./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_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD --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 23:29:01,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:29:01,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:29:01,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:29:01,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:29:01,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:29:01,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:29:01,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:29:01,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:29:01,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:29:01,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:29:01,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:29:01,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:29:01,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:29:01,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:29:01,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:29:01,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:29:01,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:29:01,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:29:01,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:29:01,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:29:01,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:29:01,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:29:01,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:29:01,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:29:01,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:29:01,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:29:01,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:29:01,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:29:01,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:29:01,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:29:01,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:29:01,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:29:01,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:29:01,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:29:01,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:29:01,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:29:01,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:29:01,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:29:01,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:29:01,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:29:01,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:29:01,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:29:01,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:29:01,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:29:01,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:29:01,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:29:01,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:29:01,402 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:29:01,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:29:01,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:29:01,402 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:29:01,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:29:01,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:29:01,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:29:01,403 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:29:01,404 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:29:01,404 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:29:01,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:29:01,404 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:29:01,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:29:01,405 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:29:01,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:29:01,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:29:01,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:29:01,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:29:01,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:29:01,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:29:01,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:29:01,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:29:01,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:29:01,407 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_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac [2021-10-28 23:29:01,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:29:01,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:29:01,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:29:01,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:29:01,681 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:29:01,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-10-28 23:29:01,767 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/data/adf19b4c9/043b20c4b3a046599ae09ef76aae6778/FLAGec6620eda [2021-10-28 23:29:02,261 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:29:02,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-10-28 23:29:02,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/data/adf19b4c9/043b20c4b3a046599ae09ef76aae6778/FLAGec6620eda [2021-10-28 23:29:02,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/data/adf19b4c9/043b20c4b3a046599ae09ef76aae6778 [2021-10-28 23:29:02,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:29:02,663 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:29:02,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:29:02,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:29:02,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:29:02,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131e0ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02, skipping insertion in model container [2021-10-28 23:29:02,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:29:02,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:29:02,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:29:02,844 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:29:02,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:29:02,879 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:29:02,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02 WrapperNode [2021-10-28 23:29:02,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:29:02,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:29:02,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:29:02,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:29:02,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:29:02,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:29:02,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:29:02,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:29:02,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (1/1) ... [2021-10-28 23:29:02,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:29:02,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:02,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:29:03,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:29:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:29:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:29:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-10-28 23:29:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2021-10-28 23:29:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2021-10-28 23:29:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2021-10-28 23:29:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:29:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-10-28 23:29:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-10-28 23:29:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:29:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2021-10-28 23:29:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:29:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2021-10-28 23:29:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:29:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:29:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2021-10-28 23:29:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:29:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:29:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:29:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:29:03,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:29:03,480 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:29:03,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:29:03 BoogieIcfgContainer [2021-10-28 23:29:03,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:29:03,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:29:03,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:29:03,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:29:03,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:29:02" (1/3) ... [2021-10-28 23:29:03,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51718fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:29:03, skipping insertion in model container [2021-10-28 23:29:03,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:29:02" (2/3) ... [2021-10-28 23:29:03,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51718fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:29:03, skipping insertion in model container [2021-10-28 23:29:03,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:29:03" (3/3) ... [2021-10-28 23:29:03,492 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2021-10-28 23:29:03,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:29:03,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-10-28 23:29:03,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:29:03,581 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 23:29:03,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-28 23:29:03,605 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 23:29:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:29:03,613 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:03,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:29:03,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:03,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468390, now seen corresponding path program 1 times [2021-10-28 23:29:03,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:03,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713003830] [2021-10-28 23:29:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:03,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:03,952 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 23:29:03,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:03,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713003830] [2021-10-28 23:29:03,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713003830] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:03,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:29:03,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:29:03,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731829807] [2021-10-28 23:29:03,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:29:03,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:29:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:29:03,978 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 23:29:04,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:04,342 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-10-28 23:29:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:29:04,344 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 23:29:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:04,356 INFO L225 Difference]: With dead ends: 87 [2021-10-28 23:29:04,356 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 23:29:04,358 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 23:29:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 23:29:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2021-10-28 23:29:04,393 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 23:29:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-10-28 23:29:04,396 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2021-10-28 23:29:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:04,397 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-10-28 23:29:04,397 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 23:29:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-10-28 23:29:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:29:04,398 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:04,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:29:04,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:29:04,399 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468391, now seen corresponding path program 1 times [2021-10-28 23:29:04,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:04,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969055482] [2021-10-28 23:29:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:04,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:04,643 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 23:29:04,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:04,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969055482] [2021-10-28 23:29:04,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969055482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:04,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:29:04,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:29:04,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395657772] [2021-10-28 23:29:04,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:29:04,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:29:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:29:04,649 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 23:29:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:04,911 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-10-28 23:29:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:29:04,911 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 23:29:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:04,916 INFO L225 Difference]: With dead ends: 69 [2021-10-28 23:29:04,917 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 23:29:04,919 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 23:29:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 23:29:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-10-28 23:29:04,935 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 23:29:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-10-28 23:29:04,947 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 12 [2021-10-28 23:29:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:04,949 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-10-28 23:29:04,949 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 23:29:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-10-28 23:29:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:29:04,950 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:04,951 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:29:04,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:29:04,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:04,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1757784526, now seen corresponding path program 1 times [2021-10-28 23:29:04,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:04,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806583035] [2021-10-28 23:29:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:04,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:05,233 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 23:29:05,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:05,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806583035] [2021-10-28 23:29:05,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806583035] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:05,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086035193] [2021-10-28 23:29:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:05,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:05,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:05,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:05,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:29:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:05,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:29:05,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:05,602 INFO L354 Elim1Store]: treesize reduction 89, result has 18.3 percent of original size [2021-10-28 23:29:05,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 56 [2021-10-28 23:29:05,621 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 23:29:05,622 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 23:29:06,692 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 23:29:06,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086035193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:06,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:06,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-28 23:29:06,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088633938] [2021-10-28 23:29:06,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:29:06,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:29:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:29:06,707 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 23:29:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:07,074 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-10-28 23:29:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:29:07,075 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 23:29:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:07,076 INFO L225 Difference]: With dead ends: 72 [2021-10-28 23:29:07,076 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 23:29:07,077 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 23:29:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 23:29:07,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-10-28 23:29:07,082 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 23:29:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-28 23:29:07,083 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 15 [2021-10-28 23:29:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:07,083 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-28 23:29:07,084 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 23:29:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-10-28 