-12-21 13:01:11,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 4018 transitions. [2021-12-21 13:01:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 13:01:11,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:11,715 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:11,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:01:11,715 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:11,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2048055011, now seen corresponding path program 1 times [2021-12-21 13:01:11,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:11,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516284856] [2021-12-21 13:01:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:11,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 13:01:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:01:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 13:01:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:01:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:01:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:01:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:01:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:11,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:11,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516284856] [2021-12-21 13:01:11,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516284856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:11,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:11,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:11,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887866553] [2021-12-21 13:01:11,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:11,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:11,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:11,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:11,819 INFO L87 Difference]: Start difference. First operand 2397 states and 4018 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:13,138 INFO L93 Difference]: Finished difference Result 5808 states and 9907 transitions. [2021-12-21 13:01:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-12-21 13:01:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:13,159 INFO L225 Difference]: With dead ends: 5808 [2021-12-21 13:01:13,160 INFO L226 Difference]: Without dead ends: 3896 [2021-12-21 13:01:13,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:13,168 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 1163 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:13,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1403 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:01:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-12-21 13:01:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3691. [2021-12-21 13:01:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 3087 states have (on average 1.6077097505668934) internal successors, (4963), 3092 states have internal predecessors, (4963), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2021-12-21 13:01:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 6200 transitions. [2021-12-21 13:01:13,446 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 6200 transitions. Word has length 131 [2021-12-21 13:01:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:13,446 INFO L470 AbstractCegarLoop]: Abstraction has 3691 states and 6200 transitions. [2021-12-21 13:01:13,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 6200 transitions. [2021-12-21 13:01:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 13:01:13,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:13,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:13,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:01:13,461 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:13,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:13,462 INFO L85 PathProgramCache]: Analyzing trace with hash 536030400, now seen corresponding path program 1 times [2021-12-21 13:01:13,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:13,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577885062] [2021-12-21 13:01:13,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:13,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 13:01:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:01:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 13:01:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 13:01:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:01:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:01:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:01:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:13,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:13,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577885062] [2021-12-21 13:01:13,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577885062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:13,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:13,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:13,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073866659] [2021-12-21 13:01:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:13,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:13,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:13,548 INFO L87 Difference]: Start difference. First operand 3691 states and 6200 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:14,961 INFO L93 Difference]: Finished difference Result 8911 states and 15271 transitions. [2021-12-21 13:01:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:14,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-12-21 13:01:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:14,991 INFO L225 Difference]: With dead ends: 8911 [2021-12-21 13:01:14,991 INFO L226 Difference]: Without dead ends: 6037 [2021-12-21 13:01:15,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:15,002 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1172 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:15,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1188 Valid, 1423 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:01:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6037 states. [2021-12-21 13:01:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6037 to 5832. [2021-12-21 13:01:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 4852 states have (on average 1.6011953833470733) internal successors, (7769), 4857 states have internal predecessors, (7769), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2021-12-21 13:01:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 9802 transitions. [2021-12-21 13:01:15,437 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 9802 transitions. Word has length 132 [2021-12-21 13:01:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:15,437 INFO L470 AbstractCegarLoop]: Abstraction has 5832 states and 9802 transitions. [2021-12-21 13:01:15,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 9802 transitions. [2021-12-21 13:01:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 13:01:15,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:15,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:15,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:01:15,459 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:15,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:15,460 INFO L85 PathProgramCache]: Analyzing trace with hash -507233377, now seen corresponding path program 1 times [2021-12-21 13:01:15,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:15,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687151975] [2021-12-21 13:01:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:15,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:01:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:01:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:01:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:01:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 13:01:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:01:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 13:01:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:15,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:15,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687151975] [2021-12-21 13:01:15,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687151975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:15,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:15,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:15,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559096649] [2021-12-21 13:01:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:15,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:15,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:15,558 INFO L87 Difference]: Start difference. First operand 5832 states and 9802 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:17,065 INFO L93 Difference]: Finished difference Result 14528 states and 24884 transitions. [2021-12-21 13:01:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:17,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-12-21 13:01:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:17,113 INFO L225 Difference]: With dead ends: 14528 [2021-12-21 13:01:17,113 INFO L226 Difference]: Without dead ends: 9915 [2021-12-21 13:01:17,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:17,171 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 1164 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:17,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 1400 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:01:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9915 states. [2021-12-21 13:01:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9915 to 9710. [2021-12-21 13:01:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9710 states, 8124 states have (on average 1.5987198424421467) internal successors, (12988), 8129 states have internal predecessors, (12988), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2021-12-21 13:01:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 16311 transitions. [2021-12-21 13:01:17,784 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 16311 transitions. Word has length 133 [2021-12-21 13:01:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:17,784 INFO L470 AbstractCegarLoop]: Abstraction has 9710 states and 16311 transitions. [2021-12-21 13:01:17,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 16311 transitions. [2021-12-21 13:01:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 13:01:17,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:17,817 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:17,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:01:17,818 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash -318072430, now seen corresponding path program 1 times [2021-12-21 13:01:17,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:17,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136746082] [2021-12-21 13:01:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:17,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 13:01:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:01:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:01:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 13:01:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:01:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:01:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:01:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:17,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:17,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136746082] [2021-12-21 13:01:17,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136746082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:17,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:17,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:17,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430950699] [2021-12-21 