./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/getNumbers4-2.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 440325a953e10d2173456ab8f8c8fc1313a6b958 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:51:47,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:51:47,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:51:47,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:51:47,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:51:47,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:51:47,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:51:47,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:51:47,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:51:47,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:51:47,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:51:47,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:51:47,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:51:47,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:51:47,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:51:47,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:51:47,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:51:47,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:51:47,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:51:47,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:51:47,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:51:47,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:51:47,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:51:47,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:51:47,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:51:47,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:51:47,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:51:47,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:51:47,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:51:47,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:51:47,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:51:47,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:51:47,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:51:47,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:51:47,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:51:47,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:51:47,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:51:47,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:51:47,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:51:47,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:51:47,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:51:47,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:51:47,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:51:47,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:51:47,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:51:47,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:51:47,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:51:47,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:51:47,223 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:51:47,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:51:47,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:51:47,224 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:51:47,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:51:47,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:51:47,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:51:47,225 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:51:47,225 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:51:47,225 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:51:47,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:51:47,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:51:47,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:51:47,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:51:47,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:51:47,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:51:47,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:51:47,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:47,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:51:47,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:51:47,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:51:47,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:51:47,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:51:47,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 440325a953e10d2173456ab8f8c8fc1313a6b958 [2021-08-27 07:51:47,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:51:47,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:51:47,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:51:47,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:51:47,580 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:51:47,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-08-27 07:51:47,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449cb39ab/39a8a4b725eb409b96c2e0ae013a9515/FLAG732e94508 [2021-08-27 07:51:48,002 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:51:48,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-08-27 07:51:48,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449cb39ab/39a8a4b725eb409b96c2e0ae013a9515/FLAG732e94508 [2021-08-27 07:51:48,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449cb39ab/39a8a4b725eb409b96c2e0ae013a9515 [2021-08-27 07:51:48,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:51:48,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:51:48,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:48,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:51:48,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:51:48,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3844d7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48, skipping insertion in model container [2021-08-27 07:51:48,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:51:48,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:51:48,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:48,577 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:51:48,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:48,605 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:51:48,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48 WrapperNode [2021-08-27 07:51:48,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:48,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:51:48,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:51:48,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:51:48,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:51:48,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:51:48,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:51:48,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:51:48,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (1/1) ... [2021-08-27 07:51:48,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:48,693 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) [2021-08-27 07:51:48,704 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 [2021-08-27 07:51:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:51:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:51:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-08-27 07:51:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2021-08-27 07:51:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2021-08-27 07:51:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2021-08-27 07:51:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:51:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-08-27 07:51:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-08-27 07:51:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:51:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2021-08-27 07:51:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:51:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2021-08-27 07:51:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:51:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:51:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2021-08-27 07:51:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:51:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:51:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 07:51:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:51:49,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:51:49,171 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 07:51:49,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:49 BoogieIcfgContainer [2021-08-27 07:51:49,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:51:49,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:51:49,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:51:49,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:51:49,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:51:48" (1/3) ... [2021-08-27 07:51:49,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0511eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:49, skipping insertion in model container [2021-08-27 07:51:49,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:48" (2/3) ... [2021-08-27 07:51:49,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0511eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:49, skipping insertion in model container [2021-08-27 07:51:49,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:49" (3/3) ... [2021-08-27 07:51:49,181 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2021-08-27 07:51:49,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:51:49,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-08-27 07:51:49,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:51:49,234 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 [2021-08-27 07:51:49,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-08-27 07:51:49,245 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) [2021-08-27 07:51:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:51:49,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:49,251 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:49,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:49,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1833468390, now seen corresponding path program 1 times [2021-08-27 07:51:49,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:49,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247135191] [2021-08-27 07:51:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:49,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:49,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:49,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247135191] [2021-08-27 07:51:49,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247135191] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:49,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:49,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:51:49,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685492938] [2021-08-27 07:51:49,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:51:49,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:51:49,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:51:49,625 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) [2021-08-27 07:51:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:49,901 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-08-27 07:51:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:51:49,903 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 [2021-08-27 07:51:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:49,910 INFO L225 Difference]: With dead ends: 87 [2021-08-27 07:51:49,910 INFO L226 Difference]: Without dead ends: 84 [2021-08-27 07:51:49,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:49,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-27 07:51:49,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2021-08-27 07:51:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 54 states have internal predecessors, (59), 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) [2021-08-27 07:51:49,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-08-27 07:51:49,945 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2021-08-27 07:51:49,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:49,946 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-08-27 07:51:49,946 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) [2021-08-27 07:51:49,946 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-08-27 07:51:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 07:51:49,946 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:49,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:49,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:51:49,947 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:49,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1833468391, now seen corresponding path program 1 times [2021-08-27 07:51:49,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:49,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169711251] [2021-08-27 07:51:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:49,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:50,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:50,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169711251] [2021-08-27 07:51:50,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169711251] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:50,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:50,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:51:50,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682795204] [2021-08-27 07:51:50,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:51:50,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:51:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:50,079 INFO L87 Difference]: Start difference. First operand 66 states and 70 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) [2021-08-27 07:51:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:50,270 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-08-27 07:51:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:51:50,271 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 [2021-08-27 07:51:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:50,272 INFO L225 Difference]: With dead ends: 69 [2021-08-27 07:51:50,272 INFO L226 Difference]: Without dead ends: 69 [2021-08-27 07:51:50,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:51:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-08-27 07:51:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-08-27 07:51:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 56 states have internal predecessors, (61), 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) [2021-08-27 07:51:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-08-27 07:51:50,278 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 12 [2021-08-27 07:51:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:50,279 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-08-27 07:51:50,279 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) [2021-08-27 07:51:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-08-27 07:51:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 07:51:50,280 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:50,280 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:50,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:51:50,280 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:50,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1757784526, now seen corresponding path program 1 times [2021-08-27 07:51:50,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:50,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007842061] [2021-08-27 07:51:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:50,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:50,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:50,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007842061] [2021-08-27 07:51:50,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007842061] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:50,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279481585] [2021-08-27 07:51:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:50,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:50,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:50,427 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) [2021-08-27 07:51:50,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 07:51:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 07:51:50,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:50,631 INFO L354 Elim1Store]: treesize reduction 89, result has 18.3 percent of original size [2021-08-27 07:51:50,632 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 3 case distinctions, treesize of input 47 treesize of output 56 [2021-08-27 07:51:50,646 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 07:51:50,646 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 186 treesize of output 182 [2021-08-27 07:51:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:51,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279481585] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:51,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:51,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-08-27 07:51:51,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282569726] [2021-08-27 07:51:51,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:51:51,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:51:51,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:51:51,483 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:51,769 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-08-27 07:51:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:51:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-08-27 07:51:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:51,771 INFO L225 Difference]: With dead ends: 72 [2021-08-27 07:51:51,771 INFO L226 Difference]: Without dead ends: 72 [2021-08-27 07:51:51,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:51:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-27 07:51:51,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-08-27 07:51:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 59 states have internal predecessors, (64), 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) [2021-08-27 07:51:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-08-27 07:51:51,776 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 15 [2021-08-27 07:51:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:51,776 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-08-27 07:51:51,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-08-27 07:51:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 07:51:51,777 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:51,777 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:51,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:51,992 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 [2021-08-27 07:51:51,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1917592711, now seen corresponding path program 2 times [2021-08-27 07:51:51,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:51,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069664276] [2021-08-27 07:51:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:51,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:52,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:52,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069664276] [2021-08-27 07:51:52,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069664276] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:52,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510002899] [2021-08-27 07:51:52,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:52,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:52,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:52,177 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) [2021-08-27 07:51:52,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 07:51:52,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:51:52,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:52,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 07:51:52,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:52,355 INFO L354 Elim1Store]: treesize reduction 89, result has 18.3 percent of original size [2021-08-27 07:51:52,355 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 3 case distinctions, treesize of input 47 treesize of output 56 [2021-08-27 07:51:52,372 