23:29:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:29:07,085 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:07,085 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:29:07,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:07,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:07,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:07,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:07,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1917592711, now seen corresponding path program 2 times [2021-10-28 23:29:07,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:07,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508578292] [2021-10-28 23:29:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:07,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:07,546 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 23:29:07,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:07,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508578292] [2021-10-28 23:29:07,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508578292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:07,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102924439] [2021-10-28 23:29:07,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:07,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:07,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:07,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:07,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:29:07,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:29:07,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:07,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:29:07,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:07,733 INFO L354 Elim1Store]: treesize reduction 89, result has 18.3 percent of original size [2021-10-28 23:29:07,733 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 23:29:07,746 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 23:29:07,746 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 23:29:08,768 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 23:29:08,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102924439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:08,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:08,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2021-10-28 23:29:08,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006028088] [2021-10-28 23:29:08,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:29:08,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:29:08,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:29:08,771 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 23:29:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:08,884 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-10-28 23:29:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:29:08,885 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 23:29:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:08,886 INFO L225 Difference]: With dead ends: 71 [2021-10-28 23:29:08,887 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 23:29:08,887 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 23:29:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 23:29:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-10-28 23:29:08,892 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 23:29:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-10-28 23:29:08,893 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 18 [2021-10-28 23:29:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:08,893 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-10-28 23:29:08,894 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 23:29:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-10-28 23:29:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:29:08,895 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:08,895 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 23:29:08,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:09,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:09,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:09,097 INFO L85 PathProgramCache]: Analyzing trace with hash 421781908, now seen corresponding path program 1 times [2021-10-28 23:29:09,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:09,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454112120] [2021-10-28 23:29:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:09,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:09,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:09,225 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 23:29:09,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:09,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454112120] [2021-10-28 23:29:09,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454112120] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:09,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:29:09,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:29:09,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459276055] [2021-10-28 23:29:09,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:29:09,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:29:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:29:09,237 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 23:29:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:09,462 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-10-28 23:29:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:29:09,463 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 23:29:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:09,464 INFO L225 Difference]: With dead ends: 68 [2021-10-28 23:29:09,464 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 23:29:09,465 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 23:29:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 23:29:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-10-28 23:29:09,469 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 23:29:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-10-28 23:29:09,470 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 23 [2021-10-28 23:29:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:09,471 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-10-28 23:29:09,471 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 23:29:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-10-28 23:29:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:29:09,472 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:09,472 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 23:29:09,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:29:09,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:09,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:09,473 INFO L85 PathProgramCache]: Analyzing trace with hash 421781909, now seen corresponding path program 1 times [2021-10-28 23:29:09,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:09,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226909156] [2021-10-28 23:29:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:09,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:09,623 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 23:29:09,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:09,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226909156] [2021-10-28 23:29:09,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226909156] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:09,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879934581] [2021-10-28 23:29:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:09,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:09,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:09,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:29:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:09,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:29:09,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:09,837 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 23:29:09,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879934581] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:09,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:09,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2021-10-28 23:29:09,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89223317] [2021-10-28 23:29:09,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:29:09,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:09,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:29:09,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:29:09,840 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 23:29:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:10,050 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-10-28 23:29:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:29:10,050 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 23:29:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:10,052 INFO L225 Difference]: With dead ends: 73 [2021-10-28 23:29:10,052 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 23:29:10,052 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 23:29:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 23:29:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-10-28 23:29:10,057 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 23:29:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-10-28 23:29:10,058 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 23 [2021-10-28 23:29:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:10,058 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-10-28 23:29:10,058 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 23:29:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-10-28 23:29:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:29:10,059 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:10,060 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 23:29:10,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:10,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:10,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:10,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash -16477362, now seen corresponding path program 2 times [2021-10-28 23:29:10,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:10,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326758638] [2021-10-28 23:29:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:10,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:10,447 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 23:29:10,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:10,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326758638] [2021-10-28 23:29:10,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326758638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:10,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924857995] [2021-10-28 23:29:10,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:10,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:10,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:10,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:10,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:29:10,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:29:10,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:10,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 23:29:10,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:10,656 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-28 23:29:10,657 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 23:29:10,923 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 23:29:10,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924857995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:10,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:10,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2021-10-28 23:29:10,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694915964] [2021-10-28 23:29:10,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:29:10,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:29:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:29:10,932 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 23:29:11,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:11,059 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-10-28 23:29:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:29:11,061 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 23:29:11,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:11,062 INFO L225 Difference]: With dead ends: 78 [2021-10-28 23:29:11,062 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 23:29:11,063 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 23:29:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 23:29:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-10-28 23:29:11,069 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 23:29:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-10-28 23:29:11,075 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 26 [2021-10-28 23:29:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:11,077 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-10-28 23:29:11,077 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 23:29:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-10-28 23:29:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 23:29:11,078 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:11,078 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 23:29:11,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:11,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:11,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -510798198, now seen corresponding path program 1 times [2021-10-28 23:29:11,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:11,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953781301] [2021-10-28 23:29:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:11,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:11,392 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 23:29:11,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:11,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953781301] [2021-10-28 23:29:11,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953781301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:11,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448949187] [2021-10-28 23:29:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:11,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:11,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:11,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:29:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:11,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:29:11,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:11,638 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 23:29:11,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448949187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:11,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:11,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-10-28 23:29:11,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126628992] [2021-10-28 23:29:11,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:29:11,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:29:11,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:29:11,640 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 23:29:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:11,788 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-10-28 23:29:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:29:11,789 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 23:29:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:11,790 INFO L225 Difference]: With dead ends: 78 [2021-10-28 23:29:11,790 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 23:29:11,790 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 23:29:11,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 23:29:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-28 23:29:11,795 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 23:29:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-10-28 23:29:11,796 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 27 [2021-10-28 23:29:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:11,796 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-10-28 23:29:11,797 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 23:29:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-10-28 23:29:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:29:11,798 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:11,798 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 23:29:11,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:12,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:29:12,026 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1612905533, now seen corresponding path program 2 times [2021-10-28 23:29:12,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:12,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109298206] [2021-10-28 23:29:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:12,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:12,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:12,164 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 23:29:12,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:12,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109298206] [2021-10-28 23:29:12,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109298206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:12,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602944876] [2021-10-28 23:29:12,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:12,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:12,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:12,167 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:12,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:29:12,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:29:12,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:12,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:29:12,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:12,393 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-28 23:29:12,393 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 23:29:22,169 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 