13:01:17,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:17,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:17,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:17,931 INFO L87 Difference]: Start difference. First operand 9710 states and 16311 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:19,775 INFO L93 Difference]: Finished difference Result 25237 states and 43165 transitions. [2021-12-21 13:01:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:19,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2021-12-21 13:01:19,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:19,847 INFO L225 Difference]: With dead ends: 25237 [2021-12-21 13:01:19,847 INFO L226 Difference]: Without dead ends: 17228 [2021-12-21 13:01:19,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:19,885 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 1149 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:19,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 1446 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 13:01:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2021-12-21 13:01:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 17023. [2021-12-21 13:01:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 14234 states have (on average 1.590136293382043) internal successors, (22634), 14239 states have internal predecessors, (22634), 2767 states have call successors, (2767), 17 states have call predecessors, (2767), 21 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2021-12-21 13:01:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 28507 transitions. [2021-12-21 13:01:21,035 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 28507 transitions. Word has length 134 [2021-12-21 13:01:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:21,035 INFO L470 AbstractCegarLoop]: Abstraction has 17023 states and 28507 transitions. [2021-12-21 13:01:21,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 28507 transitions. [2021-12-21 13:01:21,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 13:01:21,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:21,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:21,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:01:21,076 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:21,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2145052610, now seen corresponding path program 1 times [2021-12-21 13:01:21,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:21,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351170869] [2021-12-21 13:01:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:21,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 13:01:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 13:01:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 13:01:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:01:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:01:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:01:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 13:01:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:21,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:21,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351170869] [2021-12-21 13:01:21,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351170869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:21,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:21,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:21,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481820215] [2021-12-21 13:01:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:21,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:21,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:21,190 INFO L87 Difference]: Start difference. First operand 17023 states and 28507 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:23,970 INFO L93 Difference]: Finished difference Result 45213 states and 77178 transitions. [2021-12-21 13:01:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2021-12-21 13:01:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:24,106 INFO L225 Difference]: With dead ends: 45213 [2021-12-21 13:01:24,106 INFO L226 Difference]: Without dead ends: 30568 [2021-12-21 13:01:24,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:24,164 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 1159 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:24,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 1403 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:01:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30568 states. [2021-12-21 13:01:26,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30568 to 30363. [2021-12-21 13:01:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30363 states, 25535 states have (on average 1.5859408654787546) internal successors, (40497), 25540 states have internal predecessors, (40497), 4806 states have call successors, (4806), 17 states have call predecessors, (4806), 21 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2021-12-21 13:01:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30363 states to 30363 states and 50722 transitions. [2021-12-21 13:01:26,246 INFO L78 Accepts]: Start accepts. Automaton has 30363 states and 50722 transitions. Word has length 135 [2021-12-21 13:01:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:26,247 INFO L470 AbstractCegarLoop]: Abstraction has 30363 states and 50722 transitions. [2021-12-21 13:01:26,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 30363 states and 50722 transitions. [2021-12-21 13:01:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-21 13:01:26,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:26,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:26,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:01:26,286 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1901830544, now seen corresponding path program 1 times [2021-12-21 13:01:26,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:26,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596211754] [2021-12-21 13:01:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:26,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 13:01:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 13:01:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 13:01:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:01:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:01:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:01:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 13:01:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:26,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:26,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596211754] [2021-12-21 13:01:26,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596211754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:26,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:26,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:26,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076990930] [2021-12-21 13:01:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:26,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:26,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:26,582 INFO L87 Difference]: Start difference. First operand 30363 states and 50722 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:01:30,318 INFO L93 Difference]: Finished difference Result 82950 states and 140702 transitions. [2021-12-21 13:01:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:01:30,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 136 [2021-12-21 13:01:30,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:01:30,521 INFO L225 Difference]: With dead ends: 82950 [2021-12-21 13:01:30,521 INFO L226 Difference]: Without dead ends: 55777 [2021-12-21 13:01:30,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:01:30,597 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 1140 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:01:30,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1156 Valid, 1406 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 13:01:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55777 states. [2021-12-21 13:01:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55777 to 55572. [2021-12-21 13:01:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55572 states, 47029 states have (on average 1.5804716238916414) internal successors, (74328), 47034 states have internal predecessors, (74328), 8521 states have call successors, (8521), 17 states have call predecessors, (8521), 21 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2021-12-21 13:01:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55572 states to 55572 states and 92515 transitions. [2021-12-21 13:01:33,803 INFO L78 Accepts]: Start accepts. Automaton has 55572 states and 92515 transitions. Word has length 136 [2021-12-21 13:01:33,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:01:33,804 INFO L470 AbstractCegarLoop]: Abstraction has 55572 states and 92515 transitions. [2021-12-21 13:01:33,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 13:01:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 55572 states and 92515 transitions. [2021-12-21 13:01:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-21 13:01:33,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:01:33,851 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:01:33,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:01:33,851 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:01:33,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:01:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash 806716446, now seen corresponding path program 1 times [2021-12-21 13:01:33,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:01:33,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271176589] [2021-12-21 13:01:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:01:33,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:01:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 13:01:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:01:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:01:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:01:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 13:01:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:01:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:01:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 13:01:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 13:01:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:01:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:01:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:01:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 13:01:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:01:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 13:01:33,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:01:33,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271176589] [2021-12-21 13:01:33,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271176589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:01:33,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:01:33,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:01:33,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705873517] [2021-12-21 13:01:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:01:33,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:01:33,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:01:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:01:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:01:33,964 INFO L87 Difference]: Start difference. First operand 55572 states and 92515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)