./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg --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 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-28 09:37:48,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:37:48,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:37:48,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:37:48,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:37:48,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:37:48,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:37:48,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:37:48,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:37:48,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:37:48,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:37:48,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:37:48,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:37:48,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:37:48,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:37:48,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:37:48,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:37:48,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:37:48,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:37:48,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:37:48,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:37:48,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:37:48,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:37:48,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:37:48,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:37:48,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:37:48,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:37:48,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:37:48,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:37:48,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:37:48,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:37:48,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:37:48,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:37:48,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:37:48,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:37:48,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:37:48,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:37:48,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:37:48,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:37:48,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:37:48,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:37:48,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:37:48,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:37:48,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:37:48,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:37:48,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:37:48,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:37:48,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:37:48,524 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:37:48,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:37:48,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:37:48,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:37:48,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:37:48,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:37:48,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:37:48,527 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:37:48,527 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:37:48,527 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:37:48,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:37:48,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:37:48,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:37:48,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:37:48,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:37:48,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:37:48,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:37:48,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:48,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:37:48,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:37:48,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:37:48,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:37:48,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:37:48,532 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac [2021-10-28 09:37:48,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:37:48,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:37:48,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:37:48,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:37:48,896 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:37:48,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-10-28 09:37:49,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/data/a5ec6fe95/54a6efd804dd4b25aafbef3c5e25360e/FLAG72a7641cf [2021-10-28 09:37:49,533 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:37:49,534 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-10-28 09:37:49,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/data/a5ec6fe95/54a6efd804dd4b25aafbef3c5e25360e/FLAG72a7641cf [2021-10-28 09:37:49,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/data/a5ec6fe95/54a6efd804dd4b25aafbef3c5e25360e [2021-10-28 09:37:49,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:37:49,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:37:49,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:49,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:37:49,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:37:49,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:49" (1/1) ... [2021-10-28 09:37:49,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6360b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:49, skipping insertion in model container [2021-10-28 09:37:49,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:37:49" (1/1) ... [2021-10-28 09:37:49,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:37:49,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:37:50,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:50,135 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:37:50,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:37:50,173 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:37:50,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50 WrapperNode [2021-10-28 09:37:50,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:37:50,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:37:50,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:37:50,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:37:50,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:37:50,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:37:50,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:37:50,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:37:50,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (1/1) ... [2021-10-28 09:37:50,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:37:50,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:50,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:37:50,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:37:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:37:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:37:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-10-28 09:37:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2021-10-28 09:37:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2021-10-28 09:37:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2021-10-28 09:37:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:37:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-10-28 09:37:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-10-28 09:37:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:37:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2021-10-28 09:37:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:37:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2021-10-28 09:37:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:37:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:37:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2021-10-28 09:37:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:37:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:37:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:37:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:37:50,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:37:50,790 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:37:50,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:50 BoogieIcfgContainer [2021-10-28 09:37:50,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:37:50,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:37:50,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:37:50,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:37:50,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:37:49" (1/3) ... [2021-10-28 09:37:50,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6805aea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:50, skipping insertion in model container [2021-10-28 09:37:50,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:37:50" (2/3) ... [2021-10-28 09:37:50,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6805aea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:37:50, skipping insertion in model container [2021-10-28 09:37:50,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:50" (3/3) ... [2021-10-28 09:37:50,801 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2021-10-28 09:37:50,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:37:50,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-10-28 09:37:50,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:37:50,866 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, mAutomataTypeConcurrency=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 [2021-10-28 09:37:50,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-28 09:37:50,887 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) [2021-10-28 09:37:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:37:50,895 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:50,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:50,896 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468390, now seen corresponding path program 1 times [2021-10-28 09:37:50,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:50,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392454618] [2021-10-28 09:37:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:50,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:51,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:51,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:51,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392454618] [2021-10-28 09:37:51,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392454618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:51,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:51,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:37:51,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258926043] [2021-10-28 09:37:51,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:37:51,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:51,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:37:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:37:51,366 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) [2021-10-28 09:37:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:51,709 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-10-28 09:37:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:37:51,711 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 [2021-10-28 09:37:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:51,724 INFO L225 Difference]: With dead ends: 87 [2021-10-28 09:37:51,725 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 09:37:51,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:37:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 09:37:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2021-10-28 09:37:51,792 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) [2021-10-28 09:37:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-10-28 09:37:51,798 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2021-10-28 09:37:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:51,798 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-10-28 09:37:51,799 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) [2021-10-28 09:37:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-10-28 09:37:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:37:51,800 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:51,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:51,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:37:51,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:51,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468391, now seen corresponding path program 1 times [2021-10-28 09:37:51,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:51,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221227011] [2021-10-28 09:37:51,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:51,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:52,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:52,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221227011] [2021-10-28 09:37:52,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221227011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:52,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:52,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:37:52,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540977878] [2021-10-28 09:37:52,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:37:52,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:37:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:37:52,133 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) [2021-10-28 09:37:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:52,387 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-10-28 09:37:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:37:52,388 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 [2021-10-28 09:37:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:52,392 INFO L225 Difference]: With dead ends: 69 [2021-10-28 09:37:52,393 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 09:37:52,395 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:37:52,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 09:37:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-10-28 09:37:52,409 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) [2021-10-28 09:37:52,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-10-28 09:37:52,418 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 12 [2021-10-28 09:37:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:52,418 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-10-28 09:37:52,419 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) [2021-10-28 09:37:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-10-28 09:37:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:37:52,420 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:52,420 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:52,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:37:52,421 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1757784526, now seen corresponding path program 1 times [2021-10-28 09:37:52,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:52,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447588699] [2021-10-28 09:37:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:52,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:52,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:52,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:52,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447588699] [2021-10-28 09:37:52,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447588699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:52,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179675294] [2021-10-28 09:37:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:52,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:52,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:52,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:52,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:37:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:52,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:37:52,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:52,952 INFO L354 Elim1Store]: treesize reduction 89, result has 18.3 percent of original size [2021-10-28 09:37:52,954 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 [2021-10-28 09:37:52,993 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:37:52,994 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 [2021-10-28 09:37:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:54,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179675294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:54,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:37:54,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-28 09:37:54,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879990948] [2021-10-28 09:37:54,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:37:54,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:37:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:37:54,155 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) [2021-10-28 09:37:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:54,520 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-10-28 09:37:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:37:54,521 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 [2021-10-28 09:37:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:54,522 INFO L225 Difference]: With dead ends: 72 [2021-10-28 09:37:54,522 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 09:37:54,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:37:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 09:37:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-10-28 09:37:54,527 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) [2021-10-28 09:37:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-28 09:37:54,531 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 15 [2021-10-28 09:37:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:54,532 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-28 09:37:54,532 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) [2021-10-28 09:37:54,532 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-10-28 09:37:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:37:54,533 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:54,533 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:54,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:54,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:54,734 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:54,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1917592711, now seen corresponding path program 2 times [2021-10-28 09:37:54,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:54,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844765865] [2021-10-28 09:37:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:54,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:54,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:54,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844765865] [2021-10-28 09:37:54,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844765865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:54,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966817410] [2021-10-28 09:37:54,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:37:54,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:54,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:54,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:54,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:37:55,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:37:55,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:37:55,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:37:55,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:55,126 INFO L354 Elim1Store]: treesize reduction 89, result has 18.3 percent of original size [2021-10-28 09:37:55,127 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 [2021-10-28 09:37:55,136 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:37:55,137 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 [2021-10-28 09:37:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:56,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966817410] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:56,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:56,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2021-10-28 09:37:56,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11548626] [2021-10-28 09:37:56,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:37:56,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:56,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:37:56,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:37:56,201 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) [2021-10-28 09:37:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:56,329 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-10-28 09:37:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:37:56,329 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 [2021-10-28 09:37:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:56,331 INFO L225 Difference]: With dead ends: 71 [2021-10-28 09:37:56,331 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 09:37:56,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:37:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 09:37:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-10-28 09:37:56,337 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) [2021-10-28 09:37:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-10-28 09:37:56,338 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 18 [2021-10-28 09:37:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:56,339 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-10-28 09:37:56,339 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) [2021-10-28 09:37:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-10-28 09:37:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:37:56,340 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:56,341 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:56,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 09:37:56,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:56,557 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 421781908, now seen corresponding path program 1 times [2021-10-28 09:37:56,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:56,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960996139] [2021-10-28 09:37:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:56,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:56,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:37:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:37:56,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:56,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960996139] [2021-10-28 09:37:56,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960996139] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:56,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:37:56,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:37:56,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011392036] [2021-10-28 09:37:56,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:37:56,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:37:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:37:56,707 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) [2021-10-28 09:37:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:56,945 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-10-28 09:37:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:37:56,946 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 [2021-10-28 09:37:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:56,949 INFO L225 Difference]: With dead ends: 68 [2021-10-28 09:37:56,949 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 09:37:56,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:37:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 09:37:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-28 09:37:56,960 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) [2021-10-28 09:37:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-10-28 09:37:56,963 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 23 [2021-10-28 09:37:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:56,964 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-10-28 09:37:56,964 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) [2021-10-28 09:37:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-10-28 09:37:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:37:56,965 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:56,965 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:56,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:37:56,966 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 421781909, now seen corresponding path program 1 times [2021-10-28 09:37:56,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:56,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19987178] [2021-10-28 09:37:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:56,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:37:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:57,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:57,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19987178] [2021-10-28 09:37:57,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19987178] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:57,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873948741] [2021-10-28 09:37:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:57,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:57,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:57,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:57,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:37:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:57,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:37:57,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:57,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873948741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:57,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:37:57,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2021-10-28 09:37:57,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319701790] [2021-10-28 09:37:57,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:37:57,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:37:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:37:57,322 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) [2021-10-28 09:37:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:57,546 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-10-28 09:37:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:37:57,546 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 [2021-10-28 09:37:57,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:57,548 INFO L225 Difference]: With dead ends: 73 [2021-10-28 09:37:57,548 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 09:37:57,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:37:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 09:37:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-10-28 09:37:57,553 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) [2021-10-28 09:37:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-28 09:37:57,554 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 23 [2021-10-28 09:37:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:57,555 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-28 09:37:57,555 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) [2021-10-28 09:37:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-10-28 09:37:57,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:37:57,556 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:57,556 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:57,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:57,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:37:57,769 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -16477362, now seen corresponding path program 2 times [2021-10-28 09:37:57,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:57,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706066187] [2021-10-28 09:37:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:57,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:57,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:57,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:37:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:57,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:57,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706066187] [2021-10-28 09:37:57,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706066187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:57,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116194048] [2021-10-28 09:37:57,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:37:57,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:57,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:57,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:37:58,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:37:58,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:37:58,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 09:37:58,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:58,140 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-28 09:37:58,145 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 [2021-10-28 09:37:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-28 09:37:58,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116194048] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:37:58,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:37:58,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2021-10-28 09:37:58,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152801017] [2021-10-28 09:37:58,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:37:58,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:37:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:37:58,444 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) [2021-10-28 09:37:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:58,563 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-10-28 09:37:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:37:58,564 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 [2021-10-28 09:37:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:58,565 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:37:58,565 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:37:58,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:37:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:37:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-10-28 09:37:58,569 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) [2021-10-28 09:37:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-10-28 09:37:58,570 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 26 [2021-10-28 09:37:58,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:58,570 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-10-28 09:37:58,570 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) [2021-10-28 09:37:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-10-28 09:37:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:37:58,571 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:58,571 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:58,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:58,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 09:37:58,785 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash -510798198, now seen corresponding path program 1 times [2021-10-28 09:37:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:58,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171186019] [2021-10-28 09:37:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:58,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:37:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:58,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:58,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171186019] [2021-10-28 09:37:58,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171186019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:58,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537590189] [2021-10-28 09:37:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:58,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:58,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:58,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:58,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:37:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:59,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:37:59,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:59,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537590189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:59,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:37:59,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-10-28 09:37:59,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609576820] [2021-10-28 09:37:59,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:37:59,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:37:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:37:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:37:59,130 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) [2021-10-28 09:37:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:37:59,271 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-10-28 09:37:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:37:59,272 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 [2021-10-28 09:37:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:37:59,277 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:37:59,277 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:37:59,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:37:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:37:59,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-28 09:37:59,295 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) [2021-10-28 09:37:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-10-28 09:37:59,296 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 27 [2021-10-28 09:37:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:37:59,297 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-10-28 09:37:59,297 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) [2021-10-28 09:37:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-10-28 09:37:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:37:59,298 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:37:59,298 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:37:59,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:37:59,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:59,522 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:37:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:37:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1612905533, now seen corresponding path program 2 times [2021-10-28 09:37:59,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:37:59,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167037317] [2021-10-28 09:37:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:37:59,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:37:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:37:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:37:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:37:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:37:59,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:37:59,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167037317] [2021-10-28 09:37:59,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167037317] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:37:59,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51538624] [2021-10-28 09:37:59,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:37:59,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:37:59,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:37:59,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:37:59,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:37:59,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:37:59,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:37:59,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:37:59,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:37:59,894 