23:29:22,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602944876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:22,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:22,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2021-10-28 23:29:22,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548493372] [2021-10-28 23:29:22,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:29:22,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:29:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:29:22,171 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 23:29:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:22,218 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2021-10-28 23:29:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:29:22,219 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 23:29:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:22,220 INFO L225 Difference]: With dead ends: 75 [2021-10-28 23:29:22,220 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 23:29:22,221 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 23:29:22,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 23:29:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-28 23:29:22,225 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 23:29:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-10-28 23:29:22,226 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 30 [2021-10-28 23:29:22,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:22,227 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-10-28 23:29:22,227 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 23:29:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-10-28 23:29:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:29:22,228 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:22,229 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 23:29:22,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:22,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:22,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:22,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:22,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1612905532, now seen corresponding path program 1 times [2021-10-28 23:29:22,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:22,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210260208] [2021-10-28 23:29:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:22,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:22,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:22,565 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 23:29:22,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:22,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210260208] [2021-10-28 23:29:22,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210260208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:22,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596669281] [2021-10-28 23:29:22,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:22,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:22,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:22,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:22,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:29:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:22,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:29:22,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:22,913 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 23:29:22,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596669281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:22,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:22,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-10-28 23:29:22,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130991390] [2021-10-28 23:29:22,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:29:22,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:22,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:29:22,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:29:22,920 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 23:29:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:23,062 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-10-28 23:29:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:29:23,063 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 23:29:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:23,064 INFO L225 Difference]: With dead ends: 80 [2021-10-28 23:29:23,064 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 23:29:23,065 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 23:29:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 23:29:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-10-28 23:29:23,082 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 23:29:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-10-28 23:29:23,084 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 30 [2021-10-28 23:29:23,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:23,085 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-10-28 23:29:23,085 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 23:29:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-10-28 23:29:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 23:29:23,087 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:23,088 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 23:29:23,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:23,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:29:23,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash 532455403, now seen corresponding path program 2 times [2021-10-28 23:29:23,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:23,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067743844] [2021-10-28 23:29:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:23,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:23,404 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 23:29:23,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:23,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067743844] [2021-10-28 23:29:23,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067743844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:23,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329455209] [2021-10-28 23:29:23,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:23,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:23,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:23,408 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:23,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:29:23,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:29:23,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:23,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:29:23,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:23,788 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 23:29:23,788 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 23:29:23,793 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 23:29:24,840 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 23:29:24,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329455209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:24,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:24,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2021-10-28 23:29:24,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719296367] [2021-10-28 23:29:24,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:29:24,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:24,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:29:24,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:29:24,845 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 23:29:24,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:24,922 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-10-28 23:29:24,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:29:24,923 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 23:29:24,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:24,924 INFO L225 Difference]: With dead ends: 81 [2021-10-28 23:29:24,924 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 23:29:24,924 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 23:29:24,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 23:29:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-10-28 23:29:24,926 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 23:29:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-10-28 23:29:24,927 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 33 [2021-10-28 23:29:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:24,927 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-10-28 23:29:24,927 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 23:29:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-10-28 23:29:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 23:29:24,929 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:24,929 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 23:29:24,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:25,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 23:29:25,129 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1353588722, now seen corresponding path program 1 times [2021-10-28 23:29:25,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:25,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274257270] [2021-10-28 23:29:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:25,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:25,235 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 23:29:25,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:25,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274257270] [2021-10-28 23:29:25,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274257270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:25,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463086189] [2021-10-28 23:29:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:25,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:25,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:25,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:29:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:25,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:29:25,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:25,656 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 23:29:25,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463086189] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:25,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:25,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-10-28 23:29:25,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567047297] [2021-10-28 23:29:25,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:29:25,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:29:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:29:25,658 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 23:29:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:25,753 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-10-28 23:29:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:29:25,753 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 23:29:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:25,754 INFO L225 Difference]: With dead ends: 84 [2021-10-28 23:29:25,754 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 23:29:25,754 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 23:29:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 23:29:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-10-28 23:29:25,757 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 23:29:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-10-28 23:29:25,757 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 37 [2021-10-28 23:29:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:25,758 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-10-28 23:29:25,758 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 23:29:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-10-28 23:29:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 23:29:25,759 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:25,759 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 23:29:25,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:25,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 23:29:25,973 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:25,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1899534855, now seen corresponding path program 2 times [2021-10-28 23:29:25,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:25,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992007299] [2021-10-28 23:29:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:25,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:26,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:26,082 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 23:29:26,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:26,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992007299] [2021-10-28 23:29:26,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992007299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:26,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893037846] [2021-10-28 23:29:26,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:26,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:26,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:26,085 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:26,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:29:26,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:29:26,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:26,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 23:29:26,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:26,505 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-28 23:29:26,506 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 23:29:26,893 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 23:29:26,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893037846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:26,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:26,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2021-10-28 23:29:26,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645000616] [2021-10-28 23:29:26,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:29:26,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:29:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:29:26,895 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 23:29:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:27,064 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2021-10-28 23:29:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:29:27,065 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 23:29:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:27,066 INFO L225 Difference]: With dead ends: 83 [2021-10-28 23:29:27,066 INFO L226 Difference]: Without dead ends: 83 [2021-10-28 23:29:27,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:29:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-28 23:29:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-10-28 23:29:27,069 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 23:29:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-10-28 23:29:27,070 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 40 [2021-10-28 23:29:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:27,070 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-10-28 23:29:27,070 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 23:29:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-10-28 23:29:27,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 23:29:27,071 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:27,072 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 23:29:27,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:27,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 23:29:27,272 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1243961614, now seen corresponding path program 1 times [2021-10-28 23:29:27,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:27,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752579187] [2021-10-28 23:29:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:27,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:27,380 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 23:29:27,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:27,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752579187] [2021-10-28 23:29:27,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752579187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:27,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762743542] [2021-10-28 23:29:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:27,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:27,382 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:27,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:29:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:29:27,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:27,798 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 23:29:27,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762743542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:27,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:27,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-10-28 23:29:27,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655691745] [2021-10-28 23:29:27,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:29:27,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:27,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:29:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:29:27,800 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 23:29:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:27,943 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2021-10-28 23:29:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:29:27,943 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 23:29:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:27,944 INFO L225 Difference]: With dead ends: 86 [2021-10-28 23:29:27,945 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 23:29:27,945 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 23:29:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 23:29:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-10-28 23:29:27,948 