./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b8a667539b0a7850f9a7aa38ebbe1ead0e2c55d4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:12:31,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:12:31,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:12:31,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:12:31,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:12:31,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:12:31,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:12:31,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:12:31,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:12:31,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:12:31,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:12:31,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:12:31,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:12:31,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:12:31,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:12:31,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:12:31,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:12:31,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:12:31,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:12:31,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:12:31,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:12:31,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:12:31,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:12:31,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:12:31,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:12:31,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:12:31,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:12:31,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:12:31,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:12:31,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:12:31,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:12:31,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:12:31,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:12:31,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:12:31,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:12:31,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:12:31,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:12:31,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:12:31,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:12:31,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:12:31,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:12:31,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:12:31,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:12:31,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:12:31,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:12:31,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:12:31,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:12:31,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:12:31,809 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:12:31,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:12:31,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:12:31,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:12:31,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:12:31,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:12:31,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:12:31,811 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:12:31,811 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:12:31,811 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:12:31,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:12:31,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:12:31,811 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:12:31,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:12:31,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:12:31,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:12:31,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:12:31,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:31,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:12:31,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:12:31,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:12:31,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:12:31,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:12:31,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8a667539b0a7850f9a7aa38ebbe1ead0e2c55d4 [2021-08-30 19:12:32,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:12:32,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:12:32,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:12:32,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:12:32,173 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:12:32,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c [2021-08-30 19:12:32,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d057d4f42/00f1168ae5534177b1a2a5caa68f9123/FLAGca1f0170d [2021-08-30 19:12:32,724 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:12:32,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c [2021-08-30 19:12:32,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d057d4f42/00f1168ae5534177b1a2a5caa68f9123/FLAGca1f0170d [2021-08-30 19:12:33,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d057d4f42/00f1168ae5534177b1a2a5caa68f9123 [2021-08-30 19:12:33,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:12:33,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:12:33,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:33,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:12:33,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:12:33,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff16a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33, skipping insertion in model container [2021-08-30 19:12:33,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:12:33,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:12:33,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:33,380 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:12:33,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:33,409 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:12:33,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33 WrapperNode [2021-08-30 19:12:33,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:33,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:12:33,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:12:33,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:12:33,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:12:33,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:12:33,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:12:33,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:12:33,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (1/1) ... [2021-08-30 19:12:33,546 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:33,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:33,570 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) [2021-08-30 19:12:33,602 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 [2021-08-30 19:12:33,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:12:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:12:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-08-30 19:12:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2021-08-30 19:12:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2021-08-30 19:12:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2021-08-30 19:12:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:12:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-08-30 19:12:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-08-30 19:12:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 19:12:33,627 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2021-08-30 19:12:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 19:12:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2021-08-30 19:12:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2021-08-30 19:12:33,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:12:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 19:12:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:12:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 19:12:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:12:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:12:33,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:12:33,885 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-30 19:12:33,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:33 BoogieIcfgContainer [2021-08-30 19:12:33,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:12:33,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:12:33,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:12:33,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:12:33,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:12:33" (1/3) ... [2021-08-30 19:12:33,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a636e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:33, skipping insertion in model container [2021-08-30 19:12:33,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:33" (2/3) ... [2021-08-30 19:12:33,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a636e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:33, skipping insertion in model container [2021-08-30 19:12:33,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:33" (3/3) ... [2021-08-30 19:12:33,897 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers4-1.c [2021-08-30 19:12:33,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:12:33,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-08-30 19:12:33,954 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:12:33,962 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-08-30 19:12:33,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-08-30 19:12:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 40 states have (on average 1.675) internal successors, (67), 57 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-08-30 19:12:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 19:12:33,998 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:33,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:33,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:34,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1833468390, now seen corresponding path program 1 times [2021-08-30 19:12:34,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:34,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415562025] [2021-08-30 19:12:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:34,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:34,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:34,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415562025] [2021-08-30 19:12:34,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415562025] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:34,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:34,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 19:12:34,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013856451] [2021-08-30 19:12:34,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 19:12:34,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:34,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 19:12:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 19:12:34,458 INFO L87 Difference]: Start difference. First operand has 70 states, 40 states have (on average 1.675) internal successors, (67), 57 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:34,814 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-08-30 19:12:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 19:12:34,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 19:12:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:34,823 INFO L225 Difference]: With dead ends: 117 [2021-08-30 19:12:34,824 INFO L226 Difference]: Without dead ends: 109 [2021-08-30 19:12:34,825 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 99.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:34,828 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 151 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.88ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:34,829 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 8 Invalid, 147 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 258.88ms Time] [2021-08-30 19:12:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-30 19:12:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 63. [2021-08-30 19:12:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 51 states have internal predecessors, (56), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-08-30 19:12:34,863 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 12 [2021-08-30 19:12:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:34,863 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-08-30 19:12:34,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-08-30 19:12:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 19:12:34,864 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:34,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:34,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 19:12:34,865 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1833468391, now seen corresponding path program 1 times [2021-08-30 19:12:34,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:34,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90669227] [2021-08-30 19:12:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:34,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:35,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:35,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90669227] [2021-08-30 19:12:35,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90669227] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:35,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:35,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 19:12:35,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293391785] [2021-08-30 19:12:35,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 19:12:35,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 19:12:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:35,074 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:35,359 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-08-30 19:12:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 19:12:35,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-08-30 19:12:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:35,364 INFO L225 Difference]: With dead ends: 66 [2021-08-30 19:12:35,364 INFO L226 Difference]: Without dead ends: 66 [2021-08-30 19:12:35,368 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 132.51ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-30 19:12:35,370 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 61 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.83ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:35,371 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 9 Invalid, 193 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 164.83ms Time] [2021-08-30 19:12:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-30 19:12:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-08-30 19:12:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 53 states have internal predecessors, (58), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-08-30 19:12:35,394 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 12 [2021-08-30 19:12:35,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:35,395 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-08-30 19:12:35,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:35,395 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-08-30 19:12:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 19:12:35,397 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:35,398 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:35,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 19:12:35,399 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:35,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1757784526, now seen corresponding path program 1 times [2021-08-30 19:12:35,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:35,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554424132] [2021-08-30 19:12:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:35,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:35,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:35,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554424132] [2021-08-30 19:12:35,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554424132] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:35,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542098988] [2021-08-30 19:12:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:35,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:35,589 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) [2021-08-30 19:12:35,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 19:12:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:35,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 19:12:35,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:35,861 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-08-30 19:12:35,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 67 [2021-08-30 19:12:35,876 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 19:12:35,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 120 [2021-08-30 19:12:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:36,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:37,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542098988] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:37,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:37,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2021-08-30 19:12:37,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710408269] [2021-08-30 19:12:37,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:12:37,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:37,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:12:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:12:37,070 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:12:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:37,208 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-08-30 19:12:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:12:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2021-08-30 19:12:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:37,210 INFO L225 Difference]: With dead ends: 71 [2021-08-30 19:12:37,210 INFO L226 Difference]: Without dead ends: 71 [2021-08-30 19:12:37,210 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 122.92ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:12:37,211 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 123.14ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:37,211 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 366 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 137 Unchecked, 123.14ms Time] [2021-08-30 19:12:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-30 19:12:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-30 19:12:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 59 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2021-08-30 19:12:37,217 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 15 [2021-08-30 19:12:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:37,217 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2021-08-30 19:12:37,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:12:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2021-08-30 19:12:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 19:12:37,218 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:37,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:37,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:37,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:37,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:37,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1275227987, now seen corresponding path program 1 times [2021-08-30 19:12:37,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:37,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033435419] [2021-08-30 19:12:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:37,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:37,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:37,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033435419] [2021-08-30 19:12:37,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033435419] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:37,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314216356] [2021-08-30 19:12:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:37,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:37,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:37,532 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) [2021-08-30 19:12:37,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 19:12:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:37,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 19:12:37,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:37,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:37,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314216356] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:37,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:37,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2021-08-30 19:12:37,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318401139] [2021-08-30 19:12:37,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:12:37,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:37,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:12:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:12:37,685 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 19:12:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:37,891 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-08-30 19:12:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:12:37,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-08-30 19:12:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:37,893 INFO L225 Difference]: With dead ends: 73 [2021-08-30 19:12:37,893 INFO L226 Difference]: Without dead ends: 73 [2021-08-30 19:12:37,894 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 64.63ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-30 19:12:37,895 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.55ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:37,895 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 35 Invalid, 300 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [13 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 169.55ms Time] [2021-08-30 19:12:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-30 19:12:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-30 19:12:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 61 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-08-30 19:12:37,902 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 20 [2021-08-30 19:12:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:37,903 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-08-30 19:12:37,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 19:12:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-08-30 19:12:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 19:12:37,903 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:37,904 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:37,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:38,116 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,SelfDestructingSolverStorable3 [2021-08-30 19:12:38,117 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:38,117 INFO L82 PathProgramCache]: Analyzing trace with hash -355499218, now seen corresponding path