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-08-27 07:51:52,372 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 112 treesize of output 108 [2021-08-27 07:51:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:53,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510002899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:53,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:51:53,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2021-08-27 07:51:53,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227451753] [2021-08-27 07:51:53,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:51:53,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:53,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:51:53,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:51:53,227 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-08-27 07:51:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:53,318 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-08-27 07:51:53,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:51:53,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 18 [2021-08-27 07:51:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:53,319 INFO L225 Difference]: With dead ends: 71 [2021-08-27 07:51:53,319 INFO L226 Difference]: Without dead ends: 71 [2021-08-27 07:51:53,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:51:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-27 07:51:53,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-08-27 07:51:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.441860465116279) internal successors, (62), 57 states have internal predecessors, (62), 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) [2021-08-27 07:51:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-08-27 07:51:53,324 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 18 [2021-08-27 07:51:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:53,324 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-08-27 07:51:53,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-08-27 07:51:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-08-27 07:51:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 07:51:53,325 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:53,325 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:53,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:53,548 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 [2021-08-27 07:51:53,549 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash 421781908, now seen corresponding path program 1 times [2021-08-27 07:51:53,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:53,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690182239] [2021-08-27 07:51:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:53,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:51:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:51:53,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:53,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690182239] [2021-08-27 07:51:53,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690182239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:53,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:53,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 07:51:53,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909289119] [2021-08-27 07:51:53,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:51:53,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:51:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:51:53,677 INFO L87 Difference]: Start difference. First operand 69 states and 73 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) [2021-08-27 07:51:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:53,881 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-08-27 07:51:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:51:53,881 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 23 [2021-08-27 07:51:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:53,882 INFO L225 Difference]: With dead ends: 68 [2021-08-27 07:51:53,882 INFO L226 Difference]: Without dead ends: 68 [2021-08-27 07:51:53,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:51:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-27 07:51:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-08-27 07:51:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 56 states have internal predecessors, (61), 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) [2021-08-27 07:51:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-08-27 07:51:53,888 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 23 [2021-08-27 07:51:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:53,888 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-08-27 07:51:53,888 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) [2021-08-27 07:51:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-08-27 07:51:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 07:51:53,889 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:53,889 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:53,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 07:51:53,889 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash 421781909, now seen corresponding path program 1 times [2021-08-27 07:51:53,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:53,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960707579] [2021-08-27 07:51:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:53,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:51:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:53,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:53,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960707579] [2021-08-27 07:51:53,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960707579] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:53,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175416557] [2021-08-27 07:51:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:53,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:53,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:54,000 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) [2021-08-27 07:51:54,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 07:51:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:54,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 07:51:54,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:54,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175416557] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:54,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:54,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2021-08-27 07:51:54,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241910710] [2021-08-27 07:51:54,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:51:54,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:51:54,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:51:54,245 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-08-27 07:51:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:54,471 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-08-27 07:51:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:51:54,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 7 states have internal predecessors, (21), 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 23 [2021-08-27 07:51:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:54,472 INFO L225 Difference]: With dead ends: 73 [2021-08-27 07:51:54,472 INFO L226 Difference]: Without dead ends: 73 [2021-08-27 07:51:54,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:51:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-27 07:51:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-08-27 07:51:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 46 states have (on average 1.391304347826087) internal successors, (64), 59 states have internal predecessors, (64), 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) [2021-08-27 07:51:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-08-27 07:51:54,476 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 23 [2021-08-27 07:51:54,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:54,476 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-08-27 07:51:54,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-08-27 07:51:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-08-27 07:51:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 07:51:54,477 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:54,477 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:54,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:54,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:54,695 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:54,695 INFO L82 PathProgramCache]: Analyzing trace with hash -16477362, now seen corresponding path program 2 times [2021-08-27 07:51:54,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:54,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622765314] [2021-08-27 07:51:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:54,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:51:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:54,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:54,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622765314] [2021-08-27 07:51:54,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622765314] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:54,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793022930] [2021-08-27 07:51:54,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:54,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:54,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:54,848 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) [2021-08-27 07:51:54,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 07:51:54,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:51:54,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:54,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 07:51:55,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:55,044 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-08-27 07:51:55,044 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 3 case distinctions, treesize of input 15 treesize of output 31 [2021-08-27 07:51:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 07:51:55,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793022930] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:55,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:51:55,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2021-08-27 07:51:55,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845999048] [2021-08-27 07:51:55,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:51:55,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:51:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:51:55,306 INFO L87 Difference]: Start difference. First operand 71 states and 75 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) [2021-08-27 07:51:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:55,413 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-08-27 07:51:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:51:55,414 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 26 [2021-08-27 07:51:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:55,414 INFO L225 Difference]: With dead ends: 78 [2021-08-27 07:51:55,415 INFO L226 Difference]: Without dead ends: 78 [2021-08-27 07:51:55,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 143.3ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-08-27 07:51:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-27 07:51:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-08-27 07:51:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 48 states have (on average 1.375) 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) [2021-08-27 07:51:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-08-27 07:51:55,419 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 26 [2021-08-27 07:51:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:55,419 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-08-27 07:51:55,420 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) [2021-08-27 07:51:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-08-27 07:51:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 07:51:55,420 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:55,421 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:55,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:55,625 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 [2021-08-27 07:51:55,626 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:55,627 INFO L82 PathProgramCache]: Analyzing trace with hash -510798198, now seen corresponding path program 1 times [2021-08-27 07:51:55,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:55,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259385440] [2021-08-27 07:51:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:55,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:51:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:55,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:55,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259385440] [2021-08-27 07:51:55,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259385440] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:55,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249560517] [2021-08-27 07:51:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:55,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:55,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:55,725 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) [2021-08-27 07:51:55,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 07:51:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:55,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 07:51:55,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:55,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249560517] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:55,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:55,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-08-27 07:51:55,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710588278] [2021-08-27 07:51:55,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:51:55,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:55,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:51:55,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:51:55,959 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-08-27 07:51:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:56,099 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-08-27 07:51:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:51:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 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 27 [2021-08-27 07:51:56,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:56,103 INFO L225 Difference]: With dead ends: 78 [2021-08-27 07:51:56,103 INFO L226 Difference]: Without dead ends: 78 [2021-08-27 07:51:56,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:51:56,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-27 07:51:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-08-27 07:51:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 64 states have internal predecessors, (69), 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) [2021-08-27 07:51:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-08-27 07:51:56,120 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 27 [2021-08-27 07:51:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:56,120 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-08-27 07:51:56,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-08-27 07:51:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-08-27 07:51:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 07:51:56,121 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:56,121 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:56,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:56,336 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 [2021-08-27 07:51:56,337 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:51:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1612905533, now seen corresponding path program 2 times [2021-08-27 07:51:56,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:56,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008766002] [2021-08-27 07:51:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:56,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:56,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:51:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:56,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:56,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008766002] [2021-08-27 07:51:56,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008766002] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:56,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912546166] [2021-08-27 07:51:56,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:56,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:56,447 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) [2021-08-27 07:51:56,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 07:51:56,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:51:56,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:56,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 07:51:56,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:56,664 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-27 07:51:56,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 101 treesize of output 119 [2021-08-27 07:52:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 07:52:04,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912546166] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:04,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:52:04,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2021-08-27 07:52:04,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666190159] [2021-08-27 07:52:04,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:52:04,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:52:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:52:04,567 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:52:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:04,598 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2021-08-27 07:52:04,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:52:04,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-08-27 07:52:04,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:04,599 INFO L225 Difference]: With dead ends: 75 [2021-08-27 07:52:04,599 INFO L226 Difference]: Without dead ends: 75 [2021-08-27 07:52:04,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:52:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-27 07:52:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-08-27 07:52:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 63 states have internal predecessors, (68), 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) [2021-08-27 07:52:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-08-27 07:52:04,603 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 30 [2021-08-27 07:52:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:04,603 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-08-27 07:52:04,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:52:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-08-27 07:52:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 07:52:04,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:04,604 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:04,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:04,816 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 [2021-08-27 07:52:04,817 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:04,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1612905532, now seen corresponding path program 1 times [2021-08-27 07:52:04,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:04,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212237286] [2021-08-27 07:52:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:04,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:52:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:04,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:04,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212237286] [2021-08-27 