./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:43:27,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:43:27,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:43:27,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:43:27,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:43:27,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:43:27,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:43:27,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:43:27,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:43:27,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:43:27,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:43:27,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:43:27,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:43:27,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:43:27,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:43:27,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:43:27,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:43:27,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:43:27,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:43:27,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:43:27,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:43:27,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:43:27,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:43:27,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:43:27,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:43:27,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:43:27,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:43:27,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:43:27,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:43:27,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:43:27,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:43:27,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:43:27,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:43:27,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:43:27,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:43:27,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:43:27,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:43:27,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:43:27,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:43:27,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:43:27,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:43:27,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:43:27,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:43:27,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:43:27,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:43:27,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:43:27,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:43:27,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:43:27,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:43:27,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:43:27,478 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:43:27,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:43:27,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:43:27,480 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:43:27,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:43:27,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:43:27,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:43:27,481 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:43:27,481 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:43:27,481 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:43:27,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:43:27,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:43:27,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:43:27,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:43:27,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:43:27,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:43:27,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:43:27,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:43:27,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:43:27,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:43:27,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:43:27,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:43:27,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:43:27,484 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_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac [2021-11-19 04:43:27,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:43:27,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:43:27,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:43:27,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:43:27,778 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:43:27,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-11-19 04:43:27,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/data/d78583728/8eea549337df4e7d88b4ac9c7e233daa/FLAG1f513df07 [2021-11-19 04:43:28,277 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:43:28,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2021-11-19 04:43:28,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/data/d78583728/8eea549337df4e7d88b4ac9c7e233daa/FLAG1f513df07 [2021-11-19 04:43:28,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/data/d78583728/8eea549337df4e7d88b4ac9c7e233daa [2021-11-19 04:43:28,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:43:28,687 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:43:28,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:43:28,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:43:28,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:43:28,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:28,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@481329c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28, skipping insertion in model container [2021-11-19 04:43:28,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:28,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:43:28,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:43:28,899 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:43:28,914 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:43:28,957 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:43:28,977 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:43:28,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28 WrapperNode [2021-11-19 04:43:28,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:43:28,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:43:28,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:43:28,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:43:28,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:28,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:29,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:29,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:29,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:29,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:29,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:29,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:43:29,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:43:29,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:43:29,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:43:29,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (1/1) ... [2021-11-19 04:43:29,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:43:29,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:29,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:43:29,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:43:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:43:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:43:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-11-19 04:43:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2021-11-19 04:43:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2021-11-19 04:43:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2021-11-19 04:43:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:43:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-11-19 04:43:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-11-19 04:43:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:43:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2021-11-19 04:43:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:43:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2021-11-19 04:43:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:43:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:43:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2021-11-19 04:43:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:43:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:43:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:43:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:43:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:43:29,208 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:43:29,210 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:43:29,481 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:43:29,489 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:43:29,489 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 04:43:29,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:43:29 BoogieIcfgContainer [2021-11-19 04:43:29,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:43:29,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:43:29,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:43:29,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:43:29,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:43:28" (1/3) ... [2021-11-19 04:43:29,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9f78d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:43:29, skipping insertion in model container [2021-11-19 04:43:29,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:43:28" (2/3) ... [2021-11-19 04:43:29,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9f78d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:43:29, skipping insertion in model container [2021-11-19 04:43:29,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:43:29" (3/3) ... [2021-11-19 04:43:29,515 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2021-11-19 04:43:29,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:43:29,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-19 04:43:29,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:43:29,579 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 [2021-11-19 04:43:29,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-19 04:43:29,604 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) [2021-11-19 04:43:29,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:43:29,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:29,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:29,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468390, now seen corresponding path program 1 times [2021-11-19 04:43:29,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:29,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357917780] [2021-11-19 04:43:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:29,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:30,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:30,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357917780] [2021-11-19 04:43:30,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357917780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:30,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:30,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:43:30,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416587231] [2021-11-19 04:43:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:30,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:43:30,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:43:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:43:30,063 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) [2021-11-19 04:43:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:30,279 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-11-19 04:43:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:43:30,281 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 [2021-11-19 04:43:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:30,289 INFO L225 Difference]: With dead ends: 87 [2021-11-19 04:43:30,290 INFO L226 Difference]: Without dead ends: 84 [2021-11-19 04:43:30,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:30,295 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 61 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:30,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 75 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:43:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-19 04:43:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2021-11-19 04:43:30,336 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) [2021-11-19 04:43:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-11-19 04:43:30,341 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2021-11-19 04:43:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:30,342 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-11-19 04:43:30,342 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) [2021-11-19 04:43:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-11-19 04:43:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:43:30,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:30,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:30,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:43:30,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:30,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468391, now seen corresponding path program 1 times [2021-11-19 04:43:30,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:30,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974798405] [2021-11-19 04:43:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:30,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:30,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:30,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974798405] [2021-11-19 04:43:30,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974798405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:30,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:30,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:43:30,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470937746] [2021-11-19 04:43:30,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:30,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:43:30,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:43:30,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:30,651 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) [2021-11-19 04:43:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:30,860 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-11-19 04:43:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:43:30,861 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 [2021-11-19 04:43:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:30,866 INFO L225 Difference]: With dead ends: 69 [2021-11-19 04:43:30,866 INFO L226 Difference]: Without dead ends: 69 [2021-11-19 04:43:30,868 INFO L932 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 [2021-11-19 04:43:30,870 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 63 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:30,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 83 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-19 04:43:30,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-11-19 04:43:30,887 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) [2021-11-19 04:43:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-11-19 04:43:30,898 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 12 [2021-11-19 04:43:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:30,899 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-11-19 04:43:30,900 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) [2021-11-19 04:43:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-11-19 