program 2 times [2021-08-30 19:12:38,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:38,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562134835] [2021-08-30 19:12:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:38,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:38,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:38,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:38,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562134835] [2021-08-30 19:12:38,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562134835] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:38,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217518037] [2021-08-30 19:12:38,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:12:38,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:38,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:38,297 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) [2021-08-30 19:12:38,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 19:12:38,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 19:12:38,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:12:38,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 19:12:38,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:38,421 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-08-30 19:12:38,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 67 [2021-08-30 19:12:38,437 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 19:12:38,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 196 [2021-08-30 19:12:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:39,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:39,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217518037] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:39,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:39,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2021-08-30 19:12:39,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68206104] [2021-08-30 19:12:39,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-30 19:12:39,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-30 19:12:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-08-30 19:12:39,798 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:12:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:40,103 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2021-08-30 19:12:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 19:12:40,104 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-08-30 19:12:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:40,106 INFO L225 Difference]: With dead ends: 92 [2021-08-30 19:12:40,107 INFO L226 Difference]: Without dead ends: 92 [2021-08-30 19:12:40,107 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 282.21ms TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:12:40,107 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 207.94ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:40,108 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 447 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 38 Unchecked, 207.94ms Time] [2021-08-30 19:12:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-30 19:12:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2021-08-30 19:12:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 71 states have internal predecessors, (79), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-08-30 19:12:40,112 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 21 [2021-08-30 19:12:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:40,112 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-08-30 19:12:40,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:12:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-08-30 19:12:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:12:40,118 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:40,118 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:40,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:40,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:40,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash 502160116, now seen corresponding path program 2 times [2021-08-30 19:12:40,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:40,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889234857] [2021-08-30 19:12:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:40,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-30 19:12:40,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:40,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889234857] [2021-08-30 19:12:40,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889234857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:40,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:40,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 19:12:40,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908362154] [2021-08-30 19:12:40,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:12:40,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:40,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:12:40,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:12:40,448 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 19:12:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:40,667 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2021-08-30 19:12:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:12:40,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-08-30 19:12:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:40,669 INFO L225 Difference]: With dead ends: 82 [2021-08-30 19:12:40,669 INFO L226 Difference]: Without dead ends: 82 [2021-08-30 19:12:40,669 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 91.56ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:12:40,670 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 67 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.05ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:40,670 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 12 Invalid, 315 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [18 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 157.05ms Time] [2021-08-30 19:12:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-30 19:12:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-08-30 19:12:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 57 states have (on average 1.368421052631579) internal successors, (78), 70 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-08-30 19:12:40,675 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 29 [2021-08-30 19:12:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:40,675 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-08-30 19:12:40,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 19:12:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-08-30 19:12:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 19:12:40,676 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:40,676 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:40,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 19:12:40,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:40,676 INFO L82 PathProgramCache]: Analyzing trace with hash 502160117, now seen corresponding path program 1 times [2021-08-30 19:12:40,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:40,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143030112] [2021-08-30 19:12:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:40,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:40,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:40,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143030112] [2021-08-30 19:12:40,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143030112] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:40,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604083268] [2021-08-30 19:12:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:40,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:40,849 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) [2021-08-30 19:12:40,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 19:12:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 19:12:40,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:40,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:41,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604083268] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:41,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:41,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-08-30 19:12:41,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62924516] [2021-08-30 19:12:41,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-30 19:12:41,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:41,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-30 19:12:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-08-30 19:12:41,095 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:12:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:41,476 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-08-30 19:12:41,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 19:12:41,477 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-08-30 19:12:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:41,478 INFO L225 Difference]: With dead ends: 92 [2021-08-30 19:12:41,478 INFO L226 Difference]: Without dead ends: 92 [2021-08-30 19:12:41,478 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 272.99ms TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2021-08-30 19:12:41,479 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 112 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.50ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:41,479 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 29 Invalid, 418 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [34 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 215.50ms Time] [2021-08-30 19:12:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-30 19:12:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2021-08-30 19:12:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 78 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-08-30 19:12:41,484 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 29 [2021-08-30 19:12:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:41,484 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-08-30 19:12:41,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:12:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-08-30 19:12:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 19:12:41,485 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:41,485 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:41,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:41,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:41,693 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1054318062, now seen corresponding path program 3 times [2021-08-30 19:12:41,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:41,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958454953] [2021-08-30 19:12:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:41,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:41,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:41,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958454953] [2021-08-30 19:12:41,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958454953] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:41,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602541006] [2021-08-30 19:12:41,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 19:12:41,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:41,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:41,929 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) [2021-08-30 19:12:41,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-30 19:12:41,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 19:12:41,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:12:41,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 19:12:41,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:42,050 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-08-30 19:12:42,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 67 [2021-08-30 19:12:42,057 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 19:12:42,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 132 [2021-08-30 19:12:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-08-30 19:12:43,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:12:43,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602541006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:43,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:12:43,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2021-08-30 19:12:43,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343417926] [2021-08-30 19:12:43,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:12:43,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:12:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:12:43,756 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:43,793 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2021-08-30 19:12:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:12:43,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-08-30 19:12:43,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:43,794 INFO L225 Difference]: With dead ends: 89 [2021-08-30 19:12:43,794 INFO L226 Difference]: Without dead ends: 89 [2021-08-30 19:12:43,794 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 202.84ms TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-08-30 19:12:43,795 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 32.92ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:43,795 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 155 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 111 Unchecked, 32.92ms Time] [2021-08-30 19:12:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-30 19:12:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-08-30 19:12:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 77 states have internal predecessors, (82), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2021-08-30 19:12:43,799 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 33 [2021-08-30 19:12:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:43,799 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2021-08-30 19:12:43,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2021-08-30 19:12:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-30 19:12:43,800 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:43,800 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:43,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:44,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:44,017 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:44,017 INFO L82 PathProgramCache]: Analyzing trace with hash -554526955, now seen corresponding path program 2 times [2021-08-30 19:12:44,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:44,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413249571] [2021-08-30 19:12:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:44,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 126 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:44,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:44,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413249571] [2021-08-30 19:12:44,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413249571] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:44,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483277021] [2021-08-30 19:12:44,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:12:44,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:44,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:44,297 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) [2021-08-30 19:12:44,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-30 19:12:44,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 19:12:44,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:12:44,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 19:12:44,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:44,426 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:12:44,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:12:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:44,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:12:44,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483277021] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:44,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:12:44,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 22 [2021-08-30 19:12:44,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998616090] [2021-08-30 19:12:44,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:12:44,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:12:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-08-30 19:12:44,744 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:44,911 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-08-30 19:12:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:12:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2021-08-30 19:12:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:44,913 INFO L225 Difference]: With dead ends: 96 [2021-08-30 19:12:44,913 INFO L226 Difference]: Without dead ends: 96 [2021-08-30 19:12:44,913 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 237.14ms TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-08-30 19:12:44,914 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.19ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:44,914 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 14 Invalid, 245 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 140.19ms Time] [2021-08-30 19:12:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-30 19:12:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2021-08-30 19:12:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-08-30 19:12:44,918 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 47 [2021-08-30 19:12:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:44,918 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-08-30 19:12:44,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-08-30 19:12:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-30 19:12:44,919 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:44,919 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:44,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:45,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:45,129 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:45,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:45,129 INFO L82 PathProgramCache]: Analyzing trace with hash -10466397, now seen corresponding path program 1 times [2021-08-30 19:12:45,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:45,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301957700] [2021-08-30 19:12:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:45,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,210 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:45,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:45,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301957700] [2021-08-30 19:12:45,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301957700] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:45,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:45,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:12:45,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105189198] [2021-08-30 19:12:45,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 19:12:45,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:45,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 19:12:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:45,212 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:45,345 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-08-30 19:12:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 19:12:45,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-08-30 19:12:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:45,346 INFO L225 Difference]: With dead ends: 90 [2021-08-30 19:12:45,346 INFO L226 Difference]: Without dead ends: 90 [2021-08-30 19:12:45,346 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.50ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:12:45,347 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 54 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.84ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:45,347 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 9 Invalid, 178 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [8 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 106.84ms Time] [2021-08-30 19:12:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-08-30 19:12:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-08-30 19:12:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 78 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2021-08-30 19:12:45,350 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 48 [2021-08-30 19:12:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:45,351 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2021-08-30 19:12:45,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2021-08-30 19:12:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-30 19:12:45,352 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:45,352 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:45,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 19:12:45,352 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash -10466396, now seen corresponding path program 1 times [2021-08-30 19:12:45,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:45,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091319435] [2021-08-30 19:12:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:45,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:45,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:45,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091319435] [2021-08-30 19:12:45,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091319435] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:45,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:45,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 19:12:45,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057891112] [2021-08-30 19:12:45,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:12:45,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:45,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:12:45,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:12:45,454 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:45,599 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2021-08-30 19:12:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:12:45,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-08-30 19:12:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:45,600 INFO L225 Difference]: With dead ends: 93 [2021-08-30 19:12:45,600 INFO L226 Difference]: Without dead ends: 93 [2021-08-30 19:12:45,601 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 56.82ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-30 19:12:45,604 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 65 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.14ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:45,606 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 9 Invalid, 188 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [13 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 114.14ms Time] [2021-08-30 19:12:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-30 19:12:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-08-30 19:12:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-08-30 19:12:45,610 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 48 [2021-08-30 19:12:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:45,611 