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 23:29:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-10-28 23:29:27,949 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 41 [2021-10-28 23:29:27,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:27,949 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-10-28 23:29:27,950 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 23:29:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-10-28 23:29:27,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 23:29:27,951 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:27,951 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 23:29:27,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:28,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:28,164 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:28,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1366408299, now seen corresponding path program 2 times [2021-10-28 23:29:28,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:28,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345691031] [2021-10-28 23:29:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:28,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 23:29:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:28,332 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 23:29:28,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:28,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345691031] [2021-10-28 23:29:28,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345691031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:28,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881737626] [2021-10-28 23:29:28,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:28,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:28,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:28,334 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:28,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 23:29:28,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:29:28,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:28,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 23:29:28,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:28,746 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 23:29:28,746 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 23:29:28,750 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 23:29:30,440 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 23:29:30,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881737626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:30,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:30,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2021-10-28 23:29:30,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079930668] [2021-10-28 23:29:30,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 23:29:30,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:30,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 23:29:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:29:30,442 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 23:29:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:31,076 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-10-28 23:29:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 23:29:31,077 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 23:29:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:31,078 INFO L225 Difference]: With dead ends: 88 [2021-10-28 23:29:31,078 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 23:29:31,079 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 23:29:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 23:29:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-10-28 23:29:31,082 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 23:29:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-10-28 23:29:31,083 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 44 [2021-10-28 23:29:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:31,084 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-10-28 23:29:31,084 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 23:29:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-10-28 23:29:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 23:29:31,085 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:31,085 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 23:29:31,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:31,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 23:29:31,293 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1242834180, now seen corresponding path program 1 times [2021-10-28 23:29:31,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:31,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452624021] [2021-10-28 23:29:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:31,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:31,383 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 23:29:31,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:31,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452624021] [2021-10-28 23:29:31,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452624021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:31,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827359993] [2021-10-28 23:29:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:31,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:31,385 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:31,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 23:29:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:31,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:29:31,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:32,068 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 23:29:32,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827359993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:32,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:32,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 15 [2021-10-28 23:29:32,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35242310] [2021-10-28 23:29:32,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:29:32,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:29:32,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:29:32,070 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 23:29:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:32,189 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-10-28 23:29:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:29:32,190 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 23:29:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:32,190 INFO L225 Difference]: With dead ends: 98 [2021-10-28 23:29:32,191 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 23:29:32,191 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 23:29:32,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 23:29:32,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2021-10-28 23:29:32,194 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 23:29:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-10-28 23:29:32,195 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 51 [2021-10-28 23:29:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:32,195 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-10-28 23:29:32,195 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 23:29:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-10-28 23:29:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 23:29:32,196 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:32,196 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 23:29:32,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:32,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 23:29:32,405 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash 968105693, now seen corresponding path program 2 times [2021-10-28 23:29:32,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:32,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915024838] [2021-10-28 23:29:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:32,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:32,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:32,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:32,579 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 23:29:32,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:32,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915024838] [2021-10-28 23:29:32,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915024838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:32,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703251734] [2021-10-28 23:29:32,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:32,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:32,581 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:32,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 23:29:33,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:29:33,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:33,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:29:33,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:33,181 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-28 23:29:33,181 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 23:29:49,248 INFO L354 Elim1Store]: treesize reduction 114, result has 35.2 percent of original size [2021-10-28 23:29:49,248 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 23:29:50,567 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 23:29:50,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703251734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:50,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:50,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2021-10-28 23:29:50,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060197038] [2021-10-28 23:29:50,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:29:50,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:29:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:29:50,569 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 23:29:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:50,719 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-10-28 23:29:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:29:50,726 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 23:29:50,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:50,727 INFO L225 Difference]: With dead ends: 91 [2021-10-28 23:29:50,727 INFO L226 Difference]: Without dead ends: 91 [2021-10-28 23:29:50,728 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 23:29:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-28 23:29:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-10-28 23:29:50,731 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 23:29:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-10-28 23:29:50,731 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 59 [2021-10-28 23:29:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:50,732 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-10-28 23:29:50,732 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 23:29:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-10-28 23:29:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 23:29:50,733 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:50,733 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 23:29:50,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:50,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 23:29:50,947 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash 968105694, now seen corresponding path program 1 times [2021-10-28 23:29:50,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:50,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678059014] [2021-10-28 23:29:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:50,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:51,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:51,150 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 23:29:51,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:51,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678059014] [2021-10-28 23:29:51,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678059014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:51,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453242107] [2021-10-28 23:29:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:51,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:51,151 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:51,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 23:29:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:51,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:29:51,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:51,912 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 23:29:51,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453242107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:51,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:51,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-10-28 23:29:51,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981095530] [2021-10-28 23:29:51,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:29:51,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:51,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:29:51,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:29:51,914 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 23:29:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:52,013 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-10-28 23:29:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:29:52,013 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 23:29:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:52,014 INFO L225 Difference]: With dead ends: 94 [2021-10-28 23:29:52,014 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 23:29:52,014 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 23:29:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 23:29:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-10-28 23:29:52,017 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 23:29:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-10-28 23:29:52,018 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 59 [2021-10-28 23:29:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:52,018 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-28 23:29:52,019 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 23:29:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-10-28 23:29:52,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-28 23:29:52,019 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:52,020 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 23:29:52,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:52,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 23:29:52,226 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:52,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash -317183977, now seen corresponding path program 2 times [2021-10-28 23:29:52,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:52,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080888280] [2021-10-28 23:29:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:52,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:52,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:52,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:52,357 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 23:29:52,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:52,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080888280] [2021-10-28 23:29:52,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080888280] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:52,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042570340] [2021-10-28 23:29:52,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:52,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:52,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:52,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:52,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 23:29:53,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:29:53,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:53,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 23:29:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:53,222 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 23:29:53,223 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 23:29:53,227 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 23:29:55,025 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-10-28 23:29:55,025 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 23:29:55,122 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 23:29:55,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042570340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:55,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:55,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2021-10-28 23:29:55,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663223146] [2021-10-28 23:29:55,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:29:55,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:29:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:29:55,124 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 23:29:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:55,294 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-10-28 23:29:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:29:55,306 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 23:29:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:55,307 INFO L225 Difference]: With dead ends: 101 [2021-10-28 23:29:55,307 INFO L226 Difference]: Without dead ends: 101 [2021-10-28 23:29:55,307 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 23:29:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-28 23:29:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2021-10-28 23:29:55,310 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 23:29:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2021-10-28 23:29:55,311 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 62 [2021-10-28 23:29:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:55,312 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2021-10-28 23:29:55,312 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 23:29:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2021-10-28 