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-28 09:37:59,894 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 [2021-10-28 09:38:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 09:38:11,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51538624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:11,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:11,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2021-10-28 09:38:11,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053396218] [2021-10-28 09:38:11,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:38:11,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:11,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:38:11,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:38:11,217 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) [2021-10-28 09:38:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:11,279 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2021-10-28 09:38:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:38:11,279 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 [2021-10-28 09:38:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:11,280 INFO L225 Difference]: With dead ends: 75 [2021-10-28 09:38:11,280 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 09:38:11,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:38:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 09:38:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-28 09:38:11,284 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) [2021-10-28 09:38:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-10-28 09:38:11,286 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 30 [2021-10-28 09:38:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:11,286 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-10-28 09:38:11,286 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) [2021-10-28 09:38:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-10-28 09:38:11,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:38:11,288 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:11,288 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:11,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:11,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:11,509 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:11,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1612905532, now seen corresponding path program 1 times [2021-10-28 09:38:11,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:11,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593967152] [2021-10-28 09:38:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:11,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:38:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:11,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:11,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593967152] [2021-10-28 09:38:11,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593967152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:11,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586449733] [2021-10-28 09:38:11,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:11,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:11,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:11,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:38:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:11,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:38:11,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:12,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586449733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:12,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:12,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-10-28 09:38:12,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369318677] [2021-10-28 09:38:12,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:38:12,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:38:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:12,015 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) [2021-10-28 09:38:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:12,166 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-10-28 09:38:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:38:12,166 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 [2021-10-28 09:38:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:12,169 INFO L225 Difference]: With dead ends: 80 [2021-10-28 09:38:12,169 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 09:38:12,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:38:12,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 09:38:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-10-28 09:38:12,177 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) [2021-10-28 09:38:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-10-28 09:38:12,178 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 30 [2021-10-28 09:38:12,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:12,178 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-10-28 09:38:12,179 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) [2021-10-28 09:38:12,179 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-10-28 09:38:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:38:12,186 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:12,186 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:12,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:12,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:12,405 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 532455403, now seen corresponding path program 2 times [2021-10-28 09:38:12,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:12,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000277495] [2021-10-28 09:38:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:12,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:38:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:38:12,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:12,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000277495] [2021-10-28 09:38:12,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000277495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:12,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059808116] [2021-10-28 09:38:12,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:12,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:12,526 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:12,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:38:12,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:38:12,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:12,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:38:12,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:12,882 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 09:38:12,883 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 [2021-10-28 09:38:12,888 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 [2021-10-28 09:38:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-28 09:38:14,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059808116] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:14,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:14,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2021-10-28 09:38:14,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863320733] [2021-10-28 09:38:14,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:38:14,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:38:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:38:14,024 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) [2021-10-28 09:38:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:14,107 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-10-28 09:38:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:38:14,107 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 [2021-10-28 09:38:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:14,108 INFO L225 Difference]: With dead ends: 81 [2021-10-28 09:38:14,108 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 09:38:14,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:38:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 09:38:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-10-28 09:38:14,112 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) [2021-10-28 09:38:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-10-28 09:38:14,112 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 33 [2021-10-28 09:38:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:14,113 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-10-28 09:38:14,113 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) [2021-10-28 09:38:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-10-28 09:38:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:38:14,114 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:14,115 INFO L513 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] [2021-10-28 09:38:14,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-28 09:38:14,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:14,321 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1353588722, now seen corresponding path program 1 times [2021-10-28 09:38:14,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:14,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277591490] [2021-10-28 09:38:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:14,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:14,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:38:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:38:14,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:14,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277591490] [2021-10-28 09:38:14,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277591490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:14,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008825767] [2021-10-28 09:38:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:14,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:14,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:14,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:14,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:38:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:14,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:38:14,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:38:14,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008825767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:14,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:14,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-10-28 09:38:14,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414758883] [2021-10-28 09:38:14,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:38:14,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:38:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:38:14,932 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) [2021-10-28 09:38:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:15,017 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-10-28 09:38:15,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:38:15,018 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 [2021-10-28 09:38:15,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:15,019 INFO L225 Difference]: With dead ends: 84 [2021-10-28 09:38:15,019 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 09:38:15,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:38:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 09:38:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-10-28 09:38:15,022 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) [2021-10-28 09:38:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-10-28 09:38:15,023 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 37 [2021-10-28 09:38:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:15,023 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-10-28 09:38:15,024 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) [2021-10-28 09:38:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-10-28 09:38:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 09:38:15,025 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:15,025 INFO L513 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] [2021-10-28 09:38:15,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:15,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 09:38:15,238 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1899534855, now seen corresponding path program 2 times [2021-10-28 09:38:15,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:15,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533949837] [2021-10-28 09:38:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:15,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:38:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:38:15,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:15,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533949837] [2021-10-28 09:38:15,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533949837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:15,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571037642] [2021-10-28 09:38:15,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:15,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:15,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:15,361 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:15,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:38:15,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:38:15,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:15,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 09:38:15,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:15,780 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-28 09:38:15,780 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 [2021-10-28 09:38:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-28 09:38:16,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571037642] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:16,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:16,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2021-10-28 09:38:16,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481664449] [2021-10-28 09:38:16,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:38:16,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:38:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:38:16,189 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) [2021-10-28 09:38:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:16,364 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2021-10-28 09:38:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:38:16,365 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 [2021-10-28 09:38:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:16,366 INFO L225 Difference]: With dead ends: 83 [2021-10-28 09:38:16,366 INFO L226 Difference]: Without dead ends: 83 [2021-10-28 09:38:16,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:38:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-28 09:38:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-10-28 09:38:16,370 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) [2021-10-28 09:38:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-10-28 09:38:16,371 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 40 [2021-10-28 09:38:16,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:16,372 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-10-28 09:38:16,372 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) [2021-10-28 09:38:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-10-28 09:38:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:38:16,373 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:16,373 INFO L513 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] [2021-10-28 09:38:16,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:16,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:38:16,586 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1243961614, now seen corresponding path program 1 times [2021-10-28 09:38:16,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:16,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145404462] [2021-10-28 09:38:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:16,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:38:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:38:16,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:16,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145404462] [2021-10-28 09:38:16,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145404462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:16,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92396856] [2021-10-28 09:38:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:16,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:16,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:16,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:38:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:17,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:38:17,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:38:17,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92396856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:17,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:17,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-10-28 09:38:17,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627293036] [2021-10-28 09:38:17,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:38:17,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:17,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:38:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:38:17,158 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) [2021-10-28 09:38:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:17,315 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2021-10-28 09:38:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:38:17,315 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 [2021-10-28 09:38:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:17,316 