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-08-30 19:12:45,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-08-30 19:12:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-30 19:12:45,612 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:45,612 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:45,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 19:12:45,613 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:45,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2035746631, now seen corresponding path program 1 times [2021-08-30 19:12:45,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:45,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653064247] [2021-08-30 19:12:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:45,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:45,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:45,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653064247] [2021-08-30 19:12:45,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653064247] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:45,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844248267] [2021-08-30 19:12:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:45,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:45,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:45,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:12:45,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-30 19:12:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:45,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-30 19:12:45,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:46,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:46,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 19:12:46,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-30 19:12:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:47,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844248267] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:47,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:47,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 51 [2021-08-30 19:12:47,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067817944] [2021-08-30 19:12:47,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-30 19:12:47,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:47,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-30 19:12:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2114, Unknown=0, NotChecked=0, Total=2652 [2021-08-30 19:12:47,360 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 52 states, 51 states have (on average 2.588235294117647) internal successors, (132), 46 states have internal predecessors, (132), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:12:48,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:48,452 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2021-08-30 19:12:48,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-30 19:12:48,452 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.588235294117647) internal successors, (132), 46 states have internal predecessors, (132), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 52 [2021-08-30 19:12:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:48,453 INFO L225 Difference]: With dead ends: 113 [2021-08-30 19:12:48,453 INFO L226 Difference]: Without dead ends: 113 [2021-08-30 19:12:48,455 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 1373.79ms TimeCoverageRelationStatistics Valid=1041, Invalid=3929, Unknown=0, NotChecked=0, Total=4970 [2021-08-30 19:12:48,456 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 330 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 441.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 539.84ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:48,456 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 26 Invalid, 1100 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [83 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 539.84ms Time] [2021-08-30 19:12:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-30 19:12:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2021-08-30 19:12:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 93 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2021-08-30 19:12:48,459 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 52 [2021-08-30 19:12:48,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:48,460 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2021-08-30 19:12:48,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.588235294117647) internal successors, (132), 46 states have internal predecessors, (132), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:12:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2021-08-30 19:12:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-30 19:12:48,460 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:48,460 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:48,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:48,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:48,681 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:48,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:48,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1316363854, now seen corresponding path program 1 times [2021-08-30 19:12:48,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:48,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377143079] [2021-08-30 19:12:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:48,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:48,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:48,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377143079] [2021-08-30 19:12:48,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377143079] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:48,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883308797] [2021-08-30 19:12:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:48,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:48,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:12:48,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-30 19:12:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:48,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 19:12:48,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:48,967 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-08-30 19:12:48,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 70 [2021-08-30 19:12:48,977 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 19:12:48,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 338 treesize of output 320 [2021-08-30 19:12:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:51,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:51,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883308797] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:51,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:51,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2021-08-30 19:12:51,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878250009] [2021-08-30 19:12:51,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 19:12:51,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:51,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 19:12:51,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:12:51,789 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 13 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:12:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:51,933 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2021-08-30 19:12:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:12:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 53 [2021-08-30 19:12:51,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:51,934 INFO L225 Difference]: With dead ends: 108 [2021-08-30 19:12:51,934 INFO L226 Difference]: Without dead ends: 108 [2021-08-30 19:12:51,935 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 116.43ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:12:51,935 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 127.50ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:51,935 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 327 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 55 Unchecked, 127.50ms Time] [2021-08-30 19:12:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-08-30 19:12:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2021-08-30 19:12:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 93 states have internal predecessors, (100), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-08-30 19:12:51,940 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 53 [2021-08-30 19:12:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:51,940 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-08-30 19:12:51,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:12:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-08-30 19:12:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-30 19:12:51,945 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:51,945 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-08-30 19:12:51,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:52,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-30 19:12:52,153 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:52,154 INFO L82 PathProgramCache]: Analyzing trace with hash -317183978, now seen corresponding path program 1 times [2021-08-30 19:12:52,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:52,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782417226] [2021-08-30 19:12:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:52,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:12:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-08-30 19:12:52,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:52,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782417226] [2021-08-30 19:12:52,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782417226] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:52,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:52,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 19:12:52,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764917068] [2021-08-30 19:12:52,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:12:52,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:12:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:12:52,245 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 19:12:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:52,441 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-08-30 19:12:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:12:52,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 62 [2021-08-30 19:12:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:52,442 INFO L225 Difference]: With dead ends: 104 [2021-08-30 19:12:52,442 INFO L226 Difference]: Without dead ends: 104 [2021-08-30 19:12:52,443 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 71.56ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:12:52,443 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 61 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.36ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:52,443 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 12 Invalid, 353 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [15 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 151.36ms Time] [2021-08-30 19:12:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-30 19:12:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-08-30 19:12:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 92 states have internal predecessors, (99), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2021-08-30 19:12:52,446 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 62 [2021-08-30 19:12:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:52,446 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2021-08-30 19:12:52,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 19:12:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2021-08-30 19:12:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-30 19:12:52,447 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:52,447 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-08-30 19:12:52,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 19:12:52,447 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash -317183977, now seen corresponding path program 1 times [2021-08-30 19:12:52,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:52,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935790577] [2021-08-30 19:12:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:52,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:12:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:52,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:52,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935790577] [2021-08-30 19:12:52,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935790577] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:52,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163528910] [2021-08-30 19:12:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:52,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:52,572 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:12:52,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-30 19:12:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:52,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 19:12:52,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:52,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:52,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163528910] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:52,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:52,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2021-08-30 19:12:52,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996304109] [2021-08-30 19:12:52,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 19:12:52,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 19:12:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:12:52,854 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-30 19:12:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:53,103 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2021-08-30 19:12:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:12:53,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 62 [2021-08-30 19:12:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:53,105 INFO L225 Difference]: With dead ends: 116 [2021-08-30 19:12:53,105 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 19:12:53,105 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 145.78ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-08-30 19:12:53,105 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 111 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.99ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:53,106 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 36 Invalid, 430 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [23 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 171.99ms Time] [2021-08-30 19:12:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 19:12:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2021-08-30 19:12:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 101 states have internal predecessors, (109), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2021-08-30 19:12:53,109 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 62 [2021-08-30 19:12:53,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:53,109 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2021-08-30 19:12:53,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-30 19:12:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2021-08-30 19:12:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-30 19:12:53,110 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:53,110 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:53,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:53,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-30 19:12:53,318 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:53,318 INFO L82 PathProgramCache]: Analyzing trace with hash -134627086, now seen corresponding path program 2 times [2021-08-30 19:12:53,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:53,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939930412] [2021-08-30 19:12:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:53,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:12:53,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:53,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939930412] [2021-08-30 19:12:53,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939930412] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:53,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364521864] [2021-08-30 19:12:53,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:12:53,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:53,469 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:12:53,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-30 19:12:53,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 19:12:53,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:12:53,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 19:12:53,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:53,603 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-08-30 19:12:53,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 70 [2021-08-30 19:12:53,609 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-30 19:12:53,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 115 [2021-08-30 19:12:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-08-30 19:12:56,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-08-30 19:12:57,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364521864] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:12:57,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:12:57,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2021-08-30 19:12:57,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538825011] [2021-08-30 19:12:57,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 19:12:57,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:12:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 19:12:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-08-30 19:12:57,556 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:12:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:57,878 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2021-08-30 19:12:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 19:12:57,879 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2021-08-30 19:12:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:57,879 INFO L225 Difference]: With dead ends: 112 [2021-08-30 19:12:57,879 INFO L226 Difference]: Without dead ends: 112 [2021-08-30 19:12:57,880 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 115 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 474.15ms TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-08-30 19:12:57,880 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 131.88ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:57,880 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 428 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 115 Unchecked, 131.88ms Time] [2021-08-30 19:12:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-30 19:12:57,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-08-30 19:12:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 1.164835164835165) internal successors, (106), 100 states have internal predecessors, (106), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:12:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2021-08-30 19:12:57,884 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 63 [2021-08-30 19:12:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:57,884 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2021-08-30 19:12:57,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:12:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2021-08-30 19:12:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-30 19:12:57,885 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:57,885 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:57,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:58,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-30 19:12:58,093 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:12:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash -226941547, now seen corresponding path program 2 times [2021-08-30 19:12:58,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:58,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225358913] [2021-08-30 19:12:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:58,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:12:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:12:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 126 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:58,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:12:58,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225358913] [2021-08-30 19:12:58,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225358913] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:12:58,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961891956] [2021-08-30 19:12:58,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:12:58,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:12:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:58,452 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:12:58,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-30 19:12:58,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 19:12:58,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:12:58,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-30 19:12:58,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 126 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:59,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:59,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 19:12:59,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-30 19:13:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 126 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:13:00,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961891956] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:00,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:00,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 60 [2021-08-30 19:13:00,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630889534] [2021-08-30 19:13:00,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-08-30 19:13:00,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:00,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-08-30 19:13:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=3080, Unknown=0, NotChecked=0, Total=3660 [2021-08-30 19:13:00,335 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand has 61 states, 60 states have (on average 2.95) internal successors, (177), 55 states have internal predecessors, (177), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:13:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:02,152 INFO L93 Difference]: Finished difference Result 145 states and 153 transitions. [2021-08-30 19:13:02,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-30 19:13:02,153 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.95) internal successors, (177), 55 states have internal predecessors, (177), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 67 [2021-08-30 19:13:02,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:02,154 INFO L225 Difference]: With dead ends: 145 [2021-08-30 19:13:02,154 INFO L226 Difference]: Without dead ends: 145 [2021-08-30 19:13:02,156 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 2103.79ms TimeCoverageRelationStatistics Valid=1194, Invalid=6116, Unknown=0, NotChecked=0, Total=7310 [2021-08-30 19:13:02,156 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 377 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 770.