23:29:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 23:29:55,313 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:55,313 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 23:29:55,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:55,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:55,529 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:55,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1242768695, now seen corresponding path program 1 times [2021-10-28 23:29:55,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:55,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40893287] [2021-10-28 23:29:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:55,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,609 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 23:29:55,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:55,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40893287] [2021-10-28 23:29:55,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40893287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:55,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:29:55,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:29:55,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032838175] [2021-10-28 23:29:55,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:29:55,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:55,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:29:55,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:29:55,611 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 23:29:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:55,709 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2021-10-28 23:29:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:29:55,709 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 23:29:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:55,710 INFO L225 Difference]: With dead ends: 95 [2021-10-28 23:29:55,711 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 23:29:55,711 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 23:29:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 23:29:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-10-28 23:29:55,714 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 23:29:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2021-10-28 23:29:55,715 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 63 [2021-10-28 23:29:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:55,715 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2021-10-28 23:29:55,715 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 23:29:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2021-10-28 23:29:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 23:29:55,716 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:55,716 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 23:29:55,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:29:55,717 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:55,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:55,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1242768694, now seen corresponding path program 1 times [2021-10-28 23:29:55,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:55,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987843867] [2021-10-28 23:29:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:55,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:55,817 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 23:29:55,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:55,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987843867] [2021-10-28 23:29:55,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987843867] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:55,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279189771] [2021-10-28 23:29:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:55,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:55,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:55,822 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:55,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 23:29:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:56,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:29:56,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:56,764 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 23:29:56,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279189771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:56,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:56,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2021-10-28 23:29:56,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671946393] [2021-10-28 23:29:56,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:29:56,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:56,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:29:56,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:29:56,767 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 23:29:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:56,858 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-10-28 23:29:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:29:56,859 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 23:29:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:56,860 INFO L225 Difference]: With dead ends: 104 [2021-10-28 23:29:56,860 INFO L226 Difference]: Without dead ends: 104 [2021-10-28 23:29:56,860 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 23:29:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-28 23:29:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2021-10-28 23:29:56,862 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 23:29:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2021-10-28 23:29:56,863 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 63 [2021-10-28 23:29:56,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:56,864 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2021-10-28 23:29:56,864 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 23:29:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2021-10-28 23:29:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-28 23:29:56,864 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:56,864 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 23:29:56,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:57,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 23:29:57,065 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:57,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash 446605052, now seen corresponding path program 2 times [2021-10-28 23:29:57,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:57,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969813943] [2021-10-28 23:29:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:57,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:57,193 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 23:29:57,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:57,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969813943] [2021-10-28 23:29:57,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969813943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:57,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063302506] [2021-10-28 23:29:57,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:57,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:57,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:57,195 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:57,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 23:29:57,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:29:57,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:29:57,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:29:57,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:58,091 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 23:29:58,118 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 23:29:58,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063302506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:29:58,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:29:58,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2021-10-28 23:29:58,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923143095] [2021-10-28 23:29:58,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:29:58,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:29:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:29:58,121 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 23:29:58,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:58,157 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2021-10-28 23:29:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:29:58,159 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 23:29:58,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:58,160 INFO L225 Difference]: With dead ends: 103 [2021-10-28 23:29:58,160 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 23:29:58,160 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 23:29:58,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 23:29:58,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-10-28 23:29:58,163 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 23:29:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-28 23:29:58,163 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 68 [2021-10-28 23:29:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:58,164 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-28 23:29:58,164 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 23:29:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-28 23:29:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 23:29:58,164 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:58,164 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 23:29:58,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:58,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:58,365 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash -860049249, now seen corresponding path program 1 times [2021-10-28 23:29:58,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:58,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217264278] [2021-10-28 23:29:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:58,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:58,481 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 23:29:58,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:58,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217264278] [2021-10-28 23:29:58,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217264278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:58,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824652950] [2021-10-28 23:29:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:58,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:58,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:58,484 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:29:58,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 23:29:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:59,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:29:59,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:29:59,492 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 23:29:59,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824652950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:59,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:29:59,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-10-28 23:29:59,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329672194] [2021-10-28 23:29:59,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:29:59,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:29:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:29:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:29:59,494 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 23:29:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:29:59,626 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-10-28 23:29:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:29:59,626 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 23:29:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:29:59,627 INFO L225 Difference]: With dead ends: 110 [2021-10-28 23:29:59,627 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 23:29:59,628 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 23:29:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 23:29:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2021-10-28 23:29:59,631 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 23:29:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-10-28 23:29:59,632 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 72 [2021-10-28 23:29:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:29:59,632 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-10-28 23:29:59,632 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 23:29:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-10-28 23:29:59,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 23:29:59,633 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:29:59,633 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 23:29:59,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:29:59,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:59,849 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:29:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:29:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1537768621, now seen corresponding path program 2 times [2021-10-28 23:29:59,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:29:59,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892714733] [2021-10-28 23:29:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:29:59,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:29:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:29:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:29:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:29:59,992 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 23:29:59,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:29:59,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892714733] [2021-10-28 23:29:59,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892714733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:29:59,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250467552] [2021-10-28 23:29:59,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:29:59,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:29:59,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:29:59,994 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:00,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 23:30:01,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:30:01,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:01,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:30:01,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:01,238 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 23:30:01,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250467552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:01,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:01,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-10-28 23:30:01,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847182042] [2021-10-28 23:30:01,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:30:01,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:01,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:30:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:30:01,240 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 23:30:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:01,338 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2021-10-28 23:30:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:30:01,339 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 23:30:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:01,340 INFO L225 Difference]: With dead ends: 115 [2021-10-28 23:30:01,340 INFO L226 Difference]: Without dead ends: 115 [2021-10-28 23:30:01,340 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 23:30:01,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-28 23:30:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2021-10-28 23:30:01,343 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 23:30:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2021-10-28 23:30:01,344 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 77 [2021-10-28 23:30:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:01,344 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2021-10-28 23:30:01,344 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 23:30:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2021-10-28 23:30:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-28 23:30:01,346 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:01,346 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 23:30:01,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:01,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:01,547 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1675622049, now seen corresponding path program 3 times [2021-10-28 23:30:01,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:01,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053451116] [2021-10-28 23:30:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:01,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:01,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:30:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:01,691 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 23:30:01,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:01,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053451116] [2021-10-28 23:30:01,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053451116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:01,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238228725] [2021-10-28 23:30:01,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:30:01,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:01,693 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:01,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:30:02,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 23:30:02,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:02,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 