07:52:04,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212237286] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:04,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580548920] [2021-08-27 07:52:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:04,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:04,929 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) [2021-08-27 07:52:04,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 07:52:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:52:05,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:05,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580548920] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:05,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:05,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-08-27 07:52:05,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005496521] [2021-08-27 07:52:05,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:52:05,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:52:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:52:05,273 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-08-27 07:52:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:05,396 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-08-27 07:52:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:52:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 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 30 [2021-08-27 07:52:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:05,397 INFO L225 Difference]: With dead ends: 80 [2021-08-27 07:52:05,398 INFO L226 Difference]: Without dead ends: 80 [2021-08-27 07:52:05,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:52:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-27 07:52:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-08-27 07:52:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 66 states have internal predecessors, (71), 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) [2021-08-27 07:52:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-08-27 07:52:05,404 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 30 [2021-08-27 07:52:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:05,404 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-08-27 07:52:05,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-08-27 07:52:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-08-27 07:52:05,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 07:52:05,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:05,407 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:05,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:05,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:05,608 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:05,609 INFO L82 PathProgramCache]: Analyzing trace with hash 532455403, now seen corresponding path program 2 times [2021-08-27 07:52:05,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:05,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246630960] [2021-08-27 07:52:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:05,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:52:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:52:05,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:05,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246630960] [2021-08-27 07:52:05,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246630960] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:05,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976364054] [2021-08-27 07:52:05,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:05,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:05,736 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) [2021-08-27 07:52:05,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 07:52:06,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:52:06,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:06,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 07:52:06,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:06,060 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-08-27 07:52:06,061 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 3 case distinctions, treesize of input 33 treesize of output 45 [2021-08-27 07:52:06,072 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 103 treesize of output 99 [2021-08-27 07:52:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-27 07:52:07,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976364054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:07,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:52:07,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2021-08-27 07:52:07,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856098854] [2021-08-27 07:52:07,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:52:07,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:52:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:07,076 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:52:07,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:07,143 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-08-27 07:52:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:52:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-08-27 07:52:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:07,148 INFO L225 Difference]: With dead ends: 81 [2021-08-27 07:52:07,148 INFO L226 Difference]: Without dead ends: 81 [2021-08-27 07:52:07,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 83.9ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:07,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-27 07:52:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-08-27 07:52:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 55 states have (on average 1.309090909090909) internal successors, (72), 67 states have internal predecessors, (72), 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) [2021-08-27 07:52:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-08-27 07:52:07,154 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 33 [2021-08-27 07:52:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:07,154 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-08-27 07:52:07,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:52:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-08-27 07:52:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-27 07:52:07,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:07,155 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:07,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:07,360 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,SelfDestructingSolverStorable10 [2021-08-27 07:52:07,361 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:07,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1353588722, now seen corresponding path program 1 times [2021-08-27 07:52:07,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:07,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321788149] [2021-08-27 07:52:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:07,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:52:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:52:07,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:07,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321788149] [2021-08-27 07:52:07,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321788149] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:07,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301853871] [2021-08-27 07:52:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:07,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:07,466 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) [2021-08-27 07:52:07,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 07:52:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:07,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 07:52:07,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:52:07,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301853871] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:07,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:07,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-08-27 07:52:07,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309188492] [2021-08-27 07:52:07,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:52:07,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:07,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:52:07,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:52:07,869 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-08-27 07:52:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:07,943 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-08-27 07:52:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 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 37 [2021-08-27 07:52:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:07,944 INFO L225 Difference]: With dead ends: 84 [2021-08-27 07:52:07,944 INFO L226 Difference]: Without dead ends: 84 [2021-08-27 07:52:07,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-27 07:52:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-08-27 07:52:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.293103448275862) internal successors, (75), 70 states have internal predecessors, (75), 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) [2021-08-27 07:52:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-08-27 07:52:07,947 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 37 [2021-08-27 07:52:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:07,947 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-08-27 07:52:07,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-08-27 07:52:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-08-27 07:52:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 07:52:07,948 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:07,948 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:07,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:08,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:08,161 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:08,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:08,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1899534855, now seen corresponding path program 2 times [2021-08-27 07:52:08,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:08,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5910552] [2021-08-27 07:52:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:08,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:08,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:52:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:52:08,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:08,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5910552] [2021-08-27 07:52:08,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5910552] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:08,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538138614] [2021-08-27 07:52:08,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:08,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:08,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:08,276 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) [2021-08-27 07:52:08,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 07:52:08,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:52:08,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:08,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-27 07:52:08,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:08,649 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-08-27 07:52:08,649 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 3 case distinctions, treesize of input 15 treesize of output 31 [2021-08-27 07:52:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-08-27 07:52:08,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538138614] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:08,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:52:08,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2021-08-27 07:52:08,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263608507] [2021-08-27 07:52:08,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:52:08,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:08,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:52:08,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-08-27 07:52:08,957 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-08-27 07:52:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:09,096 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2021-08-27 07:52:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:52:09,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 40 [2021-08-27 07:52:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:09,097 INFO L225 Difference]: With dead ends: 83 [2021-08-27 07:52:09,097 INFO L226 Difference]: Without dead ends: 83 [2021-08-27 07:52:09,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-08-27 07:52:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-27 07:52:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-08-27 07:52:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 69 states have internal predecessors, (74), 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) [2021-08-27 07:52:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-08-27 07:52:09,100 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 40 [2021-08-27 07:52:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:09,100 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-08-27 07:52:09,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-08-27 07:52:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-08-27 07:52:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 07:52:09,101 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:09,101 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:09,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-08-27 07:52:09,313 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,SelfDestructingSolverStorable12 [2021-08-27 07:52:09,313 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1243961614, now seen corresponding path program 1 times [2021-08-27 07:52:09,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:09,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836695303] [2021-08-27 07:52:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:09,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:52:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:52:09,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:09,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836695303] [2021-08-27 07:52:09,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836695303] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:09,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819612003] [2021-08-27 07:52:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:09,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:09,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:09,442 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) [2021-08-27 07:52:09,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 07:52:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:09,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:52:09,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:52:09,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819612003] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:09,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:09,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-08-27 07:52:09,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928891056] [2021-08-27 07:52:09,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:52:09,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:52:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:09,942 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 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) [2021-08-27 07:52:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:10,081 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2021-08-27 07:52:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:52:10,081 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 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 41 [2021-08-27 07:52:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:10,082 INFO L225 Difference]: With dead ends: 86 [2021-08-27 07:52:10,082 INFO L226 Difference]: Without dead ends: 86 [2021-08-27 07:52:10,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:10,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-08-27 07:52:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-08-27 07:52:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 72 states have internal predecessors, (77), 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) [2021-08-27 07:52:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-08-27 07:52:10,085 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 41 [2021-08-27 07:52:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:10,085 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-08-27 07:52:10,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 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) [2021-08-27 07:52:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-08-27 07:52:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-27 07:52:10,086 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:10,086 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:10,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-08-27 07:52:10,297 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,SelfDestructingSolverStorable13 [2021-08-27 07:52:10,297 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:10,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1366408299, now seen corresponding path program 2 times [2021-08-27 07:52:10,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:10,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663781844] [2021-08-27 07:52:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:10,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 07:52:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:52:10,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:10,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663781844] [2021-08-27 07:52:10,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663781844] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:10,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281515261] [2021-08-27 07:52:10,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:10,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:10,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:10,451 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) [2021-08-27 07:52:10,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 07:52:10,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:52:10,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:10,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 07:52:10,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:10,871 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-08-27 07:52:10,872 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 3 case distinctions, treesize of input 33 treesize of output 45 [2021-08-27 07:52:10,874 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 67 treesize of output 65 [2021-08-27 07:52:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-08-27 07:52:12,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281515261] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:12,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:12,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2021-08-27 07:52:12,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350802692] [2021-08-27 07:52:12,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 07:52:12,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 07:52:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-08-27 07:52:12,347 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:12,890 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-08-27 07:52:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 07:52:12,891 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2021-08-27 07:52:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:12,891 INFO L225 Difference]: With dead ends: 88 [2021-08-27 07:52:12,891 INFO L226 Difference]: Without dead ends: 88 [2021-08-27 07:52:12,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 422.4ms TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2021-08-27 07:52:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-27 