04:43:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:43:30,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:30,902 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:30,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:43:30,903 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:30,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:30,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1757784526, now seen corresponding path program 1 times [2021-11-19 04:43:30,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:30,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055740357] [2021-11-19 04:43:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:30,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:31,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:31,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055740357] [2021-11-19 04:43:31,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055740357] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:31,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94405842] [2021-11-19 04:43:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:31,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:31,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:31,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:31,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:43:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:31,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 04:43:31,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:31,415 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:43:31,416 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 2 case distinctions, treesize of input 21 treesize of output 24 [2021-11-19 04:43:31,431 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 25 treesize of output 23 [2021-11-19 04:43:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:31,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:32,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94405842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:32,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:32,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2021-11-19 04:43:32,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922071788] [2021-11-19 04:43:32,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:32,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 04:43:32,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 04:43:32,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:43:32,132 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:43:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:32,256 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2021-11-19 04:43:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:43:32,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2021-11-19 04:43:32,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:32,257 INFO L225 Difference]: With dead ends: 74 [2021-11-19 04:43:32,258 INFO L226 Difference]: Without dead ends: 74 [2021-11-19 04:43:32,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:43:32,259 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 3 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:32,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 215 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 73 Unchecked, 0.1s Time] [2021-11-19 04:43:32,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-19 04:43:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-19 04:43:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 62 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) [2021-11-19 04:43:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-11-19 04:43:32,267 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 15 [2021-11-19 04:43:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:32,267 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-11-19 04:43:32,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 04:43:32,268 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-11-19 04:43:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 04:43:32,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:32,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:32,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:32,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:32,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1275227987, now seen corresponding path program 1 times [2021-11-19 04:43:32,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:32,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866530845] [2021-11-19 04:43:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:32,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:32,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:32,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866530845] [2021-11-19 04:43:32,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866530845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:32,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790909927] [2021-11-19 04:43:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:32,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:32,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:32,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:32,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:43:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:32,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:43:32,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:32,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:32,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790909927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:32,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:32,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2021-11-19 04:43:32,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114879508] [2021-11-19 04:43:32,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:32,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:43:32,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:43:32,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:43:32,746 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:43:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:32,845 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2021-11-19 04:43:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:43:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-19 04:43:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:32,846 INFO L225 Difference]: With dead ends: 76 [2021-11-19 04:43:32,846 INFO L226 Difference]: Without dead ends: 76 [2021-11-19 04:43:32,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:43:32,848 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 15 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:32,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 301 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-19 04:43:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-11-19 04:43:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.4081632653061225) 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) [2021-11-19 04:43:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-11-19 04:43:32,855 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 20 [2021-11-19 04:43:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:32,855 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-11-19 04:43:32,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 04:43:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-11-19 04:43:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-19 04:43:32,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:32,858 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:32,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:33,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:33,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash -355499218, now seen corresponding path program 2 times [2021-11-19 04:43:33,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:33,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053428544] [2021-11-19 04:43:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:33,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:33,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:33,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053428544] [2021-11-19 04:43:33,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053428544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:33,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694989389] [2021-11-19 04:43:33,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:43:33,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:33,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:33,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:33,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:43:33,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:43:33,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:43:33,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 04:43:33,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:33,331 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:43:33,331 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 2 case distinctions, treesize of input 32 treesize of output 35 [2021-11-19 04:43:33,337 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:43:33,337 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 38 treesize of output 34 [2021-11-19 04:43:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 04:43:34,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:43:34,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694989389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:34,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:43:34,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-11-19 04:43:34,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889869182] [2021-11-19 04:43:34,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:34,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:43:34,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:43:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:43:34,327 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:34,331 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-11-19 04:43:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:43:34,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-11-19 04:43:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:34,334 INFO L225 Difference]: With dead ends: 81 [2021-11-19 04:43:34,334 INFO L226 Difference]: Without dead ends: 81 [2021-11-19 04:43:34,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:43:34,336 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:34,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2021-11-19 04:43:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-19 04:43:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2021-11-19 04:43:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.3877551020408163) 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) [2021-11-19 04:43:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-19 04:43:34,343 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 21 [2021-11-19 04:43:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:34,343 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-19 04:43:34,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:43:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-19 04:43:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:43:34,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:34,345 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:34,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:34,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:34,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash 502160116, now seen corresponding path program 2 times [2021-11-19 04:43:34,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:34,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235844155] [2021-11-19 04:43:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:34,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:34,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 04:43:34,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:34,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235844155] [2021-11-19 04:43:34,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235844155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:34,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:34,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:43:34,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129278156] [2021-11-19 04:43:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:34,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:43:34,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:43:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:43:34,649 INFO L87 Difference]: Start difference. First operand 75 states and 79 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) [2021-11-19 04:43:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:34,850 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-11-19 04:43:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:43:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-11-19 04:43:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:34,852 INFO L225 Difference]: With dead ends: 74 [2021-11-19 04:43:34,852 INFO L226 Difference]: Without dead ends: 74 [2021-11-19 04:43:34,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:43:34,853 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:34,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 214 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:34,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-19 04:43:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-19 04:43:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 62 states have internal predecessors, (67), 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) [2021-11-19 04:43:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-11-19 04:43:34,860 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 29 [2021-11-19 04:43:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:34,860 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-11-19 04:43:34,860 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) [2021-11-19 04:43:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-11-19 04:43:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:43:34,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:34,862 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:34,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:43:34,862 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash 502160117, now seen corresponding path program 1 times [2021-11-19 04:43:34,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:34,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163476432] [2021-11-19 04:43:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:34,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:35,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:35,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163476432] [2021-11-19 04:43:35,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163476432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:35,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029945069] [2021-11-19 04:43:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:35,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:35,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:35,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:35,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:43:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:35,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:43:35,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:35,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:35,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029945069] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:35,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:35,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-11-19 04:43:35,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530589877] [2021-11-19 