23:30:02,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:02,665 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-10-28 23:30:02,665 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 23:30:13,969 INFO L354 Elim1Store]: treesize reduction 72, result has 40.5 percent of original size [2021-10-28 23:30:13,970 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 23:30:13,988 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:30:13,988 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 23:30:14,238 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 23:30:14,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238228725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:14,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:14,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-10-28 23:30:14,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314769808] [2021-10-28 23:30:14,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 23:30:14,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 23:30:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:30:14,240 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 23:30:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:15,063 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2021-10-28 23:30:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:30:15,063 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 23:30:15,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:15,071 INFO L225 Difference]: With dead ends: 132 [2021-10-28 23:30:15,071 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 23:30:15,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-10-28 23:30:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 23:30:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-10-28 23:30:15,096 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 23:30:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2021-10-28 23:30:15,098 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 82 [2021-10-28 23:30:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:15,098 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2021-10-28 23:30:15,099 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 23:30:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2021-10-28 23:30:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-28 23:30:15,101 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:15,101 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 23:30:15,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:15,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-28 23:30:15,316 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:15,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1670701492, now seen corresponding path program 1 times [2021-10-28 23:30:15,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:15,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499780091] [2021-10-28 23:30:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:15,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:15,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:15,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:30:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:15,468 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 23:30:15,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:15,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499780091] [2021-10-28 23:30:15,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499780091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:15,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712358266] [2021-10-28 23:30:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:15,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:15,470 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:15,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 23:30:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:16,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:30:16,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:17,020 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 23:30:17,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712358266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:17,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:17,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-10-28 23:30:17,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790152800] [2021-10-28 23:30:17,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:30:17,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:30:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:30:17,022 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 23:30:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:17,091 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2021-10-28 23:30:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:30:17,091 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 23:30:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:17,092 INFO L225 Difference]: With dead ends: 129 [2021-10-28 23:30:17,092 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 23:30:17,092 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 23:30:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 23:30:17,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2021-10-28 23:30:17,095 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 23:30:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-10-28 23:30:17,096 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 88 [2021-10-28 23:30:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:17,097 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-10-28 23:30:17,097 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 23:30:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-10-28 23:30:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 23:30:17,098 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:17,098 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 23:30:17,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:17,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-28 23:30:17,309 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2102210110, now seen corresponding path program 2 times [2021-10-28 23:30:17,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:17,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099449598] [2021-10-28 23:30:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:17,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:30:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:17,467 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 23:30:17,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:17,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099449598] [2021-10-28 23:30:17,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099449598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:17,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859911502] [2021-10-28 23:30:17,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:30:17,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:17,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:17,469 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:17,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 23:30:18,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:30:18,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:18,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:30:18,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:19,034 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 23:30:19,137 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 23:30:19,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859911502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:19,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:19,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2021-10-28 23:30:19,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753812868] [2021-10-28 23:30:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 23:30:19,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 23:30:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:30:19,138 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 23:30:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:19,464 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2021-10-28 23:30:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 23:30:19,465 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 23:30:19,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:19,466 INFO L225 Difference]: With dead ends: 133 [2021-10-28 23:30:19,466 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 23:30:19,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-10-28 23:30:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 23:30:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2021-10-28 23:30:19,469 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 23:30:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2021-10-28 23:30:19,471 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 93 [2021-10-28 23:30:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:19,471 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2021-10-28 23:30:19,471 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 23:30:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2021-10-28 23:30:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 23:30:19,472 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:19,473 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 23:30:19,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:19,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 23:30:19,692 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash 757483543, now seen corresponding path program 4 times [2021-10-28 23:30:19,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:19,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137426480] [2021-10-28 23:30:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:19,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:19,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:30:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:19,864 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 23:30:19,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:19,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137426480] [2021-10-28 23:30:19,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137426480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:19,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442534524] [2021-10-28 23:30:19,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:30:19,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:19,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:19,867 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:19,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 23:30:21,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:30:21,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:21,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:30:21,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:21,266 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 23:30:21,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442534524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:21,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:21,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-10-28 23:30:21,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485899117] [2021-10-28 23:30:21,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:30:21,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:30:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:30:21,267 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 23:30:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:21,395 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2021-10-28 23:30:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:30:21,396 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 23:30:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:21,397 INFO L225 Difference]: With dead ends: 138 [2021-10-28 23:30:21,397 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 23:30:21,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:30:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 23:30:21,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2021-10-28 23:30:21,401 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 23:30:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2021-10-28 23:30:21,402 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 102 [2021-10-28 23:30:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:21,402 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2021-10-28 23:30:21,403 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 23:30:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2021-10-28 23:30:21,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-28 23:30:21,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:21,404 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 23:30:21,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:21,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 23:30:21,617 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:21,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1289746523, now seen corresponding path program 5 times [2021-10-28 23:30:21,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:21,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570321433] [2021-10-28 23:30:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:21,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:30:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:21,825 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 23:30:21,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:21,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570321433] [2021-10-28 23:30:21,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570321433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:21,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295241559] [2021-10-28 23:30:21,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:30:21,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:21,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:21,827 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:21,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 23:30:23,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-28 23:30:23,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:23,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:30:23,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:23,976 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 23:30:23,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295241559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:23,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:23,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-10-28 23:30:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317969284] [2021-10-28 23:30:23,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:30:23,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:30:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:30:23,979 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 23:30:24,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:24,115 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2021-10-28 23:30:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:30:24,116 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 23:30:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:24,117 INFO L225 Difference]: With dead ends: 139 [2021-10-28 23:30:24,117 INFO L226 Difference]: Without dead ends: 139 [2021-10-28 23:30:24,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:30:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-28 23:30:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-10-28 23:30:24,121 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 23:30:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2021-10-28 23:30:24,122 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 107 [2021-10-28 23:30:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:24,122 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2021-10-28 23:30:24,123 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 23:30:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2021-10-28 23:30:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-28 23:30:24,124 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:24,124 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 23:30:24,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:24,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 23:30:24,347 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash -524955433, now seen corresponding path program 6 times [2021-10-28 23:30:24,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:24,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728139747] [2021-10-28 23:30:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:24,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-10-28 23:30:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:24,908 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 23:30:24,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:24,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728139747] [2021-10-28 23:30:24,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728139747] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:24,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380627173] [2021-10-28 23:30:24,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:30:24,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:24,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:24,911 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:24,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 23:30:26,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-28 23:30:26,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:26,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 23:30:26,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:26,227 INFO L354 Elim1Store]: treesize reduction 86, result has 21.1 percent of original size [2021-10-28 23:30:26,227 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 23:30:26,231 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 23:30:29,098 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-10-28 23:30:29,098 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 23:30:29,622 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 