INFO L225 Difference]: With dead ends: 86 [2021-10-28 09:38:17,316 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 09:38:17,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:38:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 09:38:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-10-28 09:38:17,320 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) [2021-10-28 09:38:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-10-28 09:38:17,321 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 41 [2021-10-28 09:38:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:17,321 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-10-28 09:38:17,321 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) [2021-10-28 09:38:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-10-28 09:38:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:38:17,322 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:17,322 INFO L513 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] [2021-10-28 09:38:17,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:17,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:38:17,537 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1366408299, now seen corresponding path program 2 times [2021-10-28 09:38:17,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:17,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108961579] [2021-10-28 09:38:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:17,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:38:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:38:17,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:17,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108961579] [2021-10-28 09:38:17,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108961579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:17,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372469162] [2021-10-28 09:38:17,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:17,679 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:17,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:17,680 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:17,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:38:18,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:38:18,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:18,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:38:18,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:18,092 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 09:38:18,093 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 [2021-10-28 09:38:18,120 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 [2021-10-28 09:38:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-28 09:38:19,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372469162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:19,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:19,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2021-10-28 09:38:19,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041811704] [2021-10-28 09:38:19,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:38:19,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:38:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:38:19,923 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) [2021-10-28 09:38:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:20,543 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-10-28 09:38:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:38:20,543 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 [2021-10-28 09:38:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:20,544 INFO L225 Difference]: With dead ends: 88 [2021-10-28 09:38:20,544 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 09:38:20,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2021-10-28 09:38:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 09:38:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-10-28 09:38:20,548 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) [2021-10-28 09:38:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-10-28 09:38:20,548 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 44 [2021-10-28 09:38:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:20,549 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-10-28 09:38:20,549 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) [2021-10-28 09:38:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-10-28 09:38:20,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:38:20,550 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:20,550 INFO L513 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] [2021-10-28 09:38:20,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:20,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:38:20,757 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1242834180, now seen corresponding path program 1 times [2021-10-28 09:38:20,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:20,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135308467] [2021-10-28 09:38:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:20,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-28 09:38:20,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:20,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135308467] [2021-10-28 09:38:20,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135308467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:20,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746432321] [2021-10-28 09:38:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:20,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:20,871 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:20,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:38:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:21,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:38:21,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:38:21,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746432321] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:21,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:21,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 15 [2021-10-28 09:38:21,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640855434] [2021-10-28 09:38:21,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:38:21,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:38:21,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:38:21,554 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) [2021-10-28 09:38:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:21,682 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-10-28 09:38:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:38:21,682 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 [2021-10-28 09:38:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:21,683 INFO L225 Difference]: With dead ends: 98 [2021-10-28 09:38:21,683 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 09:38:21,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:38:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 09:38:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2021-10-28 09:38:21,687 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) [2021-10-28 09:38:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-10-28 09:38:21,688 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 51 [2021-10-28 09:38:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:21,688 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-10-28 09:38:21,689 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) [2021-10-28 09:38:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-10-28 09:38:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 09:38:21,690 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:21,690 INFO L513 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] [2021-10-28 09:38:21,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:21,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:21,904 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash 968105693, now seen corresponding path program 2 times [2021-10-28 09:38:21,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:21,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162229496] [2021-10-28 09:38:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:21,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:21,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:38:22,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:22,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162229496] [2021-10-28 09:38:22,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162229496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:22,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495745950] [2021-10-28 09:38:22,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:22,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:22,128 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:22,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:38:22,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:38:22,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:22,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:38:22,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:22,627 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-28 09:38:22,627 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 [2021-10-28 09:38:42,854 INFO L354 Elim1Store]: treesize reduction 114, result has 35.2 percent of original size [2021-10-28 09:38:42,855 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 [2021-10-28 09:38:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-10-28 09:38:44,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495745950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:44,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:44,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2021-10-28 09:38:44,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275077312] [2021-10-28 09:38:44,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:38:44,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:38:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:38:44,469 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) [2021-10-28 09:38:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:44,655 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-10-28 09:38:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:38:44,655 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 [2021-10-28 09:38:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:44,656 INFO L225 Difference]: With dead ends: 91 [2021-10-28 09:38:44,656 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 09:38:44,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:38:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 09:38:44,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-10-28 09:38:44,660 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) [2021-10-28 09:38:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-10-28 09:38:44,661 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 59 [2021-10-28 09:38:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:44,661 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-10-28 09:38:44,661 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) [2021-10-28 09:38:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-10-28 09:38:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 09:38:44,662 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:44,662 INFO L513 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] [2021-10-28 09:38:44,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:44,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:44,873 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash 968105694, now seen corresponding path program 1 times [2021-10-28 09:38:44,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:44,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047240540] [2021-10-28 09:38:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:44,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:44,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:38:45,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:45,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047240540] [2021-10-28 09:38:45,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047240540] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:45,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681056114] [2021-10-28 09:38:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:45,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:45,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:45,081 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:45,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:38:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:45,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:38:45,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:38:45,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681056114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:45,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:45,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-10-28 09:38:45,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543781347] [2021-10-28 09:38:45,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:38:45,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:45,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:38:45,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:38:45,894 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) [2021-10-28 09:38:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:45,995 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-10-28 09:38:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:38:45,995 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 [2021-10-28 09:38:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:45,996 INFO L225 Difference]: With dead ends: 94 [2021-10-28 09:38:45,996 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 09:38:45,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:38:45,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 09:38:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-28 09:38:45,999 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) [2021-10-28 09:38:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-10-28 09:38:46,000 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 59 [2021-10-28 09:38:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:46,000 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-28 09:38:46,001 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) [2021-10-28 09:38:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-10-28 09:38:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-28 09:38:46,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:46,002 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:46,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:46,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:38:46,217 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash -317183977, now seen corresponding path program 2 times [2021-10-28 09:38:46,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:46,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996764681] [2021-10-28 09:38:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:46,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-28 09:38:46,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:46,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996764681] [2021-10-28 09:38:46,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996764681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:46,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998058570] [2021-10-28 09:38:46,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:46,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:46,332 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:46,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:38:47,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:38:47,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:47,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 09:38:47,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:47,076 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 09:38:47,076 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 [2021-10-28 09:38:47,079 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 [2021-10-28 09:38:48,895 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-10-28 09:38:48,895 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 [2021-10-28 09:38:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-28 09:38:48,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998058570] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:48,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:48,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-10-28 09:38:48,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638903950] [2021-10-28 09:38:48,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:38:48,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:38:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:38:48,987 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) [2021-10-28 09:38:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:49,146 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-10-28 09:38:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:38:49,146 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 [2021-10-28 09:38:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:49,147 INFO L225 Difference]: With dead ends: 101 [2021-10-28 09:38:49,147 INFO L226 Difference]: Without dead ends: 101 [2021-10-28 09:38:49,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:38:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-28 09:38:49,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2021-10-28 09:38:49,150 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) [2021-10-28 09:38:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2021-10-28 09:38:49,151 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 62 [2021-10-28 09:38:49,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:49,151 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2021-10-28 09:38:49,151 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) [2021-10-28 09:38:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2021-10-28 09:38:49,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 