07:52:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-08-27 07:52:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 72 states have internal predecessors, (77), 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) [2021-08-27 07:52:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-08-27 07:52:12,894 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 44 [2021-08-27 07:52:12,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:12,894 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-08-27 07:52:12,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-08-27 07:52:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-27 07:52:12,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:12,895 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:12,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:13,095 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,SelfDestructingSolverStorable14 [2021-08-27 07:52:13,096 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:13,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:13,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1242834180, now seen corresponding path program 1 times [2021-08-27 07:52:13,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:13,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364112666] [2021-08-27 07:52:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:13,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-27 07:52:13,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:13,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364112666] [2021-08-27 07:52:13,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364112666] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:13,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006954995] [2021-08-27 07:52:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:13,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:13,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:13,193 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) [2021-08-27 07:52:13,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-27 07:52:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:13,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 07:52:13,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 07:52:13,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006954995] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:13,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:13,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 15 [2021-08-27 07:52:13,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920902644] [2021-08-27 07:52:13,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:52:13,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:52:13,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:52:13,862 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 13 states have internal predecessors, (57), 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) [2021-08-27 07:52:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:13,979 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-08-27 07:52:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 07:52:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 13 states have internal predecessors, (57), 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 51 [2021-08-27 07:52:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:13,980 INFO L225 Difference]: With dead ends: 98 [2021-08-27 07:52:13,980 INFO L226 Difference]: Without dead ends: 98 [2021-08-27 07:52:13,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:52:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-27 07:52:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2021-08-27 07:52:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 80 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) [2021-08-27 07:52:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-08-27 07:52:13,983 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 51 [2021-08-27 07:52:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:13,983 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-08-27 07:52:13,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 13 states have internal predecessors, (57), 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) [2021-08-27 07:52:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-08-27 07:52:13,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-27 07:52:13,984 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:13,984 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-08-27 07:52:14,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:14,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-27 07:52:14,193 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash 968105693, now seen corresponding path program 2 times [2021-08-27 07:52:14,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:14,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678294228] [2021-08-27 07:52:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:14,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:14,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 07:52:14,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:14,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678294228] [2021-08-27 07:52:14,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678294228] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:14,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318719935] [2021-08-27 07:52:14,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:14,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:14,373 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) [2021-08-27 07:52:14,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 07:52:14,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:52:14,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:14,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 07:52:14,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:14,953 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-27 07:52:14,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 76 [2021-08-27 07:52:29,477 INFO L354 Elim1Store]: treesize reduction 114, result has 35.2 percent of original size [2021-08-27 07:52:29,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 107 [2021-08-27 07:52:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-08-27 07:52:30,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318719935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:30,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:52:30,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2021-08-27 07:52:30,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107992769] [2021-08-27 07:52:30,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:52:30,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:52:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-08-27 07:52:30,621 INFO L87 Difference]: Start difference. First operand 92 states and 96 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) [2021-08-27 07:52:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:30,771 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-08-27 07:52:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:52:30,771 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 59 [2021-08-27 07:52:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:30,772 INFO L225 Difference]: With dead ends: 91 [2021-08-27 07:52:30,772 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 07:52:30,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 208.9ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-08-27 07:52:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 07:52:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-08-27 07:52:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.2) 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) [2021-08-27 07:52:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-08-27 07:52:30,775 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 59 [2021-08-27 07:52:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:30,775 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-08-27 07:52:30,775 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) [2021-08-27 07:52:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-08-27 07:52:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-27 07:52:30,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:30,776 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-08-27 07:52:30,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:30,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:30,990 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:30,990 INFO L82 PathProgramCache]: Analyzing trace with hash 968105694, now seen corresponding path program 1 times [2021-08-27 07:52:30,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:30,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106406366] [2021-08-27 07:52:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:30,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 07:52:31,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:31,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106406366] [2021-08-27 07:52:31,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106406366] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:31,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630194788] [2021-08-27 07:52:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:31,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:31,147 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) [2021-08-27 07:52:31,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-27 07:52:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:31,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 07:52:31,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 07:52:31,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630194788] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:31,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:31,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-08-27 07:52:31,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139867693] [2021-08-27 07:52:31,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 07:52:31,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:31,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 07:52:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:52:31,966 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-08-27 07:52:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:32,065 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-08-27 07:52:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 07:52:32,066 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 12 states have internal predecessors, (47), 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 59 [2021-08-27 07:52:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:32,067 INFO L225 Difference]: With dead ends: 94 [2021-08-27 07:52:32,067 INFO L226 Difference]: Without dead ends: 94 [2021-08-27 07:52:32,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:52:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-27 07:52:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-08-27 07:52:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 82 states have internal predecessors, (87), 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) [2021-08-27 07:52:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-08-27 07:52:32,071 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 59 [2021-08-27 07:52:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:32,073 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-08-27 07:52:32,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 12 states have internal predecessors, (47), 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) [2021-08-27 07:52:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-08-27 07:52:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-27 07:52:32,074 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:32,074 INFO L512 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] [2021-08-27 07:52:32,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:32,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-27 07:52:32,283 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:32,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:32,284 INFO L82 PathProgramCache]: Analyzing trace with hash -317183977, now seen corresponding path program 2 times [2021-08-27 07:52:32,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:32,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380724307] [2021-08-27 07:52:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:32,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:32,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:32,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:32,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380724307] [2021-08-27 07:52:32,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380724307] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:32,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484275194] [2021-08-27 07:52:32,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:32,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:32,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:32,372 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) [2021-08-27 07:52:32,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-27 07:52:33,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:52:33,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:33,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 07:52:33,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:33,092 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-08-27 07:52:33,092 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 3 case distinctions, treesize of input 33 treesize of output 45 [2021-08-27 07:52:33,094 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 67 treesize of output 65 [2021-08-27 07:52:34,712 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-08-27 07:52:34,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 38 [2021-08-27 07:52:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-08-27 07:52:34,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484275194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:34,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:52:34,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-08-27 07:52:34,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370541724] [2021-08-27 07:52:34,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:52:34,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:52:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:34,791 INFO L87 Difference]: Start difference. First operand 94 states and 98 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) [2021-08-27 07:52:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:34,914 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-08-27 07:52:34,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:52:34,915 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 62 [2021-08-27 07:52:34,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:34,915 INFO L225 Difference]: With dead ends: 101 [2021-08-27 07:52:34,916 INFO L226 Difference]: Without dead ends: 101 [2021-08-27 07:52:34,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:34,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-08-27 07:52:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2021-08-27 07:52:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 84 states have internal predecessors, (89), 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) [2021-08-27 07:52:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2021-08-27 07:52:34,919 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 62 [2021-08-27 07:52:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:34,919 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2021-08-27 07:52:34,919 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) [2021-08-27 07:52:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2021-08-27 07:52:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-27 07:52:34,920 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:34,920 INFO L512 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, 1] [2021-08-27 07:52:34,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:35,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:35,133 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1242768695, now seen corresponding path program 1 times [2021-08-27 07:52:35,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:35,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040246094] [2021-08-27 07:52:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:35,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-08-27 07:52:35,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:35,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040246094] [2021-08-27 07:52:35,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040246094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:35,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:52:35,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 07:52:35,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635459834] [2021-08-27 07:52:35,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:52:35,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:52:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:35,199 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 07:52:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:35,282 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2021-08-27 07:52:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:52:35,283 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), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 63 [2021-08-27 07:52:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:35,283 INFO L225 Difference]: With dead ends: 95 [2021-08-27 07:52:35,284 INFO L226 Difference]: Without dead ends: 95 [2021-08-27 07:52:35,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:52:35,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-27 07:52:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-08-27 07:52:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 83 states have internal predecessors, (88), 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) [2021-08-27 07:52:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2021-08-27 07:52:35,287 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 63 [2021-08-27 07:52:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:35,287 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2021-08-27 07:52:35,287 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), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 07:52:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2021-08-27 07:52:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-27 07:52:35,288 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:35,288 INFO L512 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, 1] [2021-08-27 07:52:35,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-27 07:52:35,288 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1242768694, now seen corresponding path program 1 times [2021-08-27 07:52:35,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:35,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965484887] [2021-08-27 07:52:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:35,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:35,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:35,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965484887] [2021-08-27 07:52:35,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965484887] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:35,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558471208] [2021-08-27 07:52:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:35,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:35,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:35,381 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) [2021-08-27 07:52:35,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-27 07:52:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:36,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 07:52:36,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:36,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558471208] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:36,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:36,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2021-08-27 