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.40ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 917.97ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:02,156 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 36 Invalid, 2129 Unknown, 0 Unchecked, 8.40ms Time], IncrementalHoareTripleChecker [96 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 917.97ms Time] [2021-08-30 19:13:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-30 19:13:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 133. [2021-08-30 19:13:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.1607142857142858) internal successors, (130), 121 states have internal predecessors, (130), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2021-08-30 19:13:02,160 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 67 [2021-08-30 19:13:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:02,161 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2021-08-30 19:13:02,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.95) internal successors, (177), 55 states have internal predecessors, (177), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:13:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2021-08-30 19:13:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-08-30 19:13:02,162 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:02,162 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:02,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:02,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-30 19:13:02,377 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:02,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1322437015, now seen corresponding path program 2 times [2021-08-30 19:13:02,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:02,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062013953] [2021-08-30 19:13:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:02,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:02,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:02,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:02,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:02,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062013953] [2021-08-30 19:13:02,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062013953] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:02,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661568749] [2021-08-30 19:13:02,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:13:02,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:02,553 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:02,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-30 19:13:02,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 19:13:02,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:02,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 19:13:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:02,662 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:02,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-08-30 19:13:03,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:13:03,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661568749] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:03,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:13:03,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2021-08-30 19:13:03,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122204620] [2021-08-30 19:13:03,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:13:03,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:13:03,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-08-30 19:13:03,081 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 19:13:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:03,211 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2021-08-30 19:13:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:13:03,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 82 [2021-08-30 19:13:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:03,215 INFO L225 Difference]: With dead ends: 140 [2021-08-30 19:13:03,215 INFO L226 Difference]: Without dead ends: 140 [2021-08-30 19:13:03,216 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 149.63ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-08-30 19:13:03,216 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.87ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:03,216 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 14 Invalid, 233 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 104.87ms Time] [2021-08-30 19:13:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-30 19:13:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2021-08-30 19:13:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 123 states have internal predecessors, (132), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 143 transitions. [2021-08-30 19:13:03,220 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 143 transitions. Word has length 82 [2021-08-30 19:13:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:03,220 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 143 transitions. [2021-08-30 19:13:03,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 19:13:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 143 transitions. [2021-08-30 19:13:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-08-30 19:13:03,221 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:03,221 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:03,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:03,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-30 19:13:03,439 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:03,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:03,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1954125495, now seen corresponding path program 1 times [2021-08-30 19:13:03,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:03,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175791302] [2021-08-30 19:13:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:03,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:03,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:03,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:03,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175791302] [2021-08-30 19:13:03,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175791302] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:03,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356744145] [2021-08-30 19:13:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:03,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:03,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:03,587 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:03,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-30 19:13:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:03,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 19:13:03,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:03,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:03,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356744145] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:03,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:03,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 14 [2021-08-30 19:13:03,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21883954] [2021-08-30 19:13:03,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:13:03,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:13:03,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:13:03,980 INFO L87 Difference]: Start difference. First operand 135 states and 143 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 12 states have internal predecessors, (66), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:04,151 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2021-08-30 19:13:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:13:04,151 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 12 states have internal predecessors, (66), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 83 [2021-08-30 19:13:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:04,152 INFO L225 Difference]: With dead ends: 135 [2021-08-30 19:13:04,152 INFO L226 Difference]: Without dead ends: 135 [2021-08-30 19:13:04,152 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 90.83ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:13:04,153 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.93ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:04,153 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 35 Invalid, 305 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [10 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 160.93ms Time] [2021-08-30 19:13:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-30 19:13:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-08-30 19:13:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 114 states have (on average 1.1228070175438596) internal successors, (128), 123 states have internal predecessors, (128), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2021-08-30 19:13:04,156 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 83 [2021-08-30 19:13:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2021-08-30 19:13:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 12 states have internal predecessors, (66), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2021-08-30 19:13:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-08-30 19:13:04,157 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:04,157 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:04,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:04,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:04,357 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:04,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1685093547, now seen corresponding path program 3 times [2021-08-30 19:13:04,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:04,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341816341] [2021-08-30 19:13:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:04,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:04,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 19:13:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 199 proven. 46 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:04,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:04,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341816341] [2021-08-30 19:13:04,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341816341] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:04,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524524835] [2021-08-30 19:13:04,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 19:13:04,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:04,525 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:04,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-30 19:13:04,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 19:13:04,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:04,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 19:13:04,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-08-30 19:13:04,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:13:04,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524524835] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:04,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:13:04,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 24 [2021-08-30 19:13:04,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900693900] [2021-08-30 19:13:04,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 19:13:04,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:04,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 19:13:04,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-08-30 19:13:04,978 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 19:13:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:05,256 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2021-08-30 19:13:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:13:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2021-08-30 19:13:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:05,257 INFO L225 Difference]: With dead ends: 134 [2021-08-30 19:13:05,258 INFO L226 Difference]: Without dead ends: 134 [2021-08-30 19:13:05,258 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 297.99ms TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2021-08-30 19:13:05,259 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.00ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:05,259 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 18 Invalid, 423 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 189.00ms Time] [2021-08-30 19:13:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-08-30 19:13:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-08-30 19:13:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 121 states have internal predecessors, (126), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2021-08-30 19:13:05,262 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 97 [2021-08-30 19:13:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:05,263 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2021-08-30 19:13:05,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 19:13:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2021-08-30 19:13:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-08-30 19:13:05,264 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:05,264 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:05,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:05,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:05,481 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1085818935, now seen corresponding path program 2 times [2021-08-30 19:13:05,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:05,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093738453] [2021-08-30 19:13:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:05,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:05,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:05,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093738453] [2021-08-30 19:13:05,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093738453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:05,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:05,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:13:05,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045971853] [2021-08-30 19:13:05,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 19:13:05,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 19:13:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:13:05,589 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:13:05,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:05,684 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2021-08-30 19:13:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 19:13:05,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 103 [2021-08-30 19:13:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:05,686 INFO L225 Difference]: With dead ends: 132 [2021-08-30 19:13:05,686 INFO L226 Difference]: Without dead ends: 132 [2021-08-30 19:13:05,686 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.30ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:13:05,690 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 52 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.94ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:05,691 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 9 Invalid, 117 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 69.94ms Time] [2021-08-30 19:13:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-30 19:13:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-08-30 19:13:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 113 states have (on average 1.1061946902654867) internal successors, (125), 120 states have internal predecessors, (125), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2021-08-30 19:13:05,695 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2021-08-30 19:13:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:05,695 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2021-08-30 19:13:05,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:13:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2021-08-30 19:13:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-08-30 19:13:05,696 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:05,697 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:05,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-30 19:13:05,697 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:05,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1085818934, now seen corresponding path program 1 times [2021-08-30 19:13:05,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:05,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171511236] [2021-08-30 19:13:05,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:05,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:05,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:05,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171511236] [2021-08-30 19:13:05,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171511236] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:05,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:05,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 19:13:05,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675002731] [2021-08-30 19:13:05,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:13:05,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:13:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:13:05,843 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:13:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:05,985 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2021-08-30 19:13:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:13:05,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 103 [2021-08-30 19:13:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:05,987 INFO L225 Difference]: With dead ends: 135 [2021-08-30 19:13:05,987 INFO L226 Difference]: Without dead ends: 135 [2021-08-30 19:13:05,987 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 60.12ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-30 19:13:05,988 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 61 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.61ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.10ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:05,988 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 9 Invalid, 176 Unknown, 0 Unchecked, 2.61ms Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 105.10ms Time] [2021-08-30 19:13:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-30 19:13:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-08-30 19:13:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 114 states have (on average 1.105263157894737) internal successors, (126), 121 states have internal predecessors, (126), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2021-08-30 19:13:05,993 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 103 [2021-08-30 19:13:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:05,993 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2021-08-30 19:13:05,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:13:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2021-08-30 19:13:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-08-30 19:13:05,994 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:05,995 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-08-30 19:13:05,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-30 19:13:05,995 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:05,995 INFO L82 PathProgramCache]: Analyzing trace with hash -508253587, now seen corresponding path program 1 times [2021-08-30 19:13:05,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:05,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818352430] [2021-08-30 19:13:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:05,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 207 proven. 30 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:06,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:06,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818352430] [2021-08-30 19:13:06,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818352430] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:06,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543784016] [2021-08-30 19:13:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:06,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:06,303 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:06,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-30 19:13:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:06,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-30 19:13:06,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 207 proven. 30 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:07,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:07,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 19:13:07,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-30 19:13:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 207 proven. 30 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:07,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543784016] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:07,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:07,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2021-08-30 19:13:07,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175637699] [2021-08-30 19:13:07,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-30 19:13:07,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-30 19:13:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2114, Unknown=0, NotChecked=0, Total=2652 [2021-08-30 19:13:07,833 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 52 states, 51 states have (on average 4.0588235294117645) internal successors, (207), 47 states have internal predecessors, (207), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:08,841 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2021-08-30 19:13:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-30 19:13:08,842 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.0588235294117645) internal successors, (207), 47 states have internal predecessors, (207), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 107 [2021-08-30 19:13:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:08,843 INFO L225 Difference]: With dead ends: 155 [2021-08-30 19:13:08,843 INFO L226 Difference]: Without dead ends: 155 [2021-08-30 19:13:08,844 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 1240.45ms TimeCoverageRelationStatistics Valid=1017, Invalid=3813, Unknown=0, NotChecked=0, Total=4830 [2021-08-30 19:13:08,845 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 191 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 412.