09:38:49,152 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:49,152 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:49,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-28 09:38:49,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:49,368 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1242768695, now seen corresponding path program 1 times [2021-10-28 09:38:49,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:49,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192259367] [2021-10-28 09:38:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:49,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-10-28 09:38:49,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:49,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192259367] [2021-10-28 09:38:49,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192259367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:49,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:38:49,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:38:49,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744260794] [2021-10-28 09:38:49,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:38:49,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:49,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:38:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:49,508 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) [2021-10-28 09:38:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:49,614 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2021-10-28 09:38:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:38:49,615 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 [2021-10-28 09:38:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:49,616 INFO L225 Difference]: With dead ends: 95 [2021-10-28 09:38:49,616 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 09:38:49,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:38:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 09:38:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-28 09:38:49,622 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) [2021-10-28 09:38:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2021-10-28 09:38:49,623 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 63 [2021-10-28 09:38:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:49,623 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2021-10-28 09:38:49,623 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) [2021-10-28 09:38:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2021-10-28 09:38:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 09:38:49,624 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:49,625 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:38:49,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 09:38:49,625 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1242768694, now seen corresponding path program 1 times [2021-10-28 09:38:49,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:49,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925697340] [2021-10-28 09:38:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:49,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-28 09:38:49,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:49,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925697340] [2021-10-28 09:38:49,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925697340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:49,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355988586] [2021-10-28 09:38:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:49,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:49,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:49,773 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:38:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:50,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:38:50,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-28 09:38:50,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355988586] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:50,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:50,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2021-10-28 09:38:50,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224910865] [2021-10-28 09:38:50,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:38:50,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:38:50,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:50,687 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) [2021-10-28 09:38:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:50,803 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-10-28 09:38:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:38:50,804 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 [2021-10-28 09:38:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:50,805 INFO L225 Difference]: With dead ends: 104 [2021-10-28 09:38:50,805 INFO L226 Difference]: Without dead ends: 104 [2021-10-28 09:38:50,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:38:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-28 09:38:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2021-10-28 09:38:50,808 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) [2021-10-28 09:38:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2021-10-28 09:38:50,809 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 63 [2021-10-28 09:38:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:50,809 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2021-10-28 09:38:50,809 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) [2021-10-28 09:38:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2021-10-28 09:38:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-28 09:38:50,810 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:50,810 INFO L513 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] [2021-10-28 09:38:50,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:51,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:51,011 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash 446605052, now seen corresponding path program 2 times [2021-10-28 09:38:51,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:51,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107172256] [2021-10-28 09:38:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:51,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:51,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-28 09:38:51,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:51,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107172256] [2021-10-28 09:38:51,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107172256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:51,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104065806] [2021-10-28 09:38:51,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:51,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:51,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:51,130 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:51,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:38:51,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:38:51,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:51,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:38:51,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:52,057 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 [2021-10-28 09:38:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-10-28 09:38:52,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104065806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:38:52,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:38:52,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2021-10-28 09:38:52,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336736671] [2021-10-28 09:38:52,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:38:52,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:38:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:52,085 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) [2021-10-28 09:38:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:52,108 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2021-10-28 09:38:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:38:52,111 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 [2021-10-28 09:38:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:52,112 INFO L225 Difference]: With dead ends: 103 [2021-10-28 09:38:52,112 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 09:38:52,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 09:38:52,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-10-28 09:38:52,115 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) [2021-10-28 09:38:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-28 09:38:52,115 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 68 [2021-10-28 09:38:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:52,116 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-28 09:38:52,116 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) [2021-10-28 09:38:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-28 09:38:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 09:38:52,116 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:52,117 INFO L513 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] [2021-10-28 09:38:52,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:52,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 09:38:52,341 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:52,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash -860049249, now seen corresponding path program 1 times [2021-10-28 09:38:52,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:52,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792027980] [2021-10-28 09:38:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:52,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-28 09:38:52,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:52,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792027980] [2021-10-28 09:38:52,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792027980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:52,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855919091] [2021-10-28 09:38:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:52,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:52,500 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:52,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:38:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:53,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:38:53,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-28 09:38:53,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855919091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:53,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:53,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-10-28 09:38:53,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707564230] [2021-10-28 09:38:53,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:38:53,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:38:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:53,501 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) [2021-10-28 09:38:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:53,635 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-10-28 09:38:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:38:53,636 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 [2021-10-28 09:38:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:53,637 INFO L225 Difference]: With dead ends: 110 [2021-10-28 09:38:53,637 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 09:38:53,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:38:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 09:38:53,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2021-10-28 09:38:53,640 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) [2021-10-28 09:38:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-10-28 09:38:53,641 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 72 [2021-10-28 09:38:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:53,641 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-10-28 09:38:53,641 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) [2021-10-28 09:38:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-10-28 09:38:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 09:38:53,642 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:53,642 INFO L513 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] [2021-10-28 09:38:53,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:53,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 09:38:53,856 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1537768621, now seen corresponding path program 2 times [2021-10-28 09:38:53,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:53,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711724657] [2021-10-28 09:38:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:53,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-28 09:38:54,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:54,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711724657] [2021-10-28 09:38:54,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711724657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:54,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717376767] [2021-10-28 09:38:54,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:38:54,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:54,013 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:54,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:38:55,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:38:55,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:55,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:38:55,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-28 09:38:55,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717376767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:55,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:38:55,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-10-28 09:38:55,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937062345] [2021-10-28 09:38:55,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:38:55,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:38:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:38:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:55,328 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) [2021-10-28 09:38:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:38:55,428 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2021-10-28 09:38:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:38:55,429 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 [2021-10-28 09:38:55,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:38:55,430 INFO L225 Difference]: With dead ends: 115 [2021-10-28 09:38:55,430 INFO L226 Difference]: Without dead ends: 115 [2021-10-28 09:38:55,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:38:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-28 09:38:55,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2021-10-28 09:38:55,434 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) [2021-10-28 09:38:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-10-28 09:38:55,435 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 77 [2021-10-28 09:38:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:38:55,435 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-10-28 09:38:55,436 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) [2021-10-28 09:38:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-10-28 09:38:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-28 09:38:55,437 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:38:55,437 INFO L513 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] [2021-10-28 09:38:55,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:38:55,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:55,652 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:38:55,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:38:55,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1675622049, now seen corresponding path program 3 times [2021-10-28 09:38:55,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:38:55,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650220100] [2021-10-28 09:38:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:38:55,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:38:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:38:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:55,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:38:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:38:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-28 09:38:55,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:38:55,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650220100] [2021-10-28 09:38:55,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650220100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:38:55,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512608822] [2021-10-28 09:38:55,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:38:55,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:38:55,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:38:55,842 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:38:55,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:38:56,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:38:56,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:38:56,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 09:38:56,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:38:56,782 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-28 09:38:56,783 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 [2021-10-28 09:39:09,453 INFO L354 Elim1Store]: treesize reduction 72, result has 40.5 percent of original size [2021-10-28 09:39:09,453 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 [2021-10-28 09:39:09,471 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 09:39:09,471 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 [2021-10-28 09:39:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-10-28 