04:43:35,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:35,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 04:43:35,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:35,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 04:43:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:43:35,278 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 04:43:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:35,617 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-11-19 04:43:35,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 04:43:35,617 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-11-19 04:43:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:35,618 INFO L225 Difference]: With dead ends: 92 [2021-11-19 04:43:35,618 INFO L226 Difference]: Without dead ends: 92 [2021-11-19 04:43:35,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2021-11-19 04:43:35,620 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 99 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:35,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 292 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-19 04:43:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-19 04:43:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 67 states have (on average 1.2686567164179106) 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) [2021-11-19 04:43:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-11-19 04:43:35,626 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 29 [2021-11-19 04:43:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:35,626 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-11-19 04:43:35,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 14 states have internal predecessors, (41), 2 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 04:43:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-11-19 04:43:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 04:43:35,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:35,628 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:35,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:35,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-19 04:43:35,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:35,852 INFO L85 PathProgramCache]: Analyzing trace with hash -554526955, now seen corresponding path program 2 times [2021-11-19 04:43:35,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:35,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765400166] [2021-11-19 04:43:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:35,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 126 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:36,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:36,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765400166] [2021-11-19 04:43:36,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765400166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:36,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809250830] [2021-11-19 04:43:36,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:43:36,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:36,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:36,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 04:43:36,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:43:36,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:43:36,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 04:43:36,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:36,251 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:43:36,251 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 2 case distinctions, treesize of input 12 treesize of output 16 [2021-11-19 04:43:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:36,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:43:36,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809250830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:36,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:43:36,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 22 [2021-11-19 04:43:36,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974239100] [2021-11-19 04:43:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:43:36,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:43:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-11-19 04:43:36,639 INFO L87 Difference]: Start difference. First operand 92 states and 96 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) [2021-11-19 04:43:36,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:36,765 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2021-11-19 04:43:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:43:36,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2021-11-19 04:43:36,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:36,767 INFO L225 Difference]: With dead ends: 99 [2021-11-19 04:43:36,767 INFO L226 Difference]: Without dead ends: 99 [2021-11-19 04:43:36,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-11-19 04:43:36,768 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:36,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 158 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-19 04:43:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2021-11-19 04:43:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.2608695652173914) 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) [2021-11-19 04:43:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-11-19 04:43:36,775 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 47 [2021-11-19 04:43:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:36,775 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-11-19 04:43:36,775 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) [2021-11-19 04:43:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-11-19 04:43:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 04:43:36,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:36,777 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:36,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:36,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:37,000 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash -10466397, now seen corresponding path program 1 times [2021-11-19 04:43:37,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:37,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739036047] [2021-11-19 04:43:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:37,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:37,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:37,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739036047] [2021-11-19 04:43:37,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739036047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:37,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:37,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:43:37,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556630491] [2021-11-19 04:43:37,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:37,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:43:37,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:37,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:43:37,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:37,085 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:43:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:37,165 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2021-11-19 04:43:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:43:37,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-11-19 04:43:37,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:37,167 INFO L225 Difference]: With dead ends: 93 [2021-11-19 04:43:37,167 INFO L226 Difference]: Without dead ends: 93 [2021-11-19 04:43:37,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:43:37,168 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 31 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:37,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-19 04:43:37,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-19 04:43:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 81 states have internal predecessors, (86), 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) [2021-11-19 04:43:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2021-11-19 04:43:37,174 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 48 [2021-11-19 04:43:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:37,175 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2021-11-19 04:43:37,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:43:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2021-11-19 04:43:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 04:43:37,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:37,177 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:37,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:43:37,177 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:37,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash -10466396, now seen corresponding path program 1 times [2021-11-19 04:43:37,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:37,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597414120] [2021-11-19 04:43:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:37,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:37,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:37,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597414120] [2021-11-19 04:43:37,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597414120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:37,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:37,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:43:37,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401752404] [2021-11-19 04:43:37,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:37,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:43:37,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:37,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:43:37,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:43:37,288 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:43:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:37,392 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-11-19 04:43:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:43:37,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-11-19 04:43:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:37,394 INFO L225 Difference]: With dead ends: 96 [2021-11-19 04:43:37,394 INFO L226 Difference]: Without dead ends: 96 [2021-11-19 04:43:37,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:43:37,395 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 67 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:37,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 112 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-19 04:43:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-11-19 04:43:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.2428571428571429) 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) [2021-11-19 04:43:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2021-11-19 04:43:37,400 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 48 [2021-11-19 04:43:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:37,401 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-11-19 04:43:37,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 04:43:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2021-11-19 04:43:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 04:43:37,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:37,403 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:37,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 04:43:37,403 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:37,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2035746631, now seen corresponding path program 1 times [2021-11-19 04:43:37,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:37,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695536222] [2021-11-19 04:43:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:37,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:37,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:37,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695536222] [2021-11-19 04:43:37,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695536222] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:37,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250589804] [2021-11-19 04:43:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:37,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:37,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:37,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:37,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 04:43:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:37,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-19 04:43:37,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:38,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:38,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 04:43:38,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 04:43:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:39,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250589804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:39,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:39,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 51 [2021-11-19 04:43:39,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828907108] [2021-11-19 04:43:39,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:39,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-19 04:43:39,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:39,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-19 04:43:39,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2114, Unknown=0, NotChecked=0, Total=2652 [2021-11-19 04:43:39,399 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 52 states, 51 states have (on average 2.588235294117647) internal successors, (132), 46 states have internal predecessors, (132), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:43:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:40,588 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-11-19 04:43:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 04:43:40,589 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.588235294117647) internal successors, (132), 46 states have internal predecessors, (132), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 52 [2021-11-19 04:43:40,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:40,590 INFO L225 Difference]: With dead ends: 116 [2021-11-19 04:43:40,590 INFO L226 Difference]: Without dead ends: 116 [2021-11-19 04:43:40,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1041, Invalid=3929, Unknown=0, NotChecked=0, Total=4970 [2021-11-19 04:43:40,593 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 186 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:40,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 474 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 04:43:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-19 04:43:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2021-11-19 04:43:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.25) internal successors, (105), 96 states have internal predecessors, (105), 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) [2021-11-19 04:43:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2021-11-19 04:43:40,599 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 52 [2021-11-19 04:43:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:40,599 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2021-11-19 04:43:40,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.588235294117647) internal successors, (132), 46 states have internal predecessors, (132), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:43:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2021-11-19 04:43:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-19 04:43:40,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:40,602 