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 528.41ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:08,845 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 32 Invalid, 1215 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [53 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 528.41ms Time] [2021-08-30 19:13:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-30 19:13:08,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2021-08-30 19:13:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.125) internal successors, (144), 135 states have internal predecessors, (144), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2021-08-30 19:13:08,849 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 107 [2021-08-30 19:13:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:08,849 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2021-08-30 19:13:08,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.0588235294117645) internal successors, (207), 47 states have internal predecessors, (207), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2021-08-30 19:13:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-08-30 19:13:08,851 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:08,851 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-08-30 19:13:08,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:09,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:09,076 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:09,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:09,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1424007988, now seen corresponding path program 1 times [2021-08-30 19:13:09,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:09,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755735783] [2021-08-30 19:13:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:09,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:09,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:09,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:09,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:09,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755735783] [2021-08-30 19:13:09,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755735783] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:09,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119171188] [2021-08-30 19:13:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:09,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:09,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:09,245 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:09,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-30 19:13:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:09,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 19:13:09,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:09,393 INFO L354 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2021-08-30 19:13:09,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-08-30 19:13:09,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 148 [2021-08-30 19:13:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:12,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:13,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119171188] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:13,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:13,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2021-08-30 19:13:13,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802187629] [2021-08-30 19:13:13,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-30 19:13:13,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:13,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-30 19:13:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:13:13,169 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 13 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:13,251 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-08-30 19:13:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:13:13,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 108 [2021-08-30 19:13:13,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:13,256 INFO L225 Difference]: With dead ends: 150 [2021-08-30 19:13:13,256 INFO L226 Difference]: Without dead ends: 150 [2021-08-30 19:13:13,257 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 120.97ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:13:13,257 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 66.07ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:13,257 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 203 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 47 Unchecked, 66.07ms Time] [2021-08-30 19:13:13,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-08-30 19:13:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2021-08-30 19:13:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.109375) internal successors, (142), 135 states have internal predecessors, (142), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2021-08-30 19:13:13,261 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 108 [2021-08-30 19:13:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:13,262 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2021-08-30 19:13:13,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2021-08-30 19:13:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-08-30 19:13:13,263 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:13,263 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-08-30 19:13:13,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:13,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-30 19:13:13,477 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:13,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1387314960, now seen corresponding path program 1 times [2021-08-30 19:13:13,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:13,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94675980] [2021-08-30 19:13:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:13,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-08-30 19:13:13,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:13,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94675980] [2021-08-30 19:13:13,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94675980] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:13,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:13,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 19:13:13,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867263991] [2021-08-30 19:13:13,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:13:13,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:13:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:13:13,604 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:13,797 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2021-08-30 19:13:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:13:13,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 117 [2021-08-30 19:13:13,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:13,799 INFO L225 Difference]: With dead ends: 146 [2021-08-30 19:13:13,799 INFO L226 Difference]: Without dead ends: 146 [2021-08-30 19:13:13,799 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 79.89ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:13:13,803 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 59 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142.37ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:13,804 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 12 Invalid, 279 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [17 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 142.37ms Time] [2021-08-30 19:13:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-30 19:13:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-08-30 19:13:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 128 states have (on average 1.1015625) internal successors, (141), 134 states have internal predecessors, (141), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2021-08-30 19:13:13,809 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 117 [2021-08-30 19:13:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:13,810 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 152 transitions. [2021-08-30 19:13:13,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 152 transitions. [2021-08-30 19:13:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-08-30 19:13:13,811 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:13,811 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-08-30 19:13:13,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-30 19:13:13,811 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:13,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1387314961, now seen corresponding path program 1 times [2021-08-30 19:13:13,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:13,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121124631] [2021-08-30 19:13:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:13,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:13,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:13,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121124631] [2021-08-30 19:13:13,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121124631] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:13,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624641227] [2021-08-30 19:13:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:13,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:13,940 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:13,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-30 19:13:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:14,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 19:13:14,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:14,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:14,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624641227] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:14,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:14,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2021-08-30 19:13:14,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206339437] [2021-08-30 19:13:14,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 19:13:14,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 19:13:14,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:13:14,406 INFO L87 Difference]: Start difference. First operand 146 states and 152 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 19:13:14,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:14,552 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2021-08-30 19:13:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:13:14,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 117 [2021-08-30 19:13:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:14,553 INFO L225 Difference]: With dead ends: 158 [2021-08-30 19:13:14,553 INFO L226 Difference]: Without dead ends: 158 [2021-08-30 19:13:14,553 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.17ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:13:14,554 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.71ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:14,554 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 46 Invalid, 314 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [11 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 139.71ms Time] [2021-08-30 19:13:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-30 19:13:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2021-08-30 19:13:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 137 states have (on average 1.102189781021898) internal successors, (151), 143 states have internal predecessors, (151), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 162 transitions. [2021-08-30 19:13:14,558 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 162 transitions. Word has length 117 [2021-08-30 19:13:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:14,558 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 162 transitions. [2021-08-30 19:13:14,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 19:13:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 162 transitions. [2021-08-30 19:13:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-08-30 19:13:14,559 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:14,559 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:14,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:14,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-30 19:13:14,785 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:14,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:14,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1147500788, now seen corresponding path program 2 times [2021-08-30 19:13:14,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:14,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675022202] [2021-08-30 19:13:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:14,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:14,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:14,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675022202] [2021-08-30 19:13:14,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675022202] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:14,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902075999] [2021-08-30 19:13:14,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:13:14,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:14,972 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:14,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-30 19:13:15,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 19:13:15,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:15,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 19:13:15,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:15,088 INFO L354 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2021-08-30 19:13:15,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-08-30 19:13:15,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 102 [2021-08-30 19:13:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2021-08-30 19:13:19,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2021-08-30 19:13:19,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902075999] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:19,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:19,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2021-08-30 19:13:19,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105805083] [2021-08-30 19:13:19,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 19:13:19,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 19:13:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-08-30 19:13:19,949 INFO L87 Difference]: Start difference. First operand 155 states and 162 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:20,230 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2021-08-30 19:13:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 19:13:20,230 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 118 [2021-08-30 19:13:20,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:20,231 INFO L225 Difference]: With dead ends: 154 [2021-08-30 19:13:20,231 INFO L226 Difference]: Without dead ends: 154 [2021-08-30 19:13:20,232 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 227 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 500.53ms TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-30 19:13:20,232 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 57.25ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:20,232 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 272 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 140 Unchecked, 57.25ms Time] [2021-08-30 19:13:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-30 19:13:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-08-30 19:13:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 137 states have (on average 1.0802919708029197) internal successors, (148), 142 states have internal predecessors, (148), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2021-08-30 19:13:20,236 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 118 [2021-08-30 19:13:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:20,236 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2021-08-30 19:13:20,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 17 states have internal predecessors, (78), 5 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2021-08-30 19:13:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-08-30 19:13:20,237 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:20,238 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:20,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:20,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-30 19:13:20,445 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash 844744343, now seen corresponding path program 2 times [2021-08-30 19:13:20,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:20,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368797184] [2021-08-30 19:13:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:20,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:20,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:20,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:20,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368797184] [2021-08-30 19:13:20,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368797184] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:20,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226835999] [2021-08-30 19:13:20,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:13:20,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:20,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:20,830 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:20,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-30 19:13:20,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 19:13:20,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:20,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-30 19:13:20,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:21,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:22,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 19:13:22,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-30 19:13:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 19:13:22,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226835999] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:22,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:22,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 60 [2021-08-30 19:13:22,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888859081] [2021-08-30 19:13:22,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-08-30 19:13:22,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-08-30 19:13:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=3080, Unknown=0, NotChecked=0, Total=3660 [2021-08-30 19:13:22,718 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand has 61 states, 60 states have (on average 4.2) internal successors, (252), 56 states have internal predecessors, (252), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:24,357 INFO L93 Difference]: Finished difference Result 187 states and 195 transitions. [2021-08-30 19:13:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-30 19:13:24,358 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 4.2) internal successors, (252), 56 states have internal predecessors, (252), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 122 [2021-08-30 19:13:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:24,358 INFO L225 Difference]: With dead ends: 187 [2021-08-30 19:13:24,358 INFO L226 Difference]: Without dead ends: 187 [2021-08-30 19:13:24,360 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1603 ImplicationChecksByTransitivity, 1865.86ms TimeCoverageRelationStatistics Valid=1173, Invalid=5967, Unknown=0, NotChecked=0, Total=7140 [2021-08-30 19:13:24,360 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 451 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 692.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.65ms SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 855.91ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:24,361 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 41 Invalid, 2223 Unknown, 0 Unchecked, 6.65ms Time], IncrementalHoareTripleChecker [116 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 855.91ms Time] [2021-08-30 19:13:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-08-30 19:13:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 175. [2021-08-30 19:13:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 158 states have (on average 1.0886075949367089) internal successors, (172), 163 states have internal predecessors, (172), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 183 transitions. [2021-08-30 19:13:24,365 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 183 transitions. Word has length 122 [2021-08-30 19:13:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:24,365 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 183 transitions. [2021-08-30 19:13:24,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 4.2) internal successors, (252), 56 states have internal predecessors, (252), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-08-30 19:13:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 183 transitions. [2021-08-30 19:13:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-08-30 19:13:24,366 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:24,366 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:24,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:24,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:24,573 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:24,573 INFO L82 PathProgramCache]: Analyzing trace with hash -2070269039, now seen corresponding path program 2 times [2021-08-30 19:13:24,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:24,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228020005] [2021-08-30 19:13:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:24,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:24,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:24,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:24,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:24,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228020005] [2021-08-30 19:13:24,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228020005] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:24,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795435306] [2021-08-30 19:13:24,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:13:24,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:24,749 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:24,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-30 19:13:24,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 19:13:24,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:24,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 19:13:24,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:24,888 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:24,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-08-30 19:13:25,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:13:25,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795435306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:25,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:13:25,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2021-08-30 19:13:25,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020884331] [2021-08-30 19:13:25,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:13:25,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:25,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:13:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-08-30 19:13:25,480 INFO L87 Difference]: Start difference. First operand 175 states and 183 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:25,601 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2021-08-30 19:13:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:13:25,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 137 [2021-08-30 19:13:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:25,603 INFO L225 Difference]: With dead ends: 182 [2021-08-30 19:13:25,603 INFO L226 Difference]: Without dead ends: 182 [2021-08-30 19:13:25,603 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 