09:39:09,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512608822] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:09,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:09,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-10-28 09:39:09,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630593775] [2021-10-28 09:39:09,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:39:09,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:39:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:39:09,772 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) [2021-10-28 09:39:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:10,852 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2021-10-28 09:39:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:39:10,853 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 [2021-10-28 09:39:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:10,856 INFO L225 Difference]: With dead ends: 132 [2021-10-28 09:39:10,856 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 09:39:10,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-10-28 09:39:10,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 09:39:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-10-28 09:39:10,865 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) [2021-10-28 09:39:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2021-10-28 09:39:10,876 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 82 [2021-10-28 09:39:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:10,876 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2021-10-28 09:39:10,878 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) [2021-10-28 09:39:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2021-10-28 09:39:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-28 09:39:10,879 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:10,879 INFO L513 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] [2021-10-28 09:39:10,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:11,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-28 09:39:11,098 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:11,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1670701492, now seen corresponding path program 1 times [2021-10-28 09:39:11,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:11,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425479481] [2021-10-28 09:39:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:11,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:39:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-28 09:39:11,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:11,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425479481] [2021-10-28 09:39:11,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425479481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:11,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775157440] [2021-10-28 09:39:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:11,270 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:11,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:11,271 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:11,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:39:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:12,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:39:12,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-28 09:39:12,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775157440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:12,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:12,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-10-28 09:39:12,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487702066] [2021-10-28 09:39:12,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:39:12,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:39:12,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:12,906 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) [2021-10-28 09:39:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:13,004 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2021-10-28 09:39:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:39:13,005 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 [2021-10-28 09:39:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:13,008 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:39:13,008 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:39:13,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:39:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2021-10-28 09:39:13,012 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) [2021-10-28 09:39:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-10-28 09:39:13,014 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 88 [2021-10-28 09:39:13,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:13,015 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-10-28 09:39:13,015 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) [2021-10-28 09:39:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-10-28 09:39:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 09:39:13,017 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:13,017 INFO L513 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] [2021-10-28 09:39:13,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:13,229 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:13,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2102210110, now seen corresponding path program 2 times [2021-10-28 09:39:13,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:13,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351905705] [2021-10-28 09:39:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:13,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:39:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:13,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-28 09:39:13,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:13,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351905705] [2021-10-28 09:39:13,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351905705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:13,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408108120] [2021-10-28 09:39:13,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:39:13,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:13,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:13,433 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:13,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:39:14,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:39:14,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:14,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:39:14,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:14,844 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 [2021-10-28 09:39:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-10-28 09:39:14,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408108120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:14,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:14,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2021-10-28 09:39:14,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146313505] [2021-10-28 09:39:14,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:39:14,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:14,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:39:14,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:39:14,971 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) [2021-10-28 09:39:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:15,428 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2021-10-28 09:39:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:39:15,429 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 [2021-10-28 09:39:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:15,430 INFO L225 Difference]: With dead ends: 133 [2021-10-28 09:39:15,430 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 09:39:15,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:39:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 09:39:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-10-28 09:39:15,435 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) [2021-10-28 09:39:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2021-10-28 09:39:15,436 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 93 [2021-10-28 09:39:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:15,436 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2021-10-28 09:39:15,436 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) [2021-10-28 09:39:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2021-10-28 09:39:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 09:39:15,438 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:15,438 INFO L513 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] [2021-10-28 09:39:15,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:15,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 09:39:15,639 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:15,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 757483543, now seen corresponding path program 4 times [2021-10-28 09:39:15,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:15,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102737273] [2021-10-28 09:39:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:15,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:39:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:39:15,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:15,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102737273] [2021-10-28 09:39:15,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102737273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:15,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404405338] [2021-10-28 09:39:15,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:39:15,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:15,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:15,882 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:15,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 09:39:17,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:39:17,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:17,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:39:17,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:39:17,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404405338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:17,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:17,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-10-28 09:39:17,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039685140] [2021-10-28 09:39:17,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:39:17,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:39:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:39:17,452 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) [2021-10-28 09:39:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:17,585 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2021-10-28 09:39:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:39:17,586 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 [2021-10-28 09:39:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:17,587 INFO L225 Difference]: With dead ends: 138 [2021-10-28 09:39:17,587 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 09:39:17,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:39:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 09:39:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2021-10-28 09:39:17,591 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) [2021-10-28 09:39:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2021-10-28 09:39:17,592 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 102 [2021-10-28 09:39:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:17,592 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2021-10-28 09:39:17,593 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) [2021-10-28 09:39:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2021-10-28 09:39:17,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-28 09:39:17,594 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:17,594 INFO L513 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] [2021-10-28 09:39:17,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:17,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 09:39:17,809 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:17,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:17,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1289746523, now seen corresponding path program 5 times [2021-10-28 09:39:17,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:17,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024916438] [2021-10-28 09:39:17,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:17,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:39:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:18,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:39:18,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:18,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024916438] [2021-10-28 09:39:18,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024916438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:18,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190290713] [2021-10-28 09:39:18,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:39:18,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:18,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:18,065 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:18,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 09:39:20,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-28 09:39:20,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:20,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:39:20,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:39:20,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190290713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:20,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:20,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-10-28 09:39:20,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173687270] [2021-10-28 09:39:20,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:39:20,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:39:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:39:20,568 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) [2021-10-28 09:39:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:20,721 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2021-10-28 09:39:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:39:20,722 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 [2021-10-28 09:39:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:20,726 INFO L225 Difference]: With dead ends: 139 [2021-10-28 09:39:20,726 INFO L226 Difference]: Without dead ends: 139 [2021-10-28 09:39:20,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:39:20,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-28 09:39:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-10-28 09:39:20,731 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) [2021-10-28 09:39:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2021-10-28 09:39:20,732 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 107 [2021-10-28 09:39:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:20,733 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2021-10-28 09:39:20,733 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) [2021-10-28 09:39:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2021-10-28 09:39:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-28 09:39:20,734 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:20,734 INFO L513 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] [2021-10-28 09:39:20,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:20,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 09:39:20,945 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash -524955433, now seen corresponding path program 6 times [2021-10-28 09:39:20,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:20,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186693221] [2021-10-28 09:39:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:20,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 09:39:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 207 proven. 