23:30:29,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380627173] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:30:29,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:30:29,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 28 [2021-10-28 23:30:29,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933507574] [2021-10-28 23:30:29,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:30:29,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:30:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-10-28 23:30:29,624 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 23:30:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:29,915 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2021-10-28 23:30:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:30:29,915 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 23:30:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:29,916 INFO L225 Difference]: With dead ends: 138 [2021-10-28 23:30:29,916 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 23:30:29,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 23:30:29,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 23:30:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-10-28 23:30:29,920 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 23:30:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-10-28 23:30:29,921 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 112 [2021-10-28 23:30:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:29,922 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-10-28 23:30:29,922 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 23:30:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-10-28 23:30:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 23:30:29,923 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:29,923 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 23:30:29,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:30,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:30,125 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1387314960, now seen corresponding path program 1 times [2021-10-28 23:30:30,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:30,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335857361] [2021-10-28 23:30:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:30,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:30:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:30,276 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 23:30:30,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:30,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335857361] [2021-10-28 23:30:30,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335857361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:30,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679562126] [2021-10-28 23:30:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:30,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:30,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:30,278 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:30,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 23:30:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:31,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:30:31,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:31,980 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 23:30:31,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679562126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:31,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:31,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2021-10-28 23:30:31,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436181996] [2021-10-28 23:30:31,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:30:31,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:31,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:30:31,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:30:31,982 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 23:30:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:32,045 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2021-10-28 23:30:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:30:32,046 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 23:30:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:32,047 INFO L225 Difference]: With dead ends: 146 [2021-10-28 23:30:32,047 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 23:30:32,048 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 23:30:32,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 23:30:32,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2021-10-28 23:30:32,051 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 23:30:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2021-10-28 23:30:32,052 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 117 [2021-10-28 23:30:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:32,053 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2021-10-28 23:30:32,053 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 23:30:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2021-10-28 23:30:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-28 23:30:32,054 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:32,054 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 23:30:32,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:32,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-28 23:30:32,281 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:32,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:32,282 INFO L85 PathProgramCache]: Analyzing trace with hash -575903494, now seen corresponding path program 2 times [2021-10-28 23:30:32,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:32,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456509550] [2021-10-28 23:30:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:32,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:30:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:32,455 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 23:30:32,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:32,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456509550] [2021-10-28 23:30:32,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456509550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:32,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673758985] [2021-10-28 23:30:32,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:30:32,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:32,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:32,458 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:32,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 23:30:34,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:30:34,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:34,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:30:34,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:34,250 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 23:30:34,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673758985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:34,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:34,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2021-10-28 23:30:34,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419804956] [2021-10-28 23:30:34,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:30:34,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:30:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:30:34,252 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 23:30:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:34,360 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2021-10-28 23:30:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:30:34,360 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 23:30:34,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:34,362 INFO L225 Difference]: With dead ends: 151 [2021-10-28 23:30:34,362 INFO L226 Difference]: Without dead ends: 151 [2021-10-28 23:30:34,363 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 23:30:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-28 23:30:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-10-28 23:30:34,366 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 23:30:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2021-10-28 23:30:34,367 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 122 [2021-10-28 23:30:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:34,367 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2021-10-28 23:30:34,368 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 23:30:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2021-10-28 23:30:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 23:30:34,369 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:34,369 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 23:30:34,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:34,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:34,585 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash -371170992, now seen corresponding path program 3 times [2021-10-28 23:30:34,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:34,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818366735] [2021-10-28 23:30:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:34,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:30:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:34,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:34,781 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 23:30:34,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:34,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818366735] [2021-10-28 23:30:34,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818366735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:34,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482188521] [2021-10-28 23:30:34,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:30:34,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:34,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:34,783 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:34,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 23:30:36,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 23:30:36,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:36,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:30:36,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:36,540 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 23:30:36,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482188521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:36,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:36,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2021-10-28 23:30:36,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489744126] [2021-10-28 23:30:36,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:30:36,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:30:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:30:36,541 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 23:30:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:36,624 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2021-10-28 23:30:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 23:30:36,625 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 23:30:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:36,626 INFO L225 Difference]: With dead ends: 156 [2021-10-28 23:30:36,626 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:30:36,626 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 23:30:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:30:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 152. [2021-10-28 23:30:36,629 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 23:30:36,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-10-28 23:30:36,630 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 127 [2021-10-28 23:30:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:36,631 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-10-28 23:30:36,631 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 23:30:36,631 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-10-28 23:30:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-28 23:30:36,632 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:36,633 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 23:30:36,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:36,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-28 23:30:36,845 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1244147386, now seen corresponding path program 4 times [2021-10-28 23:30:36,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:36,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348503316] [2021-10-28 23:30:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:36,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:36,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:30:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:37,045 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 23:30:37,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:37,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348503316] [2021-10-28 23:30:37,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348503316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:37,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633036116] [2021-10-28 23:30:37,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 23:30:37,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:37,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:37,053 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:37,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 23:30:39,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 23:30:39,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:39,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:30:39,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:39,428 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 23:30:39,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633036116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:39,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:39,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2021-10-28 23:30:39,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257665008] [2021-10-28 23:30:39,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:30:39,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:30:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:30:39,430 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 23:30:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:39,521 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2021-10-28 23:30:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:30:39,521 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 23:30:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:39,523 INFO L225 Difference]: With dead ends: 161 [2021-10-28 23:30:39,523 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 23:30:39,523 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 23:30:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 23:30:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2021-10-28 23:30:39,528 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 23:30:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2021-10-28 23:30:39,529 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 132 [2021-10-28 23:30:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:39,530 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2021-10-28 23:30:39,530 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 23:30:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2021-10-28 23:30:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-28 23:30:39,532 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:39,532 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 23:30:39,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 23:30:39,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-28 23:30:39,745 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2070269040, now seen corresponding path program 5 times [2021-10-28 23:30:39,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:39,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442781682] [2021-10-28 23:30:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:39,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:30:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:39,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:39,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:39,950 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 23:30:39,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:39,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442781682] [2021-10-28 23:30:39,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442781682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:39,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179292487] [2021-10-28 23:30:39,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 23:30:39,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:39,961 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:39,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 23:30:57,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-10-28 23:30:57,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:30:57,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:30:57,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:30:58,176 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 23:30:58,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179292487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:58,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:30:58,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2021-10-28 23:30:58,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569856122] [2021-10-28 23:30:58,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:30:58,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:30:58,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:30:58,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:30:58,178 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 23:30:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:30:58,322 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2021-10-28 23:30:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:30:58,322 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 