07:52:36,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530158492] [2021-08-27 07:52:36,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:52:36,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:36,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:52:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:36,306 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-08-27 07:52:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:36,405 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-08-27 07:52:36,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:52:36,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 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 63 [2021-08-27 07:52:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:36,406 INFO L225 Difference]: With dead ends: 104 [2021-08-27 07:52:36,406 INFO L226 Difference]: Without dead ends: 104 [2021-08-27 07:52:36,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:52:36,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-27 07:52:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2021-08-27 07:52:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.1625) internal successors, (93), 88 states have internal predecessors, (93), 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) [2021-08-27 07:52:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2021-08-27 07:52:36,408 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 63 [2021-08-27 07:52:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:36,409 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2021-08-27 07:52:36,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-08-27 07:52:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2021-08-27 07:52:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-27 07:52:36,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:36,410 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:36,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:36,631 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash 446605052, now seen corresponding path program 2 times [2021-08-27 07:52:36,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:36,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160982874] [2021-08-27 07:52:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:36,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:36,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:36,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:36,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160982874] [2021-08-27 07:52:36,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160982874] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:36,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371292473] [2021-08-27 07:52:36,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:36,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:36,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:36,745 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) [2021-08-27 07:52:36,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 07:52:37,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:52:37,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:37,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:52:37,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:37,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:52:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-08-27 07:52:37,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371292473] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:37,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:52:37,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2021-08-27 07:52:37,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145113481] [2021-08-27 07:52:37,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:52:37,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:52:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:52:37,708 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:52:37,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:37,729 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2021-08-27 07:52:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:52:37,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2021-08-27 07:52:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:37,730 INFO L225 Difference]: With dead ends: 103 [2021-08-27 07:52:37,730 INFO L226 Difference]: Without dead ends: 103 [2021-08-27 07:52:37,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:52:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-27 07:52:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-08-27 07:52:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 89 states have internal predecessors, (94), 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) [2021-08-27 07:52:37,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-08-27 07:52:37,733 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 68 [2021-08-27 07:52:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:37,733 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-08-27 07:52:37,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 07:52:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-08-27 07:52:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-27 07:52:37,734 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:37,734 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 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] [2021-08-27 07:52:37,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:37,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:37,954 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash -860049249, now seen corresponding path program 1 times [2021-08-27 07:52:37,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:37,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561581802] [2021-08-27 07:52:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:37,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:38,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 07:52:38,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:38,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561581802] [2021-08-27 07:52:38,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561581802] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:38,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694992148] [2021-08-27 07:52:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:38,051 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:38,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:38,052 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) [2021-08-27 07:52:38,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-27 07:52:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:38,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 07:52:38,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 07:52:39,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694992148] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:39,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:39,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-08-27 07:52:39,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179468238] [2021-08-27 07:52:39,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:52:39,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:39,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:52:39,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:52:39,099 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-08-27 07:52:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:39,205 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-08-27 07:52:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:52:39,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 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 72 [2021-08-27 07:52:39,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:39,206 INFO L225 Difference]: With dead ends: 110 [2021-08-27 07:52:39,206 INFO L226 Difference]: Without dead ends: 110 [2021-08-27 07:52:39,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:52:39,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-27 07:52:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2021-08-27 07:52:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 94 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) [2021-08-27 07:52:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-08-27 07:52:39,209 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 72 [2021-08-27 07:52:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:39,210 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-08-27 07:52:39,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-08-27 07:52:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-08-27 07:52:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-08-27 07:52:39,210 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:39,211 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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] [2021-08-27 07:52:39,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:39,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:39,421 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1537768621, now seen corresponding path program 2 times [2021-08-27 07:52:39,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:39,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870270990] [2021-08-27 07:52:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:39,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 07:52:39,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:39,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870270990] [2021-08-27 07:52:39,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870270990] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:39,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215989217] [2021-08-27 07:52:39,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:39,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:39,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:39,541 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) [2021-08-27 07:52:39,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-27 07:52:40,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:52:40,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:40,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:52:40,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 07:52:40,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215989217] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:40,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:40,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-08-27 07:52:40,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973702721] [2021-08-27 07:52:40,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:52:40,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:40,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:52:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:52:40,638 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-08-27 07:52:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:40,707 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2021-08-27 07:52:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:52:40,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 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 77 [2021-08-27 07:52:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:40,708 INFO L225 Difference]: With dead ends: 115 [2021-08-27 07:52:40,708 INFO L226 Difference]: Without dead ends: 115 [2021-08-27 07:52:40,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:52:40,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-27 07:52:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2021-08-27 07:52:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 91 states have (on average 1.1428571428571428) internal successors, (104), 99 states have internal predecessors, (104), 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) [2021-08-27 07:52:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-08-27 07:52:40,712 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 77 [2021-08-27 07:52:40,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:40,712 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-08-27 07:52:40,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-08-27 07:52:40,713 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-08-27 07:52:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-08-27 07:52:40,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:40,714 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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] [2021-08-27 07:52:40,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:40,936 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,SelfDestructingSolverStorable23 [2021-08-27 07:52:40,937 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1675622049, now seen corresponding path program 3 times [2021-08-27 07:52:40,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:40,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428720551] [2021-08-27 07:52:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:40,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:40,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 07:52:41,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:41,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428720551] [2021-08-27 07:52:41,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428720551] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:41,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012551892] [2021-08-27 07:52:41,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 07:52:41,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:41,075 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) [2021-08-27 07:52:41,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-27 07:52:42,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 07:52:42,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:42,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-27 07:52:42,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:42,127 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-08-27 07:52:42,128 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 [2021-08-27 07:52:51,816 INFO L354 Elim1Store]: treesize reduction 72, result has 40.5 percent of original size [2021-08-27 07:52:51,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 98 [2021-08-27 07:52:51,829 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:52:51,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 85 [2021-08-27 07:52:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-08-27 07:52:52,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012551892] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:52,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:52,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-08-27 07:52:52,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61033294] [2021-08-27 07:52:52,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 07:52:52,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 07:52:52,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-08-27 07:52:52,051 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:52:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:52,737 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2021-08-27 07:52:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 07:52:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 82 [2021-08-27 07:52:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:52,740 INFO L225 Difference]: With dead ends: 132 [2021-08-27 07:52:52,740 INFO L226 Difference]: Without dead ends: 132 [2021-08-27 07:52:52,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 588.1ms TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-08-27 07:52:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-27 07:52:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-08-27 07:52:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 100 states have (on average 1.13) internal successors, (113), 108 states have internal predecessors, (113), 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) [2021-08-27 07:52:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2021-08-27 07:52:52,744 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 82 [2021-08-27 07:52:52,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:52,744 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2021-08-27 07:52:52,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:52:52,744 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2021-08-27 07:52:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-27 07:52:52,745 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:52,745 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 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] [2021-08-27 07:52:52,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:52,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-27 07:52:52,961 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:52,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1670701492, now seen corresponding path program 1 times [2021-08-27 07:52:52,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:52,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997243953] [2021-08-27 07:52:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:52,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:53,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-08-27 07:52:53,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:53,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997243953] [2021-08-27 07:52:53,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997243953] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:53,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657363384] [2021-08-27 07:52:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:53,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:53,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:53,093 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) [2021-08-27 07:52:53,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-27 07:52:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:54,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:52:54,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-08-27 07:52:54,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657363384] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:54,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:54,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-08-27 07:52:54,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27555487] [2021-08-27 07:52:54,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:52:54,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:52:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:54,539 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 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) [2021-08-27 07:52:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:54,618 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2021-08-27 07:52:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 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 88 [2021-08-27 07:52:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:54,620 INFO L225 Difference]: With dead ends: 129 [2021-08-27 07:52:54,620 INFO L226 Difference]: Without dead ends: 129 [2021-08-27 07:52:54,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 55.4ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-27 07:52:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2021-08-27 07:52:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.1238095238095238) internal successors, (118), 113 states have internal predecessors, (118), 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) [2021-08-27 07:52:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-08-27 07:52:54,625 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 88 [2021-08-27 07:52:54,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:54,626 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-08-27 07:52:54,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 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) [2021-08-27 07:52:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-08-27 07:52:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-08-27 07:52:54,627 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:54,627 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 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] [2021-08-27 