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:40,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:40,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-19 04:43:40,816 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1316363854, now seen corresponding path program 1 times [2021-11-19 04:43:40,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:40,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408790387] [2021-11-19 04:43:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:40,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:40,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:40,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408790387] [2021-11-19 04:43:40,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408790387] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:40,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979577590] [2021-11-19 04:43:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:40,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:40,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:40,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 04:43:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:41,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 04:43:41,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:41,056 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:43:41,056 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 2 case distinctions, treesize of input 24 treesize of output 27 [2021-11-19 04:43:41,068 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 29 treesize of output 27 [2021-11-19 04:43:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:42,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:42,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979577590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:42,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:42,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2021-11-19 04:43:42,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523170093] [2021-11-19 04:43:42,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:42,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 04:43:42,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 04:43:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:43:42,903 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 13 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:43:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:42,933 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2021-11-19 04:43:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:43:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 53 [2021-11-19 04:43:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:42,935 INFO L225 Difference]: With dead ends: 108 [2021-11-19 04:43:42,935 INFO L226 Difference]: Without dead ends: 108 [2021-11-19 04:43:42,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:43:42,936 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 12 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:42,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 319 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2021-11-19 04:43:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-19 04:43:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-11-19 04:43:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 96 states have internal predecessors, (103), 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) [2021-11-19 04:43:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2021-11-19 04:43:42,941 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 53 [2021-11-19 04:43:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:42,942 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2021-11-19 04:43:42,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:43:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2021-11-19 04:43:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 04:43:42,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:42,944 INFO L514 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] [2021-11-19 04:43:42,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:43,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:43,171 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:43,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash -317183978, now seen corresponding path program 1 times [2021-11-19 04:43:43,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:43,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777979559] [2021-11-19 04:43:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:43,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:43,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:43,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777979559] [2021-11-19 04:43:43,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777979559] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:43,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320245559] [2021-11-19 04:43:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:43,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:43,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:43,296 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:43,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 04:43:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:43,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:43:43,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:43,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:43,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320245559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:43,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:43,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2021-11-19 04:43:43,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546501398] [2021-11-19 04:43:43,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:43,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:43:43,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:43:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:43:43,589 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 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) [2021-11-19 04:43:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:43,669 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2021-11-19 04:43:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:43:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 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 62 [2021-11-19 04:43:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:43,670 INFO L225 Difference]: With dead ends: 120 [2021-11-19 04:43:43,671 INFO L226 Difference]: Without dead ends: 120 [2021-11-19 04:43:43,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:43:43,672 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 33 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:43,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 431 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-19 04:43:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-11-19 04:43:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 105 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) [2021-11-19 04:43:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2021-11-19 04:43:43,677 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 62 [2021-11-19 04:43:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:43,677 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2021-11-19 04:43:43,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 8 states have internal predecessors, (40), 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) [2021-11-19 04:43:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2021-11-19 04:43:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 04:43:43,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:43,679 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:43,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:43,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-19 04:43:43,904 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:43,904 INFO L85 PathProgramCache]: Analyzing trace with hash -134627086, now seen corresponding path program 2 times [2021-11-19 04:43:43,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:43,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984825542] [2021-11-19 04:43:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:43,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:44,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:44,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:44,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984825542] [2021-11-19 04:43:44,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984825542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:44,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222052404] [2021-11-19 04:43:44,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:43:44,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:44,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:44,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:44,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 04:43:44,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:43:44,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:43:44,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 04:43:44,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:44,259 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:43:44,259 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 2 case distinctions, treesize of input 24 treesize of output 27 [2021-11-19 04:43:44,263 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 29 treesize of output 27 [2021-11-19 04:43:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-19 04:43:46,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-19 04:43:47,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222052404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:47,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:47,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2021-11-19 04:43:47,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507984316] [2021-11-19 04:43:47,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:47,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 04:43:47,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:47,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 04:43:47,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-19 04:43:47,368 INFO L87 Difference]: Start difference. First operand 117 states and 124 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:43:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:47,723 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2021-11-19 04:43:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:43:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2021-11-19 04:43:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:47,725 INFO L225 Difference]: With dead ends: 116 [2021-11-19 04:43:47,725 INFO L226 Difference]: Without dead ends: 116 [2021-11-19 04:43:47,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-11-19 04:43:47,726 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 24 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:47,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 549 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2021-11-19 04:43:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-19 04:43:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-19 04:43:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 104 states have internal predecessors, (110), 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) [2021-11-19 04:43:47,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2021-11-19 04:43:47,730 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 63 [2021-11-19 04:43:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:47,731 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2021-11-19 04:43:47,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 17 states have internal predecessors, (60), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:43:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2021-11-19 04:43:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 04:43:47,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:47,736 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:47,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:47,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:47,948 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -226941547, now seen corresponding path program 2 times [2021-11-19 04:43:47,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:47,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791572134] [2021-11-19 04:43:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:47,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:48,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:48,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:43:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 126 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:43:48,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:48,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791572134] [2021-11-19 04:43:48,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791572134] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:48,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082777361] [2021-11-19 04:43:48,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:43:48,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:48,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:48,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:48,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 04:43:48,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:43:48,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:43:48,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 04:43:48,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:48,442 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:43:48,442 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 2 case distinctions, treesize of input 21 treesize of output 24 [2021-11-19 04:43:48,445 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 25 treesize of output 23 [2021-11-19 04:43:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:49,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:43:49,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082777361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:49,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:43:49,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 31 [2021-11-19 04:43:49,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458183354] [2021-11-19 04:43:49,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:49,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 04:43:49,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 04:43:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2021-11-19 04:43:49,699 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-11-19 04:43:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:49,732 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2021-11-19 04:43:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 04:43:49,733 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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 67 [2021-11-19 04:43:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:49,734 INFO L225 Difference]: With dead ends: 115 [2021-11-19 04:43:49,734 INFO L226 Difference]: Without dead ends: 115 [2021-11-19 04:43:49,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2021-11-19 04:43:49,739 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 1 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:49,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 213 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 79 Unchecked, 0.0s Time] [2021-11-19 04:43:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-19 04:43:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-11-19 04:43:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 103 states have internal predecessors, (108), 