23:30:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:30:58,323 INFO L225 Difference]: With dead ends: 166 [2021-10-28 23:30:58,323 INFO L226 Difference]: Without dead ends: 166 [2021-10-28 23:30:58,324 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 23:30:58,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-28 23:30:58,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-10-28 23:30:58,327 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 23:30:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 166 transitions. [2021-10-28 23:30:58,329 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 166 transitions. Word has length 137 [2021-10-28 23:30:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:30:58,329 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 166 transitions. [2021-10-28 23:30:58,329 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 23:30:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 166 transitions. [2021-10-28 23:30:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-28 23:30:58,331 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:30:58,331 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 23:30:58,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-28 23:30:58,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-28 23:30:58,537 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:30:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:30:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1106756730, now seen corresponding path program 6 times [2021-10-28 23:30:58,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:30:58,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8913957] [2021-10-28 23:30:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:30:58,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:30:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:30:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:30:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:30:58,774 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 23:30:58,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:30:58,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8913957] [2021-10-28 23:30:58,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8913957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:30:58,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986029193] [2021-10-28 23:30:58,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 23:30:58,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:30:58,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:30:58,776 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:30:58,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 23:31:02,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-28 23:31:02,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:02,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:31:02,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:02,653 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 23:31:02,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986029193] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:02,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:02,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 14 [2021-10-28 23:31:02,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030545713] [2021-10-28 23:31:02,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 23:31:02,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:02,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 23:31:02,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:31:02,657 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 23:31:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:02,817 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2021-10-28 23:31:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:31:02,818 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 23:31:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:02,819 INFO L225 Difference]: With dead ends: 171 [2021-10-28 23:31:02,819 INFO L226 Difference]: Without dead ends: 171 [2021-10-28 23:31:02,820 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 23:31:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-28 23:31:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-10-28 23:31:02,824 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 23:31:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2021-10-28 23:31:02,825 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 142 [2021-10-28 23:31:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:02,826 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2021-10-28 23:31:02,826 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 23:31:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2021-10-28 23:31:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-28 23:31:02,827 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:02,827 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 23:31:02,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:03,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 23:31:03,041 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:31:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1612565040, now seen corresponding path program 7 times [2021-10-28 23:31:03,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:03,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924613625] [2021-10-28 23:31:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:03,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:31:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:03,311 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 23:31:03,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:03,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924613625] [2021-10-28 23:31:03,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924613625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:03,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78919410] [2021-10-28 23:31:03,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 23:31:03,313 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:03,314 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:03,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 23:31:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:05,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:31:05,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:05,577 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 23:31:05,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78919410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:05,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:05,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2021-10-28 23:31:05,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199711405] [2021-10-28 23:31:05,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:31:05,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:05,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:31:05,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:31:05,579 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 23:31:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:05,744 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2021-10-28 23:31:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:31:05,745 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 23:31:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:05,747 INFO L225 Difference]: With dead ends: 176 [2021-10-28 23:31:05,747 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 23:31:05,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:31:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 23:31:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2021-10-28 23:31:05,751 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 23:31:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 176 transitions. [2021-10-28 23:31:05,753 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 176 transitions. Word has length 147 [2021-10-28 23:31:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:05,753 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 176 transitions. [2021-10-28 23:31:05,753 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 23:31:05,753 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 176 transitions. [2021-10-28 23:31:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-10-28 23:31:05,754 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:05,755 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 23:31:05,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:05,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 23:31:05,955 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:31:05,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash -896062918, now seen corresponding path program 8 times [2021-10-28 23:31:05,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:05,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715062095] [2021-10-28 23:31:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:05,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 23:31:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:06,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:31:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:06,449 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 23:31:06,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:06,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715062095] [2021-10-28 23:31:06,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715062095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:06,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448050238] [2021-10-28 23:31:06,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:31:06,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:06,452 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:31:06,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 23:31:08,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:31:08,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:31:08,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:31:08,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:31:08,647 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 23:31:08,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448050238] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:31:08,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:31:08,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 16 [2021-10-28 23:31:08,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881611367] [2021-10-28 23:31:08,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:31:08,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:31:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:31:08,653 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 23:31:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:08,799 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2021-10-28 23:31:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:31:08,800 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 23:31:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:31:08,801 INFO L225 Difference]: With dead ends: 177 [2021-10-28 23:31:08,802 INFO L226 Difference]: Without dead ends: 177 [2021-10-28 23:31:08,802 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 23:31:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-10-28 23:31:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-10-28 23:31:08,808 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 23:31:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-10-28 23:31:08,810 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 152 [2021-10-28 23:31:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:31:08,810 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-10-28 23:31:08,811 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 23:31:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-10-28 23:31:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-28 23:31:08,812 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:31:08,812 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 23:31:08,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 23:31:09,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:31:09,027 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-10-28 23:31:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1136420880, now seen corresponding path program 9 times [2021-10-28 23:31:09,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:09,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194890066] [2021-10-28 23:31:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:09,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:09,138 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:09,274 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:09,274 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:31:09,276 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location getNumbers4Err0REQUIRES_VIOLATION [2021-10-28 23:31:09,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err1REQUIRES_VIOLATION [2021-10-28 23:31:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err2REQUIRES_VIOLATION [2021-10-28 23:31:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err3REQUIRES_VIOLATION [2021-10-28 23:31:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:31:09,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:31:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:31:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err0REQUIRES_VIOLATION [2021-10-28 23:31:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err1REQUIRES_VIOLATION [2021-10-28 23:31:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err2REQUIRES_VIOLATION [2021-10-28 23:31:09,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err3REQUIRES_VIOLATION [2021-10-28 23:31:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err0REQUIRES_VIOLATION [2021-10-28 23:31:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err1REQUIRES_VIOLATION [2021-10-28 23:31:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err2REQUIRES_VIOLATION [2021-10-28 23:31:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err3REQUIRES_VIOLATION [2021-10-28 23:31:09,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr0REQUIRES_VIOLATION [2021-10-28 23:31:09,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr1REQUIRES_VIOLATION [2021-10-28 23:31:09,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 23:31:09,285 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 23:31:09,290 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:31:09,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:31:09 BoogieIcfgContainer [2021-10-28 23:31:09,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:31:09,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:31:09,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:31:09,421 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:31:09,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:29:03" (3/4) ... [2021-10-28 23:31:09,428 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:31:09,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:31:09,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:31:09,552 INFO L168 Benchmark]: Toolchain (without parser) took 126888.59 ms. Allocated memory was 94.4 MB in the beginning and 520.1 MB in the end (delta: 425.7 MB). Free memory was 65.7 MB in the beginning and 318.2 MB in the end (delta: -252.5 MB). Peak memory consumption was 174.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:09,552 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:31:09,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.17 ms. Allocated memory is still 94.4 MB. Free memory was 65.5 MB in the beginning and 55.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:09,553 INFO L168 Benchmark]: Boogie Preprocessor took 40.72 ms. Allocated memory is still 94.4 MB. Free memory was 55.6 MB in the beginning and 53.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:09,554 INFO L168 Benchmark]: RCFGBuilder took 560.63 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.7 MB in the beginning and 86.7 MB in the end (delta: -33.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:09,559 INFO L168 Benchmark]: TraceAbstraction took 125935.75 ms. Allocated memory was 113.2 MB in the beginning and 520.1 MB in the end (delta: 406.8 MB). Free memory was 86.3 MB in the beginning and 326.6 MB in the end (delta: -240.3 MB). Peak memory consumption was 164.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:09,564 INFO L168 Benchmark]: Witness Printer took 129.62 ms. Allocated memory is still 520.1 MB. Free memory was 326.6 MB in the beginning and 318.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:09,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 94.4 MB. Free memory was 64.9 MB in the beginning and 64.9 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 206.17 ms. Allocated memory is still 94.4 MB. Free memory was 65.5 MB in the beginning and 55.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.72 ms. Allocated memory is still 94.4 MB. Free memory was 55.6 MB in the beginning and 53.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 560.63 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 53.7 MB in the beginning and 86.7 MB in the end (delta: -33.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 125935.75 ms. Allocated memory was 113.2 MB in the beginning and 520.1 MB in the end (delta: 406.8 MB). Free memory was 86.3 MB in the beginning and 326.6 MB in the end (delta: -240.3 MB). Peak memory consumption was 164.9 MB. Max. memory is 16.1 GB. * Witness Printer took 129.62 ms. Allocated memory is still 520.1 MB. Free memory was 326.6 MB in the beginning and 318.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 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: 125.7s, OverallIterations: 39, TraceHistogramMax: 10, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, 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, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3105 GetRequests, 2648 SyntacticMatches, 0 SemanticMatches, 457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 5.3s 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: 0.4s SsaConstructionTime, 21.2s SatisfiabilityAnalysisTime, 60.9s 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 23:31:09,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b5eb1e-91fd-4ed8-8747-b497f98a042b/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...