111.86ms TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-08-30 19:13:25,604 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.49ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:25,604 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 217 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 97.49ms Time] [2021-08-30 19:13:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-30 19:13:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 177. [2021-08-30 19:13:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 160 states have (on average 1.0875) internal successors, (174), 165 states have internal predecessors, (174), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 185 transitions. [2021-08-30 19:13:25,608 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 185 transitions. Word has length 137 [2021-08-30 19:13:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:25,609 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 185 transitions. [2021-08-30 19:13:25,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 185 transitions. [2021-08-30 19:13:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-08-30 19:13:25,609 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:25,610 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:25,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-08-30 19:13:25,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-30 19:13:25,825 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting getNumbers4Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:25,825 INFO L82 PathProgramCache]: Analyzing trace with hash 246169183, now seen corresponding path program 1 times [2021-08-30 19:13:25,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:25,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119653369] [2021-08-30 19:13:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:25,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-08-30 19:13:25,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:25,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119653369] [2021-08-30 19:13:25,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119653369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:25,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:25,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 19:13:25,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279226333] [2021-08-30 19:13:25,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 19:13:25,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 19:13:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:13:25,950 INFO L87 Difference]: Start difference. First operand 177 states and 185 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 19:13:26,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:26,050 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2021-08-30 19:13:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 19:13:26,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 138 [2021-08-30 19:13:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:26,051 INFO L225 Difference]: With dead ends: 176 [2021-08-30 19:13:26,051 INFO L226 Difference]: Without dead ends: 176 [2021-08-30 19:13:26,052 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.04ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:13:26,052 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.18ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:26,053 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 9 Invalid, 111 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 74.18ms Time] [2021-08-30 19:13:26,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-30 19:13:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-08-30 19:13:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 160 states have (on average 1.08125) internal successors, (173), 164 states have internal predecessors, (173), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 184 transitions. [2021-08-30 19:13:26,058 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 184 transitions. Word has length 138 [2021-08-30 19:13:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:26,058 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 184 transitions. [2021-08-30 19:13:26,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 19:13:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 184 transitions. [2021-08-30 19:13:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-08-30 19:13:26,060 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:26,060 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:26,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-30 19:13:26,061 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash 246169184, now seen corresponding path program 1 times [2021-08-30 19:13:26,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:26,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509126113] [2021-08-30 19:13:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:26,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:26,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:26,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509126113] [2021-08-30 19:13:26,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509126113] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:26,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107015821] [2021-08-30 19:13:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:26,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:26,225 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:26,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-30 19:13:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:26,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 19:13:26,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:26,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:26,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107015821] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:26,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:26,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 14 [2021-08-30 19:13:26,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539987244] [2021-08-30 19:13:26,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:13:26,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:26,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:13:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:13:26,747 INFO L87 Difference]: Start difference. First operand 176 states and 184 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 12 states have internal predecessors, (75), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 19:13:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:26,918 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2021-08-30 19:13:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:13:26,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 12 states have internal predecessors, (75), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 138 [2021-08-30 19:13:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:26,919 INFO L225 Difference]: With dead ends: 176 [2021-08-30 19:13:26,920 INFO L226 Difference]: Without dead ends: 176 [2021-08-30 19:13:26,920 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 79.44ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:13:26,921 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.74ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:26,922 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 45 Invalid, 273 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [12 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 163.74ms Time] [2021-08-30 19:13:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-30 19:13:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-08-30 19:13:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 160 states have (on average 1.05625) internal successors, (169), 164 states have internal predecessors, (169), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2021-08-30 19:13:26,927 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 138 [2021-08-30 19:13:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:26,928 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2021-08-30 19:13:26,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 12 states have internal predecessors, (75), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-08-30 19:13:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2021-08-30 19:13:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-08-30 19:13:26,929 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:26,929 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:26,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:27,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:27,145 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:27,145 INFO L82 PathProgramCache]: Analyzing trace with hash 524584919, now seen corresponding path program 3 times [2021-08-30 19:13:27,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:27,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709914446] [2021-08-30 19:13:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:27,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:27,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:27,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-30 19:13:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 199 proven. 46 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:27,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:27,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709914446] [2021-08-30 19:13:27,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709914446] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:27,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248644006] [2021-08-30 19:13:27,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 19:13:27,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:27,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:27,321 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:27,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-30 19:13:27,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 19:13:27,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 19:13:27,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:27,451 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:27,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-08-30 19:13:28,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:13:28,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248644006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:28,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:13:28,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 22 [2021-08-30 19:13:28,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601678234] [2021-08-30 19:13:28,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 19:13:28,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 19:13:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:13:28,198 INFO L87 Difference]: Start difference. First operand 176 states and 180 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 19:13:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:28,429 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2021-08-30 19:13:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:13:28,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 152 [2021-08-30 19:13:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:28,431 INFO L225 Difference]: With dead ends: 175 [2021-08-30 19:13:28,431 INFO L226 Difference]: Without dead ends: 175 [2021-08-30 19:13:28,431 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 242.25ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-08-30 19:13:28,431 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.39ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:28,432 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 16 Invalid, 323 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 161.39ms Time] [2021-08-30 19:13:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-30 19:13:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-08-30 19:13:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 159 states have (on average 1.050314465408805) internal successors, (167), 162 states have internal predecessors, (167), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2021-08-30 19:13:28,435 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 152 [2021-08-30 19:13:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:28,436 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2021-08-30 19:13:28,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 19:13:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2021-08-30 19:13:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-08-30 19:13:28,437 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:28,437 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:28,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:28,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:28,638 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:28,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:28,638 INFO L82 PathProgramCache]: Analyzing trace with hash 869308896, now seen corresponding path program 2 times [2021-08-30 19:13:28,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:28,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927942592] [2021-08-30 19:13:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:28,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:28,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:28,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:28,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:28,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927942592] [2021-08-30 19:13:28,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927942592] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:28,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:28,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 19:13:28,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786965771] [2021-08-30 19:13:28,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 19:13:28,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:28,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 19:13:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:13:28,788 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 19:13:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:28,924 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2021-08-30 19:13:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:13:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 158 [2021-08-30 19:13:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:28,931 INFO L225 Difference]: With dead ends: 177 [2021-08-30 19:13:28,931 INFO L226 Difference]: Without dead ends: 177 [2021-08-30 19:13:28,931 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 53.97ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-30 19:13:28,932 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 53 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.87ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:28,932 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 10 Invalid, 211 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [11 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 105.87ms Time] [2021-08-30 19:13:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-08-30 19:13:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2021-08-30 19:13:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 160 states have (on average 1.05) internal successors, (168), 163 states have internal predecessors, (168), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2021-08-30 19:13:28,936 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 158 [2021-08-30 19:13:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:28,937 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2021-08-30 19:13:28,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 19:13:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2021-08-30 19:13:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-08-30 19:13:28,938 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:28,938 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-08-30 19:13:28,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-30 19:13:28,938 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:28,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:28,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1142687107, now seen corresponding path program 1 times [2021-08-30 19:13:28,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:28,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390897826] [2021-08-30 19:13:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:28,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 207 proven. 30 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:29,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:29,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390897826] [2021-08-30 19:13:29,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390897826] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:29,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294346743] [2021-08-30 19:13:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:29,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:29,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:29,301 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:29,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-30 19:13:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:29,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-30 19:13:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 207 proven. 30 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:30,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:30,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 19:13:30,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-30 19:13:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 207 proven. 30 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:30,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294346743] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:30,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:30,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 48 [2021-08-30 19:13:30,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266737776] [2021-08-30 19:13:30,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-08-30 19:13:30,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:30,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-08-30 19:13:30,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1826, Unknown=0, NotChecked=0, Total=2352 [2021-08-30 19:13:30,834 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 49 states, 48 states have (on average 4.5625) internal successors, (219), 45 states have internal predecessors, (219), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 19:13:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:31,794 INFO L93 Difference]: Finished difference Result 197 states and 203 transitions. [2021-08-30 19:13:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-30 19:13:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 4.5625) internal successors, (219), 45 states have internal predecessors, (219), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 162 [2021-08-30 19:13:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:31,796 INFO L225 Difference]: With dead ends: 197 [2021-08-30 19:13:31,796 INFO L226 Difference]: Without dead ends: 197 [2021-08-30 19:13:31,797 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 962.65ms TimeCoverageRelationStatistics Valid=961, Invalid=3329, Unknown=0, NotChecked=0, Total=4290 [2021-08-30 19:13:31,797 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 128 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 520.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 632.73ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:31,798 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 29 Invalid, 1395 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [34 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 632.73ms Time] [2021-08-30 19:13:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-08-30 19:13:31,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2021-08-30 19:13:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 174 states have (on average 1.0689655172413792) internal successors, (186), 177 states have internal predecessors, (186), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 197 transitions. [2021-08-30 19:13:31,802 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 197 transitions. Word has length 162 [2021-08-30 19:13:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:31,802 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 197 transitions. [2021-08-30 19:13:31,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 4.5625) internal successors, (219), 45 states have internal predecessors, (219), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 19:13:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 197 transitions. [2021-08-30 19:13:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-08-30 19:13:31,803 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:31,804 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-08-30 19:13:31,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:32,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:32,017 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:32,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1063561902, now seen corresponding path program 1 times [2021-08-30 19:13:32,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:32,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682527237] [2021-08-30 19:13:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:32,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:32,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:32,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682527237] [2021-08-30 19:13:32,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682527237] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:32,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771381769] [2021-08-30 19:13:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:32,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:32,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:32,189 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:32,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-30 19:13:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:32,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 19:13:32,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:32,373 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:32,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:33,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771381769] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:33,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-08-30 19:13:33,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360005249] [2021-08-30 19:13:33,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 19:13:33,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 19:13:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:13:33,321 INFO L87 Difference]: Start difference. First operand 189 states and 197 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 19:13:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:33,537 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2021-08-30 19:13:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:13:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 163 [2021-08-30 19:13:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:33,539 INFO L225 Difference]: With dead ends: 190 [2021-08-30 19:13:33,539 INFO L226 Difference]: Without dead ends: 190 [2021-08-30 19:13:33,539 