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) [2021-11-19 04:43:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2021-11-19 04:43:49,743 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 67 [2021-11-19 04:43:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:49,744 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2021-11-19 04:43:49,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-11-19 04:43:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2021-11-19 04:43:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 04:43:49,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:49,745 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:49,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:49,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-19 04:43:49,972 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1322437014, now seen corresponding path program 2 times [2021-11-19 04:43:49,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:49,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385939351] [2021-11-19 04:43:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:49,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:50,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:50,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:50,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385939351] [2021-11-19 04:43:50,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385939351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:50,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584964926] [2021-11-19 04:43:50,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:43:50,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:50,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:50,136 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:50,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 04:43:50,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:43:50,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:43:50,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 04:43:50,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:50,237 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:43:50,238 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 2 case distinctions, treesize of input 26 treesize of output 27 [2021-11-19 04:43:52,146 INFO L354 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2021-11-19 04:43:52,146 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 [2021-11-19 04:43:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-19 04:43:52,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:43:52,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584964926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:52,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:43:52,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2021-11-19 04:43:52,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325106510] [2021-11-19 04:43:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:52,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:43:52,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:43:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-19 04:43:52,216 INFO L87 Difference]: Start difference. First operand 115 states and 119 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) [2021-11-19 04:43:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:52,240 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2021-11-19 04:43:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:43:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 82 [2021-11-19 04:43:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:52,241 INFO L225 Difference]: With dead ends: 118 [2021-11-19 04:43:52,242 INFO L226 Difference]: Without dead ends: 118 [2021-11-19 04:43:52,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:43:52,243 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 2 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:52,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 168 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 66 Unchecked, 0.0s Time] [2021-11-19 04:43:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-19 04:43:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-11-19 04:43:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 105 states have internal predecessors, (112), 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) [2021-11-19 04:43:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2021-11-19 04:43:52,248 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 82 [2021-11-19 04:43:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:52,248 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2021-11-19 04:43:52,249 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) [2021-11-19 04:43:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2021-11-19 04:43:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 04:43:52,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:52,250 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:52,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:52,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-19 04:43:52,472 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1322437015, now seen corresponding path program 1 times [2021-11-19 04:43:52,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:52,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540670285] [2021-11-19 04:43:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:52,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:52,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:52,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540670285] [2021-11-19 04:43:52,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540670285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:52,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845225632] [2021-11-19 04:43:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:52,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:52,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:52,621 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:52,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 04:43:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:52,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:43:52,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:52,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:53,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845225632] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:53,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:53,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 14 [2021-11-19 04:43:53,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319359000] [2021-11-19 04:43:53,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:53,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 04:43:53,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:53,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 04:43:53,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:43:53,066 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 12 states have internal predecessors, (65), 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) [2021-11-19 04:43:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:53,201 INFO L93 Difference]: Finished difference Result 137 states and 143 transitions. [2021-11-19 04:43:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 04:43:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 12 states have internal predecessors, (65), 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 82 [2021-11-19 04:43:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:53,203 INFO L225 Difference]: With dead ends: 137 [2021-11-19 04:43:53,203 INFO L226 Difference]: Without dead ends: 137 [2021-11-19 04:43:53,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-19 04:43:53,204 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 42 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:53,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 167 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-19 04:43:53,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-19 04:43:53,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 125 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) [2021-11-19 04:43:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2021-11-19 04:43:53,208 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 82 [2021-11-19 04:43:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:53,209 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2021-11-19 04:43:53,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 12 states have internal predecessors, (65), 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) [2021-11-19 04:43:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2021-11-19 04:43:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 04:43:53,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:53,210 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:53,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:43:53,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-19 04:43:53,411 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash 242068247, now seen corresponding path program 2 times [2021-11-19 04:43:53,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:53,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926231870] [2021-11-19 04:43:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:53,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:43:53,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:53,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926231870] [2021-11-19 04:43:53,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926231870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:53,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:53,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:43:53,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204577151] [2021-11-19 04:43:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:53,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:43:53,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:53,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:43:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:43:53,651 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 04:43:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:53,866 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2021-11-19 04:43:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:43:53,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 102 [2021-11-19 04:43:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:53,868 INFO L225 Difference]: With dead ends: 142 [2021-11-19 04:43:53,869 INFO L226 Difference]: Without dead ends: 142 [2021-11-19 04:43:53,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:43:53,870 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 68 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:53,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 183 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-19 04:43:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2021-11-19 04:43:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 115 states have (on average 1.1304347826086956) 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) [2021-11-19 04:43:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-11-19 04:43:53,875 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 102 [2021-11-19 04:43:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:53,875 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-11-19 04:43:53,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 04:43:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-11-19 04:43:53,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 04:43:53,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:53,877 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:53,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 04:43:53,878 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1085818935, now seen corresponding path program 1 times [2021-11-19 04:43:53,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:53,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259256456] [2021-11-19 04:43:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:53,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:43:53,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:53,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259256456] [2021-11-19 04:43:53,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259256456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:53,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:53,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:43:53,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911274261] [2021-11-19 04:43:53,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:53,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:43:53,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:43:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:53,983 INFO L87 Difference]: Start difference. First operand 137 states and 141 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) [2021-11-19 04:43:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:54,087 INFO L93 Difference]: Finished difference Result 136 states and 140 transitions. [2021-11-19 04:43:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:43:54,088 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 103 [2021-11-19 04:43:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:54,089 INFO L225 Difference]: With dead ends: 136 [2021-11-19 04:43:54,089 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 04:43:54,090 INFO L932 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 [2021-11-19 04:43:54,090 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 9 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:54,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 134 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 04:43:54,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-19 04:43:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 124 states have internal predecessors, (129), 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) [2021-11-19 04:43:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2021-11-19 04:43:54,097 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 103 [2021-11-19 04:43:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:54,098 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2021-11-19 04:43:54,098 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) [2021-11-19 04:43:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2021-11-19 04:43:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 04:43:54,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:54,100 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:54,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 04:43:54,100 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:54,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1085818934, now seen corresponding path program 1 times [2021-11-19 04:43:54,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:54,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357480880] [2021-11-19 04:43:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:54,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:43:54,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:54,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357480880] [2021-11-19 04:43:54,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357480880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:54,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:43:54,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812236588] [2021-11-19 04:43:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:54,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:43:54,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:43:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:54,222 INFO L87 Difference]: Start difference. First operand 136 states and 140 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) [2021-11-19 04:43:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:54,284 