07:52:54,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:54,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-27 07:52:54,841 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:54,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:54,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2102210110, now seen corresponding path program 2 times [2021-08-27 07:52:54,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:54,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998555490] [2021-08-27 07:52:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:54,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-08-27 07:52:54,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:54,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998555490] [2021-08-27 07:52:54,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998555490] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:54,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138568331] [2021-08-27 07:52:54,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:54,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:54,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:54,984 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) [2021-08-27 07:52:54,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-27 07:52:56,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:52:56,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:56,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 07:52:56,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:56,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:52:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-08-27 07:52:56,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138568331] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:56,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:56,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2021-08-27 07:52:56,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708238713] [2021-08-27 07:52:56,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 07:52:56,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:56,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 07:52:56,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-08-27 07:52:56,472 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:52:56,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:56,780 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2021-08-27 07:52:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 07:52:56,781 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 93 [2021-08-27 07:52:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:56,781 INFO L225 Difference]: With dead ends: 133 [2021-08-27 07:52:56,781 INFO L226 Difference]: Without dead ends: 133 [2021-08-27 07:52:56,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 267.5ms TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-08-27 07:52:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-08-27 07:52:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-08-27 07:52:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 117 states have internal predecessors, (122), 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) [2021-08-27 07:52:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2021-08-27 07:52:56,785 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 93 [2021-08-27 07:52:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:56,785 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2021-08-27 07:52:56,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:52:56,785 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2021-08-27 07:52:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-08-27 07:52:56,786 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:56,786 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:56,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:57,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:57,001 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash 757483543, now seen corresponding path program 4 times [2021-08-27 07:52:57,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:57,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750032135] [2021-08-27 07:52:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:57,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-08-27 07:52:57,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:57,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750032135] [2021-08-27 07:52:57,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750032135] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:57,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358533846] [2021-08-27 07:52:57,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 07:52:57,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:57,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:57,151 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) [2021-08-27 07:52:57,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-27 07:52:58,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 07:52:58,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 07:52:58,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-08-27 07:52:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358533846] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:58,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-08-27 07:52:58,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774606417] [2021-08-27 07:52:58,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 07:52:58,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 07:52:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:58,731 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 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) [2021-08-27 07:52:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:58,850 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2021-08-27 07:52:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:52:58,851 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 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 102 [2021-08-27 07:52:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:58,852 INFO L225 Difference]: With dead ends: 138 [2021-08-27 07:52:58,852 INFO L226 Difference]: Without dead ends: 138 [2021-08-27 07:52:58,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:58,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-27 07:52:58,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2021-08-27 07:52:58,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 115 states have (on average 1.1043478260869566) internal successors, (127), 122 states have internal predecessors, (127), 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) [2021-08-27 07:52:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2021-08-27 07:52:58,855 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 102 [2021-08-27 07:52:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:58,855 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2021-08-27 07:52:58,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 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) [2021-08-27 07:52:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2021-08-27 07:52:58,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-08-27 07:52:58,856 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:58,856 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:58,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:59,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-27 07:52:59,065 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:52:59,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:59,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1289746523, now seen corresponding path program 5 times [2021-08-27 07:52:59,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:59,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277818158] [2021-08-27 07:52:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:59,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:52:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:59,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-08-27 07:52:59,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:59,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277818158] [2021-08-27 07:52:59,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277818158] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:59,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052246562] [2021-08-27 07:52:59,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 07:52:59,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:59,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:59,228 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) [2021-08-27 07:52:59,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-27 07:53:01,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-08-27 07:53:01,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:01,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 07:53:01,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-08-27 07:53:01,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052246562] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:01,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:01,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-08-27 07:53:01,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844180457] [2021-08-27 07:53:01,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 07:53:01,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:01,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 07:53:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:53:01,334 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 12 states have internal predecessors, (67), 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) [2021-08-27 07:53:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:01,444 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2021-08-27 07:53:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 07:53:01,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 12 states have internal predecessors, (67), 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 107 [2021-08-27 07:53:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:01,445 INFO L225 Difference]: With dead ends: 139 [2021-08-27 07:53:01,445 INFO L226 Difference]: Without dead ends: 139 [2021-08-27 07:53:01,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:53:01,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-27 07:53:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-08-27 07:53:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 120 states have (on average 1.1) internal successors, (132), 127 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) [2021-08-27 07:53:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2021-08-27 07:53:01,449 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 107 [2021-08-27 07:53:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:01,449 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2021-08-27 07:53:01,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 12 states have internal predecessors, (67), 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) [2021-08-27 07:53:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2021-08-27 07:53:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-08-27 07:53:01,450 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:01,450 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:01,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:01,652 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,SelfDestructingSolverStorable28 [2021-08-27 07:53:01,653 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:01,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:01,653 INFO L82 PathProgramCache]: Analyzing trace with hash -524955433, now seen corresponding path program 6 times [2021-08-27 07:53:01,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:01,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701282265] [2021-08-27 07:53:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:01,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-08-27 07:53:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 207 proven. 37 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:53:02,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:02,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701282265] [2021-08-27 07:53:02,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701282265] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:02,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107642268] [2021-08-27 07:53:02,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 07:53:02,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:02,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:02,093 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) [2021-08-27 07:53:02,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-27 07:53:03,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-08-27 07:53:03,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:03,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-27 07:53:03,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:03,371 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-08-27 07:53:03,371 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 3 case distinctions, treesize of input 33 treesize of output 45 [2021-08-27 07:53:03,373 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 67 treesize of output 65 [2021-08-27 07:53:06,223 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-08-27 07:53:06,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 38 [2021-08-27 07:53:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-08-27 07:53:06,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107642268] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:53:06,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:53:06,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 28 [2021-08-27 07:53:06,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573550819] [2021-08-27 07:53:06,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:53:06,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:53:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-08-27 07:53:06,740 INFO L87 Difference]: Start difference. First operand 139 states and 143 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) [2021-08-27 07:53:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:06,979 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2021-08-27 07:53:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:53:06,979 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 112 [2021-08-27 07:53:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:06,980 INFO L225 Difference]: With dead ends: 138 [2021-08-27 07:53:06,980 INFO L226 Difference]: Without dead ends: 138 [2021-08-27 07:53:06,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 581.8ms TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 07:53:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-27 07:53:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-08-27 07:53:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 119 states have (on average 1.0924369747899159) internal successors, (130), 125 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) [2021-08-27 07:53:06,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-08-27 07:53:06,983 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 112 [2021-08-27 07:53:06,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:06,984 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-08-27 07:53:06,984 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) [2021-08-27 07:53:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-08-27 07:53:06,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-08-27 07:53:06,984 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:06,984 INFO L512 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] [2021-08-27 07:53:07,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:07,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:07,189 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1387314960, now seen corresponding path program 1 times [2021-08-27 07:53:07,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:07,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795782155] [2021-08-27 07:53:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:07,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:07,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:07,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795782155] [2021-08-27 07:53:07,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795782155] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:07,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558809458] [2021-08-27 07:53:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:07,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:07,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:07,357 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) [2021-08-27 07:53:07,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-27 07:53:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:08,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 07:53:08,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:09,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558809458] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:09,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:09,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2021-08-27 07:53:09,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000617945] [2021-08-27 07:53:09,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:53:09,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:53:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:53:09,190 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:09,254 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2021-08-27 07:53:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:53:09,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 117 [2021-08-27 07:53:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:09,255 INFO L225 Difference]: With dead ends: 146 [2021-08-27 07:53:09,255 INFO L226 Difference]: Without dead ends: 146 [2021-08-27 07:53:09,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:53:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-27 07:53:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2021-08-27 07:53:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 124 states have (on average 1.0887096774193548) internal successors, (135), 130 states have internal predecessors, (135), 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) [2021-08-27 07:53:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2021-08-27 07:53:09,258 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 117 [2021-08-27 07:53:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:09,259 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2021-08-27 07:53:09,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2021-08-27 07:53:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-08-27 07:53:09,260 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:09,260 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:09,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:09,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:09,473 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:09,473 INFO L82 PathProgramCache]: Analyzing trace with hash -575903494, now seen corresponding path program 2 times [2021-08-27 07:53:09,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:09,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694483966] [2021-08-27 07:53:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:09,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:09,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:09,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694483966] [2021-08-27 07:53:09,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694483966] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:09,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26300165] [2021-08-27 07:53:09,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:53:09,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:09,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:09,629 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) [2021-08-27 07:53:09,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-27 07:53:11,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:53:11,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:11,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 