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 121.53ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:13:33,539 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 103 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.22ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:33,539 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 11 Invalid, 254 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [29 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 154.22ms Time] [2021-08-30 19:13:33,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-08-30 19:13:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-08-30 19:13:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 175 states have (on average 1.0457142857142858) internal successors, (183), 178 states have internal predecessors, (183), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 194 transitions. [2021-08-30 19:13:33,543 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 194 transitions. Word has length 163 [2021-08-30 19:13:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:33,544 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 194 transitions. [2021-08-30 19:13:33,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 19:13:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 194 transitions. [2021-08-30 19:13:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-08-30 19:13:33,545 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:33,545 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:33,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:33,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:33,761 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:33,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:33,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1969063569, now seen corresponding path program 2 times [2021-08-30 19:13:33,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:33,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343176945] [2021-08-30 19:13:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:33,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:34,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:34,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343176945] [2021-08-30 19:13:34,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343176945] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:34,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882833675] [2021-08-30 19:13:34,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:13:34,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:34,196 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:34,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-30 19:13:34,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 19:13:34,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:34,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-30 19:13:34,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:35,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:35,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-08-30 19:13:35,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-08-30 19:13:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-30 19:13:36,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882833675] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:36,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:36,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 57 [2021-08-30 19:13:36,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182262947] [2021-08-30 19:13:36,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-30 19:13:36,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-30 19:13:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=2738, Unknown=0, NotChecked=0, Total=3306 [2021-08-30 19:13:36,143 INFO L87 Difference]: Start difference. First operand 190 states and 194 transitions. Second operand has 58 states, 57 states have (on average 4.631578947368421) internal successors, (264), 54 states have internal predecessors, (264), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 19:13:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:37,462 INFO L93 Difference]: Finished difference Result 239 states and 248 transitions. [2021-08-30 19:13:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-30 19:13:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 4.631578947368421) internal successors, (264), 54 states have internal predecessors, (264), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 177 [2021-08-30 19:13:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:37,464 INFO L225 Difference]: With dead ends: 239 [2021-08-30 19:13:37,464 INFO L226 Difference]: Without dead ends: 239 [2021-08-30 19:13:37,465 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 1467.79ms TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2021-08-30 19:13:37,466 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 510 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 639.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 776.11ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:37,466 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 22 Invalid, 1834 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [128 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 776.11ms Time] [2021-08-30 19:13:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-08-30 19:13:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 219. [2021-08-30 19:13:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 204 states have (on average 1.088235294117647) internal successors, (222), 207 states have internal predecessors, (222), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 233 transitions. [2021-08-30 19:13:37,472 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 233 transitions. Word has length 177 [2021-08-30 19:13:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:37,473 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 233 transitions. [2021-08-30 19:13:37,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 4.631578947368421) internal successors, (264), 54 states have internal predecessors, (264), 4 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-08-30 19:13:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 233 transitions. [2021-08-30 19:13:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-08-30 19:13:37,475 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:37,475 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:37,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:37,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-08-30 19:13:37,676 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:37,677 INFO L82 PathProgramCache]: Analyzing trace with hash 911428448, now seen corresponding path program 2 times [2021-08-30 19:13:37,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:37,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038025908] [2021-08-30 19:13:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:37,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:37,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:37,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:37,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038025908] [2021-08-30 19:13:37,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038025908] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:37,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296374412] [2021-08-30 19:13:37,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:13:37,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:37,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:37,893 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:37,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-30 19:13:37,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 19:13:37,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:37,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 19:13:37,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:38,040 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:38,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-08-30 19:13:39,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-08-30 19:13:39,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296374412] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:39,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:39,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2021-08-30 19:13:39,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472143950] [2021-08-30 19:13:39,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-30 19:13:39,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-30 19:13:39,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:13:39,990 INFO L87 Difference]: Start difference. First operand 219 states and 233 transitions. Second operand has 22 states, 21 states have (on average 4.809523809523809) internal successors, (101), 18 states have internal predecessors, (101), 5 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-08-30 19:13:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:40,470 INFO L93 Difference]: Finished difference Result 218 states and 226 transitions. [2021-08-30 19:13:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 19:13:40,470 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.809523809523809) internal successors, (101), 18 states have internal predecessors, (101), 5 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 178 [2021-08-30 19:13:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:40,471 INFO L225 Difference]: With dead ends: 218 [2021-08-30 19:13:40,471 INFO L226 Difference]: Without dead ends: 218 [2021-08-30 19:13:40,472 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 450.34ms TimeCoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2021-08-30 19:13:40,472 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 137 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 286.32ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:40,473 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 16 Invalid, 691 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [42 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 286.32ms Time] [2021-08-30 19:13:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-08-30 19:13:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-08-30 19:13:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 204 states have (on average 1.053921568627451) internal successors, (215), 206 states have internal predecessors, (215), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2021-08-30 19:13:40,477 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 178 [2021-08-30 19:13:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:40,477 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2021-08-30 19:13:40,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.809523809523809) internal successors, (101), 18 states have internal predecessors, (101), 5 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-08-30 19:13:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2021-08-30 19:13:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-08-30 19:13:40,478 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:40,479 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:40,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:40,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-30 19:13:40,704 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:40,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:40,705 INFO L82 PathProgramCache]: Analyzing trace with hash -64062468, now seen corresponding path program 1 times [2021-08-30 19:13:40,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:40,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032600966] [2021-08-30 19:13:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:40,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:13:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2021-08-30 19:13:40,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:40,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032600966] [2021-08-30 19:13:40,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032600966] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:40,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:40,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 19:13:40,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220868424] [2021-08-30 19:13:40,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:13:40,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:40,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:13:40,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:13:40,877 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:13:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:41,060 INFO L93 Difference]: Finished difference Result 217 states and 225 transitions. [2021-08-30 19:13:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:13:41,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 192 [2021-08-30 19:13:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:41,062 INFO L225 Difference]: With dead ends: 217 [2021-08-30 19:13:41,062 INFO L226 Difference]: Without dead ends: 217 [2021-08-30 19:13:41,062 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 74.81ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:13:41,062 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 47 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.55ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:41,063 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 12 Invalid, 304 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [14 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 135.55ms Time] [2021-08-30 19:13:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-08-30 19:13:41,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-08-30 19:13:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.0490196078431373) internal successors, (214), 205 states have internal predecessors, (214), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 225 transitions. [2021-08-30 19:13:41,067 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 225 transitions. Word has length 192 [2021-08-30 19:13:41,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:41,067 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 225 transitions. [2021-08-30 19:13:41,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:13:41,067 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 225 transitions. [2021-08-30 19:13:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-08-30 19:13:41,068 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:41,069 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:41,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-30 19:13:41,069 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash -64062467, now seen corresponding path program 1 times [2021-08-30 19:13:41,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:41,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738648777] [2021-08-30 19:13:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:41,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:13:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:41,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:41,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:41,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738648777] [2021-08-30 19:13:41,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738648777] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:41,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080437008] [2021-08-30 19:13:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:41,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:41,269 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:41,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-30 19:13:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:41,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 19:13:41,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:41,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:41,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080437008] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:41,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:41,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 14 [2021-08-30 19:13:41,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661439499] [2021-08-30 19:13:41,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 19:13:41,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:41,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 19:13:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:13:41,892 INFO L87 Difference]: Start difference. First operand 217 states and 225 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 12 states have internal predecessors, (83), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-08-30 19:13:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:42,085 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2021-08-30 19:13:42,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 19:13:42,086 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 12 states have internal predecessors, (83), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 192 [2021-08-30 19:13:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:42,086 INFO L225 Difference]: With dead ends: 217 [2021-08-30 19:13:42,087 INFO L226 Difference]: Without dead ends: 217 [2021-08-30 19:13:42,087 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 81.43ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 19:13:42,088 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.61ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:42,089 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 68 Invalid, 375 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [8 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 183.61ms Time] [2021-08-30 19:13:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-08-30 19:13:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-08-30 19:13:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 204 states have (on average 1.0294117647058822) internal successors, (210), 205 states have internal predecessors, (210), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2021-08-30 19:13:42,093 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 192 [2021-08-30 19:13:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:42,094 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2021-08-30 19:13:42,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 12 states have internal predecessors, (83), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-08-30 19:13:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2021-08-30 19:13:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-08-30 19:13:42,095 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:42,095 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:42,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:42,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-30 19:13:42,309 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:42,309 INFO L82 PathProgramCache]: Analyzing trace with hash 199801937, now seen corresponding path program 3 times [2021-08-30 19:13:42,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:42,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228176391] [2021-08-30 19:13:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:42,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 19:13:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 199 proven. 46 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-08-30 19:13:42,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:42,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228176391] [2021-08-30 19:13:42,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228176391] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:42,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370867706] [2021-08-30 19:13:42,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 19:13:42,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:42,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:42,509 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:42,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-30 19:13:42,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 19:13:42,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:42,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 19:13:42,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:42,641 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:42,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2021-08-30 19:13:43,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:13:43,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370867706] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:43,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:13:43,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 22 [2021-08-30 19:13:43,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770856399] [2021-08-30 19:13:43,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 19:13:43,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 19:13:43,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-08-30 19:13:43,545 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:43,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:43,690 INFO L93 Difference]: Finished difference Result 216 states and 220 transitions. [2021-08-30 19:13:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:13:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 207 [2021-08-30 19:13:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:43,691 INFO L225 Difference]: With dead ends: 216 [2021-08-30 19:13:43,691 INFO L226 Difference]: Without dead ends: 216 [2021-08-30 19:13:43,692 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 218.30ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-08-30 19:13:43,692 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.45ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:43,693 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 14 Invalid, 219 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 93.45ms Time] [2021-08-30 19:13:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-08-30 19:13:43,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-08-30 19:13:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 203 states have (on average 1.0246305418719213) internal successors, (208), 203 states have internal predecessors, (208), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2021-08-30 19:13:43,697 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 207 [2021-08-30 19:13:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:43,697 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2021-08-30 19:13:43,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:13:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2021-08-30 19:13:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-08-30 19:13:43,698 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:43,699 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:43,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:43,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-30 19:13:43,914 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:43,914 INFO L82 PathProgramCache]: Analyzing trace with hash 656723325, now seen corresponding path program 2 times [2021-08-30 19:13:43,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:43,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201501344] [2021-08-30 19:13:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:43,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:13:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:44,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:44,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201501344] [2021-08-30 