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2021-11-19 04:43:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:43:54,285 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 103 [2021-11-19 04:43:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:54,287 INFO L225 Difference]: With dead ends: 139 [2021-11-19 04:43:54,288 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 04:43:54,288 INFO L932 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 [2021-11-19 04:43:54,289 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:54,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 04:43:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2021-11-19 04:43:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 116 states have (on average 1.1206896551724137) 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) [2021-11-19 04:43:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-11-19 04:43:54,299 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 103 [2021-11-19 04:43:54,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:54,299 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-11-19 04:43:54,300 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) [2021-11-19 04:43:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-11-19 04:43:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 04:43:54,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:54,301 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:54,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 04:43:54,301 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash -508253588, now seen corresponding path program 1 times [2021-11-19 04:43:54,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:54,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670505214] [2021-11-19 04:43:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:54,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:43:54,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:54,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670505214] [2021-11-19 04:43:54,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670505214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:43:54,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:43:54,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 04:43:54,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679260690] [2021-11-19 04:43:54,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:43:54,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:43:54,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:54,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:43:54,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:43:54,400 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-19 04:43:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:54,459 INFO L93 Difference]: Finished difference Result 136 states and 140 transitions. [2021-11-19 04:43:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:43:54,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 107 [2021-11-19 04:43:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:54,460 INFO L225 Difference]: With dead ends: 136 [2021-11-19 04:43:54,461 INFO L226 Difference]: Without dead ends: 136 [2021-11-19 04:43:54,461 INFO L932 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 [2021-11-19 04:43:54,461 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:54,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 136 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:43:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-19 04:43:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-19 04:43:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 116 states have (on average 1.1120689655172413) internal successors, (129), 124 states have internal predecessors, (129), 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) [2021-11-19 04:43:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2021-11-19 04:43:54,467 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 107 [2021-11-19 04:43:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:54,467 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2021-11-19 04:43:54,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-19 04:43:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2021-11-19 04:43:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 04:43:54,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:54,469 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:54,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 04:43:54,470 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:43:54,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:43:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash -508253587, now seen corresponding path program 1 times [2021-11-19 04:43:54,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:43:54,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516120100] [2021-11-19 04:43:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:54,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:43:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:43:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:43:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:43:54,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:43:54,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516120100] [2021-11-19 04:43:54,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516120100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:43:54,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726482549] [2021-11-19 04:43:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:43:54,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:43:54,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:43:54,700 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:43:54,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 04:43:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:43:54,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-19 04:43:54,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:43:55,673 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:43:55,674 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 29 treesize of output 31 [2021-11-19 04:43:55,681 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:43:55,682 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 28 treesize of output 28 [2021-11-19 04:43:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 207 proven. 30 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:55,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:43:56,186 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 51 treesize of output 47 [2021-11-19 04:43:56,195 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 04:43:56,196 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 48 treesize of output 47 [2021-11-19 04:43:56,404 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 36 treesize of output 32 [2021-11-19 04:43:58,893 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-19 04:43:58,894 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 30 treesize of output 29 [2021-11-19 04:43:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 180 proven. 57 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:43:59,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726482549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:43:59,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:43:59,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 42 [2021-11-19 04:43:59,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417452943] [2021-11-19 04:43:59,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:43:59,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-19 04:43:59,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:43:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-19 04:43:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1467, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 04:43:59,030 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand has 43 states, 42 states have (on average 3.857142857142857) internal successors, (162), 38 states have internal predecessors, (162), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 04:43:59,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:43:59,912 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2021-11-19 04:43:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 04:43:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 3.857142857142857) internal successors, (162), 38 states have internal predecessors, (162), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 107 [2021-11-19 04:43:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:43:59,914 INFO L225 Difference]: With dead ends: 146 [2021-11-19 04:43:59,914 INFO L226 Difference]: Without dead ends: 146 [2021-11-19 04:43:59,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=740, Invalid=2800, Unknown=0, NotChecked=0, Total=3540 [2021-11-19 04:43:59,916 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 123 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 270 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:43:59,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 481 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 430 Invalid, 0 Unknown, 270 Unchecked, 0.3s Time] [2021-11-19 04:43:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-19 04:43:59,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2021-11-19 04:43:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 125 states have (on average 1.128) internal successors, (141), 133 states have internal predecessors, (141), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 04:43:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 152 transitions. [2021-11-19 04:43:59,921 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 152 transitions. Word has length 107 [2021-11-19 04:43:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:43:59,921 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 152 transitions. [2021-11-19 04:43:59,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 3.857142857142857) internal successors, (162), 38 states have internal predecessors, (162), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 04:43:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 152 transitions. [2021-11-19 04:43:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 04:43:59,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:43:59,923 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:43:59,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:00,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-19 04:44:00,140 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:44:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1424007988, now seen corresponding path program 1 times [2021-11-19 04:44:00,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:00,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131263432] [2021-11-19 04:44:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:00,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:00,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:44:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:00,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:00,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:00,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131263432] [2021-11-19 04:44:00,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131263432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:00,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219852886] [2021-11-19 04:44:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:00,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:00,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:00,260 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:00,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 04:44:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:00,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:44:00,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:00,501 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 [2021-11-19 04:44:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:00,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:00,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219852886] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:44:00,747 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:44:00,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2021-11-19 04:44:00,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070152230] [2021-11-19 04:44:00,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:44:00,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:44:00,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:00,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:44:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:44:00,751 INFO L87 Difference]: Start difference. First operand 145 states and 152 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 04:44:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:00,863 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2021-11-19 04:44:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:44:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2021-11-19 04:44:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:00,865 INFO L225 Difference]: With dead ends: 154 [2021-11-19 04:44:00,865 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 04:44:00,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:44:00,866 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 18 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:00,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 167 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 04:44:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2021-11-19 04:44:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 139 states have internal predecessors, (147), 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) [2021-11-19 04:44:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2021-11-19 04:44:00,871 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 108 [2021-11-19 04:44:00,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:00,871 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2021-11-19 04:44:00,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 04:44:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2021-11-19 04:44:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 04:44:00,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:00,873 INFO L514 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] [2021-11-19 04:44:00,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:01,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:01,074 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:44:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1387314960, now seen corresponding path program 1 times [2021-11-19 04:44:01,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:01,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378623846] [2021-11-19 04:44:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:01,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:44:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:01,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:01,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:01,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378623846] [2021-11-19 04:44:01,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378623846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:01,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587678182] [2021-11-19 04:44:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:01,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:01,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:01,236 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:01,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-19 04:44:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:01,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:44:01,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:01,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:01,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587678182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:44:01,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:44:01,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2021-11-19 