07:53:11,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:11,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26300165] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:11,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:11,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2021-08-27 07:53:11,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854607695] [2021-08-27 07:53:11,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:53:11,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:53:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:53:11,514 INFO L87 Difference]: Start difference. First operand 142 states and 146 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:11,605 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2021-08-27 07:53:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:53:11,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 122 [2021-08-27 07:53:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:11,606 INFO L225 Difference]: With dead ends: 151 [2021-08-27 07:53:11,606 INFO L226 Difference]: Without dead ends: 151 [2021-08-27 07:53:11,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:53:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-27 07:53:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-08-27 07:53:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 129 states have (on average 1.0852713178294573) internal successors, (140), 135 states have internal predecessors, (140), 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) [2021-08-27 07:53:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2021-08-27 07:53:11,609 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 122 [2021-08-27 07:53:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:11,609 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2021-08-27 07:53:11,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2021-08-27 07:53:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-08-27 07:53:11,610 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:11,610 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 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, 1] [2021-08-27 07:53:11,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:11,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:11,811 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:11,811 INFO L82 PathProgramCache]: Analyzing trace with hash -371170992, now seen corresponding path program 3 times [2021-08-27 07:53:11,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:11,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515322205] [2021-08-27 07:53:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:11,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:11,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:11,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:11,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515322205] [2021-08-27 07:53:11,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515322205] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:11,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300343158] [2021-08-27 07:53:11,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 07:53:11,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:11,977 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) [2021-08-27 07:53:12,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-27 07:53:13,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-27 07:53:13,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:13,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:53:13,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:13,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300343158] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:13,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:13,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2021-08-27 07:53:13,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758839782] [2021-08-27 07:53:13,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:53:13,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:53:13,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:53:13,879 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:13,962 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2021-08-27 07:53:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:53:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 127 [2021-08-27 07:53:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:13,963 INFO L225 Difference]: With dead ends: 156 [2021-08-27 07:53:13,963 INFO L226 Difference]: Without dead ends: 156 [2021-08-27 07:53:13,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:53:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-27 07:53:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2021-08-27 07:53:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 134 states have (on average 1.0820895522388059) internal successors, (145), 140 states have internal predecessors, (145), 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) [2021-08-27 07:53:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-08-27 07:53:13,967 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 127 [2021-08-27 07:53:13,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:13,967 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-08-27 07:53:13,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-08-27 07:53:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-08-27 07:53:13,968 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:13,968 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:13,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:14,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:14,185 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1244147386, now seen corresponding path program 4 times [2021-08-27 07:53:14,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:14,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087146811] [2021-08-27 07:53:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:14,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:14,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:14,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087146811] [2021-08-27 07:53:14,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087146811] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:14,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179307991] [2021-08-27 07:53:14,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 07:53:14,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:14,359 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) [2021-08-27 07:53:14,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-27 07:53:16,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 07:53:16,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:16,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 07:53:16,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:16,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179307991] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:16,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:16,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2021-08-27 07:53:16,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556895762] [2021-08-27 07:53:16,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:53:16,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:16,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:53:16,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:53:16,653 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:16,712 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2021-08-27 07:53:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:53:16,712 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 132 [2021-08-27 07:53:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:16,713 INFO L225 Difference]: With dead ends: 161 [2021-08-27 07:53:16,713 INFO L226 Difference]: Without dead ends: 161 [2021-08-27 07:53:16,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:53:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-27 07:53:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2021-08-27 07:53:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 139 states have (on average 1.079136690647482) internal successors, (150), 145 states have internal predecessors, (150), 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) [2021-08-27 07:53:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2021-08-27 07:53:16,716 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 132 [2021-08-27 07:53:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:16,716 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2021-08-27 07:53:16,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2021-08-27 07:53:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-08-27 07:53:16,717 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:16,718 INFO L512 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] [2021-08-27 07:53:16,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-08-27 07:53:16,928 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,SelfDestructingSolverStorable33 [2021-08-27 07:53:16,929 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:16,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2070269040, now seen corresponding path program 5 times [2021-08-27 07:53:16,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:16,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868242342] [2021-08-27 07:53:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:16,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:17,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:17,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868242342] [2021-08-27 07:53:17,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868242342] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:17,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32257700] [2021-08-27 07:53:17,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 07:53:17,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:17,108 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) [2021-08-27 07:53:17,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-27 07:53:30,261 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-08-27 07:53:30,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:30,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:53:30,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:30,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32257700] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:30,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:30,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2021-08-27 07:53:30,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641068839] [2021-08-27 07:53:30,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 07:53:30,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 07:53:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:53:30,566 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:30,677 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2021-08-27 07:53:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:53:30,677 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 137 [2021-08-27 07:53:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:30,678 INFO L225 Difference]: With dead ends: 166 [2021-08-27 07:53:30,678 INFO L226 Difference]: Without dead ends: 166 [2021-08-27 07:53:30,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:53:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-27 07:53:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-08-27 07:53:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 144 states have (on average 1.0763888888888888) internal successors, (155), 150 states have internal predecessors, (155), 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) [2021-08-27 07:53:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2021-08-27 07:53:30,681 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 137 [2021-08-27 07:53:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:30,682 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2021-08-27 07:53:30,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2021-08-27 07:53:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-08-27 07:53:30,682 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:30,683 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:30,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-08-27 07:53:30,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:30,885 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1106756730, now seen corresponding path program 6 times [2021-08-27 07:53:30,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:30,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203087500] [2021-08-27 07:53:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:30,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:31,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:31,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:31,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203087500] [2021-08-27 07:53:31,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203087500] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:31,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655717729] [2021-08-27 07:53:31,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 07:53:31,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:31,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:31,063 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:53:31,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-27 07:53:33,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-08-27 07:53:33,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:33,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 07:53:33,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:34,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655717729] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:34,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:34,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 14 [2021-08-27 07:53:34,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959229089] [2021-08-27 07:53:34,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 07:53:34,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:34,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 07:53:34,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:53:34,066 INFO L87 Difference]: Start difference. First operand 162 states and 166 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:34,207 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2021-08-27 07:53:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:53:34,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 142 [2021-08-27 07:53:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:34,208 INFO L225 Difference]: With dead ends: 171 [2021-08-27 07:53:34,208 INFO L226 Difference]: Without dead ends: 171 [2021-08-27 07:53:34,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:53:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-08-27 07:53:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-08-27 07:53:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 149 states have (on average 1.0738255033557047) internal successors, (160), 155 states have internal predecessors, (160), 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) [2021-08-27 07:53:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2021-08-27 07:53:34,212 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 142 [2021-08-27 07:53:34,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:34,212 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2021-08-27 07:53:34,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2021-08-27 07:53:34,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-08-27 07:53:34,213 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:34,213 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:34,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:34,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:34,429 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:34,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:34,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1612565040, now seen corresponding path program 7 times [2021-08-27 07:53:34,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:34,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762000885] [2021-08-27 07:53:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:34,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:34,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:34,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762000885] [2021-08-27 07:53:34,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762000885] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:34,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868465852] [2021-08-27 07:53:34,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 07:53:34,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:34,621 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:53:34,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-27 07:53:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:36,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 07:53:36,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:36,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868465852] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:36,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:36,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2021-08-27 07:53:36,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875241890] [2021-08-27 07:53:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:53:36,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:53:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:53:36,638 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:36,759 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2021-08-27 07:53:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:53:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 147 [2021-08-27 07:53:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:36,761 INFO L225 Difference]: With dead ends: 176 [2021-08-27 07:53:36,761 INFO L226 Difference]: Without dead ends: 176 [2021-08-27 07:53:36,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:53:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-08-27 07:53:36,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2021-08-27 07:53:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 154 states have (on average 1.0714285714285714) internal successors, (165), 160 states have internal predecessors, (165), 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) [2021-08-27 07:53:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 176 transitions. [2021-08-27 07:53:36,764 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 176 transitions. Word has length 147 [2021-08-27 07:53:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:36,765 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 176 transitions. [2021-08-27 07:53:36,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 176 transitions. [2021-08-27 07:53:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-08-27 07:53:36,766 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:36,766 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:53:36,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:36,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-27 07:53:36,981 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:36,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:36,981 INFO L82 PathProgramCache]: Analyzing trace with hash -896062918, now seen corresponding path program 8 times [2021-08-27 07:53:36,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:36,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703783600] [2021-08-27 07:53:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:36,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:37,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:37,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:53:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:53:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:53:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:37,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:53:37,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703783600] [2021-08-27 07:53:37,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703783600] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:37,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516289858] [2021-08-27 