19:13:44,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201501344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:44,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:13:44,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 19:13:44,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649937117] [2021-08-30 19:13:44,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:13:44,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:13:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:13:44,232 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:13:44,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:44,435 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2021-08-30 19:13:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:13:44,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 212 [2021-08-30 19:13:44,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:44,437 INFO L225 Difference]: With dead ends: 219 [2021-08-30 19:13:44,437 INFO L226 Difference]: Without dead ends: 219 [2021-08-30 19:13:44,437 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 111.56ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:13:44,438 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 52 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.96ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:44,438 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 12 Invalid, 258 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [15 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 133.96ms Time] [2021-08-30 19:13:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-08-30 19:13:44,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2021-08-30 19:13:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 205 states have (on average 1.024390243902439) internal successors, (210), 205 states have internal predecessors, (210), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2021-08-30 19:13:44,441 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 212 [2021-08-30 19:13:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:44,441 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2021-08-30 19:13:44,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:13:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2021-08-30 19:13:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-08-30 19:13:44,442 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:44,442 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2021-08-30 19:13:44,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-30 19:13:44,443 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:44,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1154285632, now seen corresponding path program 1 times [2021-08-30 19:13:44,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:44,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682017839] [2021-08-30 19:13:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:44,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:13:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:44,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:44,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682017839] [2021-08-30 19:13:44,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682017839] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:44,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003323584] [2021-08-30 19:13:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:44,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:44,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:44,781 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:44,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-30 19:13:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:44,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-30 19:13:44,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:44,977 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:44,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:45,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:46,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003323584] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:46,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:46,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-08-30 19:13:46,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12683255] [2021-08-30 19:13:46,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 19:13:46,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:46,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 19:13:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-08-30 19:13:46,230 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand has 15 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 4 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-08-30 19:13:46,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:46,547 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2021-08-30 19:13:46,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:13:46,547 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 4 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 216 [2021-08-30 19:13:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:46,548 INFO L225 Difference]: With dead ends: 229 [2021-08-30 19:13:46,548 INFO L226 Difference]: Without dead ends: 229 [2021-08-30 19:13:46,548 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 217.89ms TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-08-30 19:13:46,549 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 79 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227.45ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:46,549 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 17 Invalid, 606 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [31 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 227.45ms Time] [2021-08-30 19:13:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-08-30 19:13:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-08-30 19:13:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 217 states have (on average 1.023041474654378) internal successors, (222), 217 states have internal predecessors, (222), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2021-08-30 19:13:46,552 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 216 [2021-08-30 19:13:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:46,553 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2021-08-30 19:13:46,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.428571428571429) internal successors, (90), 11 states have internal predecessors, (90), 4 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-08-30 19:13:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2021-08-30 19:13:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-08-30 19:13:46,554 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:46,554 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:46,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:46,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:46,769 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:46,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:46,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2080768119, now seen corresponding path program 2 times [2021-08-30 19:13:46,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:46,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096003931] [2021-08-30 19:13:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:46,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:47,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:13:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:47,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:47,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:47,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:47,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096003931] [2021-08-30 19:13:47,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096003931] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:47,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390240465] [2021-08-30 19:13:47,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 19:13:47,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:47,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:47,160 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:47,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-30 19:13:47,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 19:13:47,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:47,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-30 19:13:47,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:47,363 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:47,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:48,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:13:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:48,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390240465] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:13:48,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 19:13:48,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2021-08-30 19:13:48,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573721545] [2021-08-30 19:13:48,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 19:13:48,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 19:13:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-08-30 19:13:48,960 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 21 states, 20 states have (on average 5.7) internal successors, (114), 17 states have internal predecessors, (114), 4 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-08-30 19:13:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:49,542 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2021-08-30 19:13:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-30 19:13:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.7) internal successors, (114), 17 states have internal predecessors, (114), 4 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 228 [2021-08-30 19:13:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:49,543 INFO L225 Difference]: With dead ends: 253 [2021-08-30 19:13:49,543 INFO L226 Difference]: Without dead ends: 253 [2021-08-30 19:13:49,544 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 453 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 465.59ms TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2021-08-30 19:13:49,544 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 127 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 334.86ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:49,544 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 18 Invalid, 842 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [49 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 334.86ms Time] [2021-08-30 19:13:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-08-30 19:13:49,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-08-30 19:13:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 241 states have (on average 1.020746887966805) internal successors, (246), 241 states have internal predecessors, (246), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-30 19:13:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 257 transitions. [2021-08-30 19:13:49,548 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 257 transitions. Word has length 228 [2021-08-30 19:13:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:49,548 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 257 transitions. [2021-08-30 19:13:49,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.7) internal successors, (114), 17 states have internal predecessors, (114), 4 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-08-30 19:13:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 257 transitions. [2021-08-30 19:13:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-08-30 19:13:49,549 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:13:49,549 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:13:49,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:49,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-08-30 19:13:49,750 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-30 19:13:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:13:49,750 INFO L82 PathProgramCache]: Analyzing trace with hash 832785819, now seen corresponding path program 3 times [2021-08-30 19:13:49,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:13:49,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679868000] [2021-08-30 19:13:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:13:49,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:13:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-30 19:13:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 19:13:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:13:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 163 proven. 37 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-08-30 19:13:50,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 19:13:50,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679868000] [2021-08-30 19:13:50,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679868000] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 19:13:50,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41510689] [2021-08-30 19:13:50,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 19:13:50,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:50,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:13:50,253 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 19:13:50,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-30 19:13:50,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-30 19:13:50,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 19:13:50,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 19:13:50,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:13:50,405 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-30 19:13:50,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-08-30 19:13:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2021-08-30 19:13:51,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 19:13:51,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41510689] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 19:13:51,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 19:13:51,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 25 [2021-08-30 19:13:51,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062594859] [2021-08-30 19:13:51,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 19:13:51,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 19:13:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 19:13:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2021-08-30 19:13:51,587 INFO L87 Difference]: Start difference. First operand 253 states and 257 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:13:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:13:51,758 INFO L93 Difference]: Finished difference Result 252 states and 256 transitions. [2021-08-30 19:13:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:13:51,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 252 [2021-08-30 19:13:51,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:13:51,759 INFO L225 Difference]: With dead ends: 252 [2021-08-30 19:13:51,759 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 19:13:51,759 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 337.84ms TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2021-08-30 19:13:51,759 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.60ms IncrementalHoareTripleChecker+Time [2021-08-30 19:13:51,759 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 207 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 112.60ms Time] [2021-08-30 19:13:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 19:13:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 19:13:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 19:13:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 19:13:51,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 252 [2021-08-30 19:13:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:13:51,760 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 19:13:51,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-08-30 19:13:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 19:13:51,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 19:13:51,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers4Err0REQUIRES_VIOLATION (16 of 17 remaining) [2021-08-30 19:13:51,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers4Err1REQUIRES_VIOLATION (15 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers4Err2REQUIRES_VIOLATION (14 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers4Err3REQUIRES_VIOLATION (13 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION (12 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION (11 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK (10 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers3Err0REQUIRES_VIOLATION (9 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers3Err1REQUIRES_VIOLATION (8 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers3Err2REQUIRES_VIOLATION (7 of 17 remaining) [2021-08-30 19:13:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers3Err3REQUIRES_VIOLATION (6 of 17 remaining) [2021-08-30 19:13:51,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers2Err0REQUIRES_VIOLATION (5 of 17 remaining) [2021-08-30 19:13:51,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers2Err1REQUIRES_VIOLATION (4 of 17 remaining) [2021-08-30 19:13:51,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers2Err2REQUIRES_VIOLATION (3 of 17 remaining) [2021-08-30 19:13:51,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbers2Err3REQUIRES_VIOLATION (2 of 17 remaining) [2021-08-30 19:13:51,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbersErr0REQUIRES_VIOLATION (1 of 17 remaining) [2021-08-30 19:13:51,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbersErr1REQUIRES_VIOLATION (0 of 17 remaining) [2021-08-30 19:13:51,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-08-30 19:13:51,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 19:13:51,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:13:51,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:13:51 BoogieIcfgContainer [2021-08-30 19:13:51,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:13:51,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:13:51,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:13:51,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:13:51,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:33" (3/4) ... [2021-08-30 19:13:51,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 19:13:51,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 19:13:51,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers3 [2021-08-30 19:13:51,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers2 [2021-08-30 19:13:51,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers4 [2021-08-30 19:13:51,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 19:13:51,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers [2021-08-30 19:13:51,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-08-30 19:13:51,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-30 19:13:51,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 19:13:51,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 19:13:52,030 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:13:52,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:13:52,030 INFO L158 Benchmark]: Toolchain (without parser) took 78826.34ms. Allocated memory was 52.4MB in the beginning and 249.6MB in the end (delta: 197.1MB). Free memory was 29.0MB in the beginning and 207.9MB in the end (delta: -178.9MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-08-30 19:13:52,030 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 52.4MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:13:52,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.11ms. Allocated memory is still 52.4MB. Free memory was 28.7MB in the beginning and 19.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 19:13:52,031 INFO L158 Benchmark]: Boogie Preprocessor took 125.82ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 19.0MB in the beginning and 47.4MB in the end (delta: -28.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 19:13:52,031 INFO L158 Benchmark]: RCFGBuilder took 350.85ms. Allocated memory is still 65.0MB. Free memory was 47.4MB in the beginning and 35.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 19:13:52,031 INFO L158 Benchmark]: TraceAbstraction took 78085.13ms. Allocated memory was 65.0MB in the beginning and 249.6MB in the end (delta: 184.5MB). Free memory was 35.0MB in the beginning and 211.5MB in the end (delta: -176.5MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-08-30 19:13:52,031 INFO L158 Benchmark]: Witness Printer took 53.98ms. Allocated memory is still 249.6MB. Free memory was 211.5MB in the beginning and 207.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 19:13:52,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 52.4MB. Free memory was 33.9MB in the beginning and 33.9MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.11ms. Allocated memory is still 52.4MB. Free memory was 28.7MB in the beginning and 19.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.82ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 19.0MB in the beginning and 47.4MB in the end (delta: -28.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 350.85ms. Allocated memory is still 65.0MB. Free memory was 47.4MB in the beginning and 35.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 78085.13ms. Allocated memory was 65.0MB in the beginning and 249.6MB in the end (delta: 184.5MB). Free memory was 35.0MB in the beginning and 211.5MB in the end (delta: -176.5MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 53.98ms. Allocated memory is still 249.6MB. Free memory was 211.5MB in the beginning and 207.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 47]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 47]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 70 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 78019.74ms, OverallIterations: 44, TraceHistogramMax: 11, EmptinessCheckTime: 58.62ms, AutomataDifference: 16175.24ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 13.05ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3995 SdHoareTripleChecker+Valid, 9824.64ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3976 mSDsluCounter, 900 SdHoareTripleChecker+Invalid, 8002.62ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 643 IncrementalHoareTripleChecker+Unchecked, 7891 mSDsCounter, 974 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19982 IncrementalHoareTripleChecker+Invalid, 21599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 974 mSolverCounterUnsat, 379 mSDtfsCounter, 19982 mSolverCounterSat, 101.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6857 GetRequests, 5829 SyntacticMatches, 27 SemanticMatches, 1001 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10433 ImplicationChecksByTransitivity, 15432.75ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=43, InterpolantAutomatonStates: 496, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 193.31ms AutomataMinimizationTime, 44 MinimizatonAttempts, 164 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 516.20ms SsaConstructionTime, 1962.15ms SatisfiabilityAnalysisTime, 50995.36ms InterpolantComputationTime, 8230 NumberOfCodeBlocks, 7173 NumberOfCodeBlocksAsserted, 85 NumberOfCheckSat, 10623 ConstructedInterpolants, 397 QuantifiedInterpolants, 66488 SizeOfPredicates, 150 NumberOfNonLiveVariables, 9953 ConjunctsInSsa, 491 ConjunctsInUnsatCore, 98 InterpolantComputations, 21 PerfectInterpolantSequences, 34943/37326 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 19:13:52,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...