04:44:01,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984961593] [2021-11-19 04:44:01,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:44:01,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 04:44:01,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 04:44:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:44:01,771 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 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) [2021-11-19 04:44:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:01,848 INFO L93 Difference]: Finished difference Result 162 states and 166 transitions. [2021-11-19 04:44:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:44:01,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 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 [2021-11-19 04:44:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:01,850 INFO L225 Difference]: With dead ends: 162 [2021-11-19 04:44:01,850 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 04:44:01,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:44:01,851 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 48 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:01,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 199 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 04:44:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2021-11-19 04:44:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 139 states have (on average 1.1151079136690647) internal successors, (155), 147 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) [2021-11-19 04:44:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2021-11-19 04:44:01,868 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 117 [2021-11-19 04:44:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:01,869 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 166 transitions. [2021-11-19 04:44:01,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 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) [2021-11-19 04:44:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 166 transitions. [2021-11-19 04:44:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 04:44:01,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:01,870 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 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] [2021-11-19 04:44:01,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:02,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:02,096 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:44:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1487004499, now seen corresponding path program 2 times [2021-11-19 04:44:02,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:02,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589929918] [2021-11-19 04:44:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:02,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:44:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:02,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 207 proven. 49 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:44:02,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:02,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589929918] [2021-11-19 04:44:02,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589929918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:02,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900747214] [2021-11-19 04:44:02,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:44:02,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:02,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:02,600 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:02,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-19 04:44:02,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:44:02,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:44:02,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-19 04:44:02,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:02,741 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:44:02,742 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 2 case distinctions, treesize of input 12 treesize of output 16 [2021-11-19 04:44:03,887 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:44:03,887 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 29 treesize of output 31 [2021-11-19 04:44:03,895 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:44:03,895 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 28 treesize of output 28 [2021-11-19 04:44:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 207 proven. 49 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-19 04:44:04,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:04,824 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 45 treesize of output 41 [2021-11-19 04:44:04,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900747214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:04,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:44:04,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 39 [2021-11-19 04:44:04,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845267523] [2021-11-19 04:44:04,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:44:04,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-19 04:44:04,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-19 04:44:04,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1771, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 04:44:04,917 INFO L87 Difference]: Start difference. First operand 159 states and 166 transitions. Second operand has 40 states, 39 states have (on average 4.153846153846154) internal successors, (162), 36 states have internal predecessors, (162), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:44:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:05,939 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2021-11-19 04:44:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 04:44:05,940 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.153846153846154) internal successors, (162), 36 states have internal predecessors, (162), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 117 [2021-11-19 04:44:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:05,941 INFO L225 Difference]: With dead ends: 159 [2021-11-19 04:44:05,941 INFO L226 Difference]: Without dead ends: 159 [2021-11-19 04:44:05,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=649, Invalid=3511, Unknown=0, NotChecked=0, Total=4160 [2021-11-19 04:44:05,944 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 92 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:05,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 791 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 722 Invalid, 0 Unknown, 209 Unchecked, 0.4s Time] [2021-11-19 04:44:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-19 04:44:05,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-11-19 04:44:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 139 states have (on average 1.1079136690647482) internal successors, (154), 147 states have internal predecessors, (154), 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) [2021-11-19 04:44:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2021-11-19 04:44:05,949 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 117 [2021-11-19 04:44:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:05,950 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2021-11-19 04:44:05,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.153846153846154) internal successors, (162), 36 states have internal predecessors, (162), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 04:44:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2021-11-19 04:44:05,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 04:44:05,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:05,952 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:05,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:06,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-19 04:44:06,167 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:44:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash 844744343, now seen corresponding path program 3 times [2021-11-19 04:44:06,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:06,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005217685] [2021-11-19 04:44:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:06,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:44:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-11-19 04:44:06,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:06,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005217685] [2021-11-19 04:44:06,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005217685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:06,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201594790] [2021-11-19 04:44:06,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:44:06,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:06,544 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:06,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 04:44:06,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 04:44:06,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:44:06,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 04:44:06,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:06,656 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-11-19 04:44:06,656 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 2 case distinctions, treesize of input 12 treesize of output 16 [2021-11-19 04:44:07,206 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:44:07,206 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 12 treesize of output 14 [2021-11-19 04:44:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-11-19 04:44:07,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:44:07,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201594790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:07,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:44:07,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2021-11-19 04:44:07,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425545792] [2021-11-19 04:44:07,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:07,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:44:07,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:07,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:44:07,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-11-19 04:44:07,423 INFO L87 Difference]: Start difference. First operand 159 states and 165 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) [2021-11-19 04:44:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:07,612 INFO L93 Difference]: Finished difference Result 158 states and 163 transitions. [2021-11-19 04:44:07,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 04:44:07,612 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 122 [2021-11-19 04:44:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:07,614 INFO L225 Difference]: With dead ends: 158 [2021-11-19 04:44:07,614 INFO L226 Difference]: Without dead ends: 158 [2021-11-19 04:44:07,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-11-19 04:44:07,615 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:07,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 183 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-19 04:44:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-19 04:44:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.0935251798561152) internal successors, (152), 146 states have internal predecessors, (152), 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) [2021-11-19 04:44:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2021-11-19 04:44:07,630 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 122 [2021-11-19 04:44:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:07,631 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2021-11-19 04:44:07,631 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) [2021-11-19 04:44:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2021-11-19 04:44:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-19 04:44:07,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:07,631 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:07,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:07,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-19 04:44:07,832 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:44:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash 417270858, now seen corresponding path program 2 times [2021-11-19 04:44:07,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:07,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743093081] [2021-11-19 04:44:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:07,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:07,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-19 04:44:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-19 04:44:08,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:08,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743093081] [2021-11-19 04:44:08,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743093081] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:08,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126804279] [2021-11-19 04:44:08,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:44:08,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:08,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:08,028 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:08,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-19 04:44:08,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:44:08,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:44:08,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 04:44:08,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:08,352 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 [2021-11-19 04:44:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-19 04:44:08,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-19 04:44:09,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126804279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:44:09,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:44:09,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2021-11-19 04:44:09,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690039035] [2021-11-19 04:44:09,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:44:09,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 04:44:09,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 04:44:09,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-19 04:44:09,243 INFO L87 Difference]: Start difference. First operand 158 states and 163 transitions. Second operand has 21 states, 20 states have (on average 3.35) internal successors, (67), 16 states have internal predecessors, (67), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 04:44:09,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:09,489 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2021-11-19 04:44:09,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:44:09,490 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 16 states have internal predecessors, (67), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 123 [2021-11-19 04:44:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:09,491 INFO L225 Difference]: With dead ends: 157 [2021-11-19 04:44:09,491 INFO L226 Difference]: Without dead ends: 157 [2021-11-19 04:44:09,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-11-19 04:44:09,492 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 156 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:09,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 391 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-19 04:44:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-19 04:44:09,496 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) [2021-11-19 04:44:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2021-11-19 