07:53:37,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:53:37,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:53:37,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:53:37,189 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:53:37,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-08-27 07:53:39,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:53:39,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:53:39,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 07:53:39,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:53:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-08-27 07:53:39,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516289858] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:53:39,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:53:39,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 16 [2021-08-27 07:53:39,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069576540] [2021-08-27 07:53:39,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 07:53:39,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:53:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 07:53:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:53:39,434 INFO L87 Difference]: Start difference. First operand 172 states and 176 transitions. Second operand has 16 states, 15 states have (on average 5.2) internal successors, (78), 13 states have internal predecessors, (78), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:39,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:53:39,530 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2021-08-27 07:53:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 07:53:39,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 13 states have internal predecessors, (78), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 152 [2021-08-27 07:53:39,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:53:39,531 INFO L225 Difference]: With dead ends: 177 [2021-08-27 07:53:39,531 INFO L226 Difference]: Without dead ends: 177 [2021-08-27 07:53:39,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:53:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-08-27 07:53:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-08-27 07:53:39,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 159 states have (on average 1.069182389937107) internal successors, (170), 165 states have internal predecessors, (170), 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) [2021-08-27 07:53:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-08-27 07:53:39,534 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 152 [2021-08-27 07:53:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:53:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-08-27 07:53:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 13 states have internal predecessors, (78), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-08-27 07:53:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-08-27 07:53:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-08-27 07:53:39,535 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:53:39,535 INFO L512 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] [2021-08-27 07:53:39,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-08-27 07:53:39,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-27 07:53:39,752 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-08-27 07:53:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:53:39,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1136420880, now seen corresponding path program 9 times [2021-08-27 07:53:39,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:53:39,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543720568] [2021-08-27 07:53:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:53:39,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:53:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:53:39,830 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 07:53:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:53:39,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 07:53:39,940 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 07:53:39,940 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location getNumbers4Err0REQUIRES_VIOLATION [2021-08-27 07:53:39,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err1REQUIRES_VIOLATION [2021-08-27 07:53:39,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err2REQUIRES_VIOLATION [2021-08-27 07:53:39,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err3REQUIRES_VIOLATION [2021-08-27 07:53:39,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 07:53:39,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 07:53:39,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:53:39,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err0REQUIRES_VIOLATION [2021-08-27 07:53:39,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err1REQUIRES_VIOLATION [2021-08-27 07:53:39,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err2REQUIRES_VIOLATION [2021-08-27 07:53:39,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err3REQUIRES_VIOLATION [2021-08-27 07:53:39,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err0REQUIRES_VIOLATION [2021-08-27 07:53:39,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err1REQUIRES_VIOLATION [2021-08-27 07:53:39,943 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err2REQUIRES_VIOLATION [2021-08-27 07:53:39,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err3REQUIRES_VIOLATION [2021-08-27 07:53:39,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr0REQUIRES_VIOLATION [2021-08-27 07:53:39,944 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr1REQUIRES_VIOLATION [2021-08-27 07:53:39,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-27 07:53:39,951 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:53:40,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:53:40 BoogieIcfgContainer [2021-08-27 07:53:40,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:53:40,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:53:40,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:53:40,053 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:53:40,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:49" (3/4) ... [2021-08-27 07:53:40,055 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 07:53:40,125 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 07:53:40,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:53:40,127 INFO L168 Benchmark]: Toolchain (without parser) took 111693.83 ms. Allocated memory was 52.4 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 29.9 MB in the beginning and 791.3 MB in the end (delta: -761.5 MB). Peak memory consumption was 526.5 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:40,127 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory was 34.9 MB in the beginning and 34.8 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:53:40,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.39 ms. Allocated memory is still 52.4 MB. Free memory was 29.7 MB in the beginning and 33.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:40,128 INFO L168 Benchmark]: Boogie Preprocessor took 64.70 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 50.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:40,129 INFO L168 Benchmark]: RCFGBuilder took 500.64 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 42.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:40,132 INFO L168 Benchmark]: TraceAbstraction took 110878.46 ms. Allocated memory was 67.1 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 42.0 MB in the beginning and 799.7 MB in the end (delta: -757.8 MB). Peak memory consumption was 517.8 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:40,132 INFO L168 Benchmark]: Witness Printer took 73.46 ms. Allocated memory is still 1.3 GB. Free memory was 799.7 MB in the beginning and 791.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 07:53:40,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 52.4 MB. Free memory was 34.9 MB in the beginning and 34.8 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.39 ms. Allocated memory is still 52.4 MB. Free memory was 29.7 MB in the beginning and 33.5 MB in the end (delta: -3.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.70 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 50.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 500.64 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 42.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 110878.46 ms. Allocated memory was 67.1 MB in the beginning and 1.3 GB in the end (delta: 1.3 GB). Free memory was 42.0 MB in the beginning and 799.7 MB in the end (delta: -757.8 MB). Peak memory consumption was 517.8 MB. Max. memory is 16.1 GB. * Witness Printer took 73.46 ms. Allocated memory is still 1.3 GB. Free memory was 799.7 MB in the beginning and 791.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 38]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] static int array[10]; [L17] static int numbers2[10]; [L36] static int numbers4[10]; VAL [\old(array)=null, \old(array)=null, \old(numbers2)=null, \old(numbers2)=null, \old(numbers4)=null, \old(numbers4)=null, array={13:0}, numbers2={15:0}, numbers4={17:0}] [L45] CALL getNumbers4() VAL [array={13:0}, numbers2={15:0}, numbers4={17:0}] [L35] CALL, EXPR getNumbers3() VAL [array={13:0}, numbers2={15:0}, numbers4={17:0}] [L25] CALL, EXPR getNumbers2() VAL [array={13:0}, numbers2={15:0}, numbers4={17:0}] [L16] CALL, EXPR getNumbers() VAL [array={13:0}, numbers2={15:0}, numbers4={17:0}] [L8] int i = 0; VAL [array={13:0}, i=0, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=0, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=1, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=1, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=1, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=2, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=2, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=2, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=3, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=3, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=3, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=4, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=4, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=4, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=5, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=5, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=5, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=6, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=6, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=6, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=7, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=7, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=7, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=8, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=8, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=8, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=9, numbers2={15:0}, numbers4={17:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=9, numbers2={15:0}, numbers4={17:0}] [L9] array[i] = i VAL [array={13:0}, i=9, numbers2={15:0}, numbers4={17:0}] [L8] ++i VAL [array={13:0}, i=10, numbers2={15:0}, numbers4={17:0}] [L8] COND FALSE !(i < 10) VAL [array={13:0}, i=10, numbers2={15:0}, numbers4={17:0}] [L12] return array; VAL [\result={13:0}, array={13:0}, i=10, numbers2={15:0}, numbers4={17:0}] [L16] RET, EXPR getNumbers() VAL [array={13:0}, getNumbers()={13:0}, numbers2={15:0}, numbers4={17:0}] [L16] int* numbers = getNumbers(); [L18] int i = 0; VAL [array={13:0}, i=0, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=0, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=0] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=0, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=0] [L18] ++i VAL [array={13:0}, i=1, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=1, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=1, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=1] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=1, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=1] [L18] ++i VAL [array={13:0}, i=2, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=2, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=2, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=2] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=2, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=2] [L18] ++i VAL [array={13:0}, i=3, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=3, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=3, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=3] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=3, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=3] [L18] ++i VAL [array={13:0}, i=4, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=4, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=4, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=4] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=4, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=4] [L18] ++i VAL [array={13:0}, i=5, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=5, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=5, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=5] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=5, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=5] [L18] ++i VAL [array={13:0}, i=6, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=6, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=6, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=6] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=6, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=6] [L18] ++i VAL [array={13:0}, i=7, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=7, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=7, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=7] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=7, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=7] [L18] ++i VAL [array={13:0}, i=8, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=8, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=8, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=8] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=8, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=8] [L18] ++i VAL [array={13:0}, i=9, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=9, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=9, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=9] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=9, numbers={13:0}, numbers2={15:0}, numbers4={17:0}, numbers[i]=9] [L18] ++i VAL [array={13:0}, i=10, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L18] COND FALSE !(i < 10) VAL [array={13:0}, i=10, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L21] return numbers2; VAL [\result={15:0}, array={13:0}, i=10, numbers={13:0}, numbers2={15:0}, numbers4={17:0}] [L25] RET, EXPR getNumbers2() VAL [array={13:0}, getNumbers2()={15:0}, numbers2={15:0}, numbers4={17:0}] [L25] int* numbers = getNumbers2(); [L26] int numbers3[10]; [L27] int i = 0; VAL [array={13:0}, i=0, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=0, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=0] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=0, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=0] [L27] ++i VAL [array={13:0}, i=1, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=1, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=1, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=1] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=1, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=1] [L27] ++i VAL [array={13:0}, i=2, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=2, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=2, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=2] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=2, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=2] [L27] ++i VAL [array={13:0}, i=3, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=3, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=3, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=3] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=3, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=3] [L27] ++i VAL [array={13:0}, i=4, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=4, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=4, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=4] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=4, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=4] [L27] ++i VAL [array={13:0}, i=5, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=5, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=5, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=5] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=5, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=5] [L27] ++i VAL [array={13:0}, i=6, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=6, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=6, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=6] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=6, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=6] [L27] ++i VAL [array={13:0}, i=7, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=7, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=7, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=7] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=7, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=7] [L27] ++i VAL [array={13:0}, i=8, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=8, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=8, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=8] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=8, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=8] [L27] ++i VAL [array={13:0}, i=9, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=9, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=9, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=9] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=9, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}, numbers[i]=9] [L27] ++i VAL [array={13:0}, i=10, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L27] COND FALSE !(i < 10) VAL [array={13:0}, i=10, numbers={15:0}, numbers2={15:0}, numbers3={11:0}, numbers4={17:0}] [L31] return numbers3; [L31] return numbers3; VAL [\result={11:0}, array={13:0}, i=10, numbers={15:0}, numbers2={15:0}, numbers4={17:0}] [L35] RET, EXPR getNumbers3() VAL [array={13:0}, getNumbers3()={11:0}, numbers2={15:0}, numbers4={17:0}] [L35] int* numbers = getNumbers3(); [L37] int i = 0; VAL [array={13:0}, i=0, numbers={11:0}, numbers2={15:0}, numbers4={17:0}] [L37] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers={11:0}, numbers2={15:0}, numbers4={17:0}] [L38] numbers[i] - UnprovableResult [Line: 38]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 48]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 48]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 28]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 70 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 110719.5ms, OverallIterations: 39, TraceHistogramMax: 10, EmptinessCheckTime: 32.1ms, AutomataDifference: 5940.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2045 SDtfs, 1569 SDslu, 6181 SDs, 0 SdLazy, 4337 SolverSat, 396 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3156.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3105 GetRequests, 2648 SyntacticMatches, 0 SemanticMatches, 457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 4799.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=38, InterpolantAutomatonStates: 347, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 155.4ms AutomataMinimizationTime, 38 MinimizatonAttempts, 123 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 418.3ms SsaConstructionTime, 14887.4ms SatisfiabilityAnalysisTime, 53309.2ms InterpolantComputationTime, 5337 NumberOfCodeBlocks, 4917 NumberOfCodeBlocksAsserted, 116 NumberOfCheckSat, 5108 ConstructedInterpolants, 437 QuantifiedInterpolants, 27099 SizeOfPredicates, 86 NumberOfNonLiveVariables, 9314 ConjunctsInSsa, 389 ConjunctsInUnsatCore, 72 InterpolantComputations, 13 PerfectInterpolantSequences, 10581/13951 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-27 07:53:40,191 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...