37 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-10-28 09:39:21,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:21,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186693221] [2021-10-28 09:39:21,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186693221] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:21,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898743741] [2021-10-28 09:39:21,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:39:21,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:21,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:21,581 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:21,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 09:39:23,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-28 09:39:23,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:23,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:39:23,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:23,098 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 09:39:23,098 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 [2021-10-28 09:39:23,102 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 [2021-10-28 09:39:26,536 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-10-28 09:39:26,537 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 [2021-10-28 09:39:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-10-28 09:39:27,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898743741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:39:27,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:39:27,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 28 [2021-10-28 09:39:27,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631192850] [2021-10-28 09:39:27,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:39:27,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:27,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:39:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-10-28 09:39:27,174 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) [2021-10-28 09:39:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:27,523 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2021-10-28 09:39:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:39:27,523 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 [2021-10-28 09:39:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:27,525 INFO L225 Difference]: With dead ends: 138 [2021-10-28 09:39:27,525 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 09:39:27,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 09:39:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 09:39:27,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-10-28 09:39:27,530 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) [2021-10-28 09:39:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-10-28 09:39:27,531 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 112 [2021-10-28 09:39:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:27,532 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-10-28 09:39:27,532 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) [2021-10-28 09:39:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-10-28 09:39:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 09:39:27,533 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:27,534 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:27,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:27,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:27,749 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1387314960, now seen corresponding path program 1 times [2021-10-28 09:39:27,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:27,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921654297] [2021-10-28 09:39:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:27,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:27,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:27,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:39:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:27,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:27,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:27,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921654297] [2021-10-28 09:39:27,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921654297] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:27,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122362945] [2021-10-28 09:39:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:27,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:27,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:27,964 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:27,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 09:39:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:29,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:39:29,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:29,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122362945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:29,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:29,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2021-10-28 09:39:29,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580873414] [2021-10-28 09:39:29,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:39:29,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:39:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:39:29,857 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) [2021-10-28 09:39:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:29,914 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2021-10-28 09:39:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:39:29,915 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 [2021-10-28 09:39:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:29,916 INFO L225 Difference]: With dead ends: 146 [2021-10-28 09:39:29,916 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:39:29,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:39:29,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:39:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2021-10-28 09:39:29,920 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) [2021-10-28 09:39:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2021-10-28 09:39:29,922 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 117 [2021-10-28 09:39:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:29,923 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2021-10-28 09:39:29,923 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) [2021-10-28 09:39:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2021-10-28 09:39:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-28 09:39:29,924 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:29,924 INFO L513 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] [2021-10-28 09:39:29,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:30,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:30,153 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash -575903494, now seen corresponding path program 2 times [2021-10-28 09:39:30,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:30,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261343726] [2021-10-28 09:39:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:30,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:39:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:30,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:30,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261343726] [2021-10-28 09:39:30,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261343726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:30,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771998854] [2021-10-28 09:39:30,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:39:30,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:30,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:30,381 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:30,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 09:39:31,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:39:31,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:31,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:39:31,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:32,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771998854] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:32,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:32,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2021-10-28 09:39:32,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886084696] [2021-10-28 09:39:32,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:39:32,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:32,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:39:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:39:32,227 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) [2021-10-28 09:39:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:32,346 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2021-10-28 09:39:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:39:32,346 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 [2021-10-28 09:39:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:32,348 INFO L225 Difference]: With dead ends: 151 [2021-10-28 09:39:32,348 INFO L226 Difference]: Without dead ends: 151 [2021-10-28 09:39:32,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:39:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-28 09:39:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-10-28 09:39:32,353 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) [2021-10-28 09:39:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2021-10-28 09:39:32,355 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 122 [2021-10-28 09:39:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:32,355 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2021-10-28 09:39:32,356 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) [2021-10-28 09:39:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2021-10-28 09:39:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 09:39:32,357 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:32,357 INFO L513 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] [2021-10-28 09:39:32,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-28 09:39:32,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-28 09:39:32,569 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash -371170992, now seen corresponding path program 3 times [2021-10-28 09:39:32,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:32,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112053941] [2021-10-28 09:39:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:32,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:39:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:32,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:32,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:32,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112053941] [2021-10-28 09:39:32,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112053941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:32,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610044360] [2021-10-28 09:39:32,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:39:32,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:32,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:32,796 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:32,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 09:39:34,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:39:34,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:34,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:39:34,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:35,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610044360] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:35,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:35,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2021-10-28 09:39:35,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570324635] [2021-10-28 09:39:35,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:39:35,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:39:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:35,069 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) [2021-10-28 09:39:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:35,170 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2021-10-28 09:39:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:39:35,170 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 [2021-10-28 09:39:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:35,171 INFO L225 Difference]: With dead ends: 156 [2021-10-28 09:39:35,171 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 09:39:35,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:39:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 09:39:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2021-10-28 09:39:35,176 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) [2021-10-28 09:39:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-10-28 09:39:35,177 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 127 [2021-10-28 09:39:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:35,178 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-10-28 09:39:35,178 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) [2021-10-28 09:39:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-10-28 09:39:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-28 09:39:35,179 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:35,180 INFO L513 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] [2021-10-28 09:39:35,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:35,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:35,389 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1244147386, now seen corresponding path program 4 times [2021-10-28 09:39:35,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:35,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413250470] [2021-10-28 09:39:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:35,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:39:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:35,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:35,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:35,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413250470] [2021-10-28 09:39:35,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413250470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:35,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487862564] [2021-10-28 09:39:35,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:39:35,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:35,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:35,653 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:35,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 09:39:37,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:39:37,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:37,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:39:37,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:38,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487862564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:38,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:38,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2021-10-28 09:39:38,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222860429] [2021-10-28 09:39:38,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:39:38,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:38,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:39:38,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:39:38,288 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) [2021-10-28 09:39:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:38,371 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2021-10-28 09:39:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:39:38,372 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 [2021-10-28 09:39:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:38,373 INFO L225 Difference]: With dead ends: 161 [2021-10-28 09:39:38,373 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 09:39:38,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:39:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 09:39:38,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2021-10-28 09:39:38,377 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) [2021-10-28 09:39:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2021-10-28 09:39:38,378 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 132 [2021-10-28 09:39:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:38,379 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2021-10-28 09:39:38,379 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) [2021-10-28 09:39:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2021-10-28 09:39:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-28 09:39:38,380 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:38,380 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:39:38,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:38,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:38,597 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2070269040, now seen corresponding path program 5 times [2021-10-28 09:39:38,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:38,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401144916] [2021-10-28 09:39:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:38,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:39:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:38,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:38,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:38,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401144916] [2021-10-28 09:39:38,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401144916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:38,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302250369] [2021-10-28 09:39:38,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:39:38,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:38,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:38,849 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:38,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 09:39:57,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-28 09:39:57,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:39:57,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:39:57,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:39:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:58,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302250369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:58,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:39:58,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2021-10-28 09:39:58,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049936007] [2021-10-28 09:39:58,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:39:58,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:39:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:39:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:39:58,109 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) [2021-10-28 09:39:58,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:39:58,237 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2021-10-28 09:39:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:39:58,242 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 [2021-10-28 09:39:58,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:39:58,243 INFO L225 Difference]: With dead ends: 166 [2021-10-28 09:39:58,243 INFO L226 Difference]: Without dead ends: 166 [2021-10-28 09:39:58,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:39:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-28 09:39:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-10-28 09:39:58,246 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) [2021-10-28 09:39:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2021-10-28 09:39:58,247 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 137 [2021-10-28 09:39:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:39:58,247 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2021-10-28 09:39:58,248 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) [2021-10-28 