04:44:09,497 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 123 [2021-11-19 04:44:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:09,497 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2021-11-19 04:44:09,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.35) internal successors, (67), 16 states have internal predecessors, (67), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-19 04:44:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2021-11-19 04:44:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-19 04:44:09,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:09,498 INFO L514 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] [2021-11-19 04:44:09,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:09,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-19 04:44:09,699 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:44:09,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:09,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2070269040, now seen corresponding path program 2 times [2021-11-19 04:44:09,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:09,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804289152] [2021-11-19 04:44:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:09,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:44:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:09,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-19 04:44:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:09,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:09,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804289152] [2021-11-19 04:44:09,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804289152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:09,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407182902] [2021-11-19 04:44:09,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:44:09,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:09,908 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:09,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-19 04:44:10,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:44:10,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:44:10,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 04:44:10,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:10,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-19 04:44:10,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407182902] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:44:10,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:44:10,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 16 [2021-11-19 04:44:10,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765022680] [2021-11-19 04:44:10,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:44:10,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 04:44:10,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 04:44:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:44:10,573 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 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) [2021-11-19 04:44:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:10,649 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2021-11-19 04:44:10,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 04:44:10,649 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 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 [2021-11-19 04:44:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:10,650 INFO L225 Difference]: With dead ends: 177 [2021-11-19 04:44:10,650 INFO L226 Difference]: Without dead ends: 177 [2021-11-19 04:44:10,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:44:10,651 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 44 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:10,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 354 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-19 04:44:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-19 04:44:10,658 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) [2021-11-19 04:44:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-11-19 04:44:10,659 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 137 [2021-11-19 04:44:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:10,659 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-11-19 04:44:10,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 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) [2021-11-19 04:44:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-11-19 04:44:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 04:44:10,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:10,661 INFO L514 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] [2021-11-19 04:44:10,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:10,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-19 04:44:10,880 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-19 04:44:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1136420880, now seen corresponding path program 3 times [2021-11-19 04:44:10,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:10,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86269079] [2021-11-19 04:44:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:10,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:44:10,965 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:44:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:44:11,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:44:11,122 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:44:11,123 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location getNumbers4Err0REQUIRES_VIOLATION (16 of 17 remaining) [2021-11-19 04:44:11,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err1REQUIRES_VIOLATION (15 of 17 remaining) [2021-11-19 04:44:11,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err2REQUIRES_VIOLATION (14 of 17 remaining) [2021-11-19 04:44:11,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers4Err3REQUIRES_VIOLATION (13 of 17 remaining) [2021-11-19 04:44:11,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (12 of 17 remaining) [2021-11-19 04:44:11,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (11 of 17 remaining) [2021-11-19 04:44:11,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK (10 of 17 remaining) [2021-11-19 04:44:11,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err0REQUIRES_VIOLATION (9 of 17 remaining) [2021-11-19 04:44:11,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err1REQUIRES_VIOLATION (8 of 17 remaining) [2021-11-19 04:44:11,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err2REQUIRES_VIOLATION (7 of 17 remaining) [2021-11-19 04:44:11,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers3Err3REQUIRES_VIOLATION (6 of 17 remaining) [2021-11-19 04:44:11,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err0REQUIRES_VIOLATION (5 of 17 remaining) [2021-11-19 04:44:11,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err1REQUIRES_VIOLATION (4 of 17 remaining) [2021-11-19 04:44:11,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err2REQUIRES_VIOLATION (3 of 17 remaining) [2021-11-19 04:44:11,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err3REQUIRES_VIOLATION (2 of 17 remaining) [2021-11-19 04:44:11,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr0REQUIRES_VIOLATION (1 of 17 remaining) [2021-11-19 04:44:11,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr1REQUIRES_VIOLATION (0 of 17 remaining) [2021-11-19 04:44:11,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 04:44:11,131 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:11,136 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:44:11,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:44:11 BoogieIcfgContainer [2021-11-19 04:44:11,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:44:11,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:44:11,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:44:11,277 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:44:11,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:43:29" (3/4) ... [2021-11-19 04:44:11,279 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 04:44:11,365 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:44:11,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:44:11,366 INFO L158 Benchmark]: Toolchain (without parser) took 42679.11ms. Allocated memory was 96.5MB in the beginning and 325.1MB in the end (delta: 228.6MB). Free memory was 61.5MB in the beginning and 147.8MB in the end (delta: -86.2MB). Peak memory consumption was 141.9MB. Max. memory is 16.1GB. [2021-11-19 04:44:11,366 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 69.5MB in the beginning and 69.5MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:44:11,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.73ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 61.3MB in the beginning and 103.5MB in the end (delta: -42.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:44:11,367 INFO L158 Benchmark]: Boogie Preprocessor took 58.72ms. Allocated memory is still 127.9MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:44:11,367 INFO L158 Benchmark]: RCFGBuilder took 454.82ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 87.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 04:44:11,369 INFO L158 Benchmark]: TraceAbstraction took 41767.38ms. Allocated memory was 127.9MB in the beginning and 325.1MB in the end (delta: 197.1MB). Free memory was 86.7MB in the beginning and 156.2MB in the end (delta: -69.5MB). Peak memory consumption was 130.2MB. Max. memory is 16.1GB. [2021-11-19 04:44:11,373 INFO L158 Benchmark]: Witness Printer took 88.46ms. Allocated memory is still 325.1MB. Free memory was 155.2MB in the beginning and 147.8MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:44:11,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 69.5MB in the beginning and 69.5MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.73ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 61.3MB in the beginning and 103.5MB in the end (delta: -42.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.72ms. Allocated memory is still 127.9MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.82ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 87.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 41767.38ms. Allocated memory was 127.9MB in the beginning and 325.1MB in the end (delta: 197.1MB). Free memory was 86.7MB in the beginning and 156.2MB in the end (delta: -69.5MB). Peak memory consumption was 130.2MB. Max. memory is 16.1GB. * Witness Printer took 88.46ms. Allocated memory is still 325.1MB. Free memory was 155.2MB in the beginning and 147.8MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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={14:0}, numbers4={15:0}] [L45] CALL getNumbers4() VAL [array={13:0}, numbers2={14:0}, numbers4={15:0}] [L35] CALL, EXPR getNumbers3() VAL [array={13:0}, numbers2={14:0}, numbers4={15:0}] [L25] CALL, EXPR getNumbers2() VAL [array={13:0}, numbers2={14:0}, numbers4={15:0}] [L16] CALL, EXPR getNumbers() VAL [array={13:0}, numbers2={14:0}, numbers4={15:0}] [L8] int i = 0; VAL [array={13:0}, i=0, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=0, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=1, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=1, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=1, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=2, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=2, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=2, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=3, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=3, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=3, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=4, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=4, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=4, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=5, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=5, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=5, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=6, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=6, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=6, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=7, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=7, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=7, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=8, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=8, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=8, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=9, numbers2={14:0}, numbers4={15:0}] [L8] COND TRUE i < 10 VAL [array={13:0}, i=9, numbers2={14:0}, numbers4={15:0}] [L9] array[i] = i VAL [array={13:0}, i=9, numbers2={14:0}, numbers4={15:0}] [L8] ++i VAL [array={13:0}, i=10, numbers2={14:0}, numbers4={15:0}] [L8] COND FALSE !(i < 10) VAL [array={13:0}, i=10, numbers2={14:0}, numbers4={15:0}] [L12] return array; VAL [\result={13:0}, array={13:0}, i=10, numbers2={14:0}, numbers4={15:0}] [L16] RET, EXPR getNumbers() VAL [array={13:0}, getNumbers()={13:0}, numbers2={14:0}, numbers4={15:0}] [L16] int* numbers = getNumbers(); [L18] int i = 0; VAL [array={13:0}, i=0, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=0, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=0] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=0, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=0] [L18] ++i VAL [array={13:0}, i=1, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=1, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=1, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=1] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=1, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=1] [L18] ++i VAL [array={13:0}, i=2, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=2, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=2, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=2] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=2, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=2] [L18] ++i VAL [array={13:0}, i=3, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=3, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=3, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=3] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=3, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=3] [L18] ++i VAL [array={13:0}, i=4, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=4, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=4, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=4] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=4, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=4] [L18] ++i VAL [array={13:0}, i=5, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=5, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=5, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=5] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=5, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=5] [L18] ++i VAL [array={13:0}, i=6, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=6, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=6, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=6] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=6, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=6] [L18] ++i VAL [array={13:0}, i=7, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=7, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=7, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=7] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=7, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=7] [L18] ++i VAL [array={13:0}, i=8, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=8, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=8, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=8] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=8, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=8] [L18] ++i VAL [array={13:0}, i=9, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND TRUE i < 10 VAL [array={13:0}, i=9, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L19] EXPR numbers[i] VAL [array={