09:39:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2021-10-28 09:39:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-28 09:39:58,249 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:39:58,249 INFO L513 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] [2021-10-28 09:39:58,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:39:58,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-28 09:39:58,461 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:39:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:39:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1106756730, now seen corresponding path program 6 times [2021-10-28 09:39:58,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:39:58,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678051754] [2021-10-28 09:39:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:39:58,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:39:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:58,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:39:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:58,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:39:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:39:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:39:58,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:39:58,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678051754] [2021-10-28 09:39:58,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678051754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:39:58,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844533946] [2021-10-28 09:39:58,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:39:58,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:39:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:39:58,708 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:39:58,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 09:40:01,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-28 09:40:01,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:40:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:40:01,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:40:02,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844533946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:02,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:40:02,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 14 [2021-10-28 09:40:02,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951314753] [2021-10-28 09:40:02,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:40:02,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:40:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:40:02,329 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) [2021-10-28 09:40:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:40:02,481 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2021-10-28 09:40:02,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:40:02,481 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 [2021-10-28 09:40:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:40:02,483 INFO L225 Difference]: With dead ends: 171 [2021-10-28 09:40:02,483 INFO L226 Difference]: Without dead ends: 171 [2021-10-28 09:40:02,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:40:02,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-28 09:40:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-10-28 09:40:02,486 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) [2021-10-28 09:40:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2021-10-28 09:40:02,488 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 142 [2021-10-28 09:40:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:40:02,488 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2021-10-28 09:40:02,488 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) [2021-10-28 09:40:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2021-10-28 09:40:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-28 09:40:02,489 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:40:02,489 INFO L513 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] [2021-10-28 09:40:02,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:40:02,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 09:40:02,690 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:40:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:40:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1612565040, now seen corresponding path program 7 times [2021-10-28 09:40:02,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:40:02,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466119353] [2021-10-28 09:40:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:02,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:40:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:40:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:40:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:40:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:40:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:40:02,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:40:02,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466119353] [2021-10-28 09:40:02,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466119353] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:02,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553792349] [2021-10-28 09:40:02,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:40:02,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:02,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:40:02,937 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:40:02,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 09:40:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:04,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:40:04,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:40:04,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553792349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:04,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:40:04,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2021-10-28 09:40:04,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636990438] [2021-10-28 09:40:04,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:40:04,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:04,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:40:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:40:04,911 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) [2021-10-28 09:40:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:40:05,027 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2021-10-28 09:40:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:40:05,027 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 [2021-10-28 09:40:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:40:05,028 INFO L225 Difference]: With dead ends: 176 [2021-10-28 09:40:05,029 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 09:40:05,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:40:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 09:40:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2021-10-28 09:40:05,034 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) [2021-10-28 09:40:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 176 transitions. [2021-10-28 09:40:05,035 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 176 transitions. Word has length 147 [2021-10-28 09:40:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:40:05,036 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 176 transitions. [2021-10-28 09:40:05,036 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) [2021-10-28 09:40:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 176 transitions. [2021-10-28 09:40:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-10-28 09:40:05,038 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:40:05,038 INFO L513 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] [2021-10-28 09:40:05,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:40:05,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 09:40:05,265 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:40:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:40:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -896062918, now seen corresponding path program 8 times [2021-10-28 09:40:05,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:40:05,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715116203] [2021-10-28 09:40:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:05,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:40:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:40:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:40:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:40:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:40:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:40:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:40:05,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:40:05,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715116203] [2021-10-28 09:40:05,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715116203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:05,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046309782] [2021-10-28 09:40:05,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:40:05,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:40:05,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:40:05,549 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:40:05,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 09:40:07,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:40:07,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:40:07,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:40:07,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:40:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-10-28 09:40:07,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046309782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:40:07,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:40:07,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 16 [2021-10-28 09:40:07,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358174279] [2021-10-28 09:40:07,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:40:07,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:40:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:40:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:40:07,599 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) [2021-10-28 09:40:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:40:07,757 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2021-10-28 09:40:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:40:07,758 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 [2021-10-28 09:40:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:40:07,759 INFO L225 Difference]: With dead ends: 177 [2021-10-28 09:40:07,760 INFO L226 Difference]: Without dead ends: 177 [2021-10-28 09:40:07,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:40:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-28 09:40:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-10-28 09:40:07,764 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) [2021-10-28 09:40:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-10-28 09:40:07,765 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 152 [2021-10-28 09:40:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:40:07,766 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-10-28 09:40:07,766 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) [2021-10-28 09:40:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-10-28 09:40:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-28 09:40:07,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:40:07,767 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:40:07,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:40:07,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-28 09:40:07,989 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 09:40:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:40:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1136420880, now seen corresponding path program 9 times [2021-10-28 09:40:07,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:40:07,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20154903] [2021-10-28 09:40:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:40:07,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:40:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:40:08,109 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:40:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:40:08,243 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:40:08,244 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:40:08,245 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location getNumbers4Err0REQUIRES_VIOLATION [2021-10-28 09:40:08,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err1REQUIRES_VIOLATION [2021-10-28 09:40:08,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err2REQUIRES_VIOLATION [2021-10-28 09:40:08,247 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err3REQUIRES_VIOLATION [2021-10-28 09:40:08,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:40:08,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:40:08,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:40:08,248 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err0REQUIRES_VIOLATION [2021-10-28 09:40:08,249 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err1REQUIRES_VIOLATION [2021-10-28 09:40:08,249 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err2REQUIRES_VIOLATION [2021-10-28 09:40:08,249 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err3REQUIRES_VIOLATION [2021-10-28 09:40:08,249 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err0REQUIRES_VIOLATION [2021-10-28 09:40:08,249 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err1REQUIRES_VIOLATION [2021-10-28 09:40:08,250 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err2REQUIRES_VIOLATION [2021-10-28 09:40:08,250 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err3REQUIRES_VIOLATION [2021-10-28 09:40:08,250 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr0REQUIRES_VIOLATION [2021-10-28 09:40:08,250 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr1REQUIRES_VIOLATION [2021-10-28 09:40:08,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 09:40:08,254 INFO L731 BasicCegarLoop]: Path program histogram: [9, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:40:08,259 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:40:08,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:40:08 BoogieIcfgContainer [2021-10-28 09:40:08,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:40:08,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:40:08,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:40:08,394 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:40:08,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:37:50" (3/4) ... [2021-10-28 09:40:08,397 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:40:08,508 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:40:08,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:40:08,509 INFO L168 Benchmark]: Toolchain (without parser) took 138613.33 ms. Allocated memory was 115.3 MB in the beginning and 436.2 MB in the end (delta: 320.9 MB). Free memory was 81.3 MB in the beginning and 127.2 MB in the end (delta: -45.9 MB). Peak memory consumption was 273.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:40:08,509 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 86.1 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:40:08,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.71 ms. Allocated memory is still 115.3 MB. Free memory was 81.1 MB in the beginning and 91.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:40:08,510 INFO L168 Benchmark]: Boogie Preprocessor took 44.82 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 89.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:40:08,510 INFO L168 Benchmark]: RCFGBuilder took 571.70 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 75.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:40:08,511 INFO L168 Benchmark]: TraceAbstraction took 137598.07 ms. Allocated memory was 115.3 MB in the beginning and 436.2 MB in the end (delta: 320.9 MB). Free memory was 74.4 MB in the beginning and 135.6 MB in the end (delta: -61.2 MB). Peak memory consumption was 263.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:40:08,519 INFO L168 Benchmark]: Witness Printer took 115.54 ms. Allocated memory is still 436.2 MB. Free memory was 135.6 MB in the beginning and 127.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:40:08,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 86.1 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.71 ms. Allocated memory is still 115.3 MB. Free memory was 81.1 MB in the beginning and 91.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.82 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 89.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 571.70 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 75.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 137598.07 ms. Allocated memory was 115.3 MB in the beginning and 436.2 MB in the end (delta: 320.9 MB). Free memory was 74.4 MB in the beginning and 135.6 MB in the end (delta: -61.2 MB). Peak memory consumption was 263.7 MB. Max. memory is 16.1 GB. * Witness Printer took 115.54 ms. Allocated memory is still 436.2 MB. Free memory was 135.6 MB in the beginning and 127.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 137.3s, OverallIterations: 39, TraceHistogramMax: 10, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2045 SDtfs, 1569 SDslu, 6181 SDs, 0 SdLazy, 4337 SolverSat, 396 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3105 GetRequests, 2648 SyntacticMatches, 0 SemanticMatches, 457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 5.8s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 38 MinimizatonAttempts, 123 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 22.0s SatisfiabilityAnalysisTime, 70.1s 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! [2021-10-28 09:40:08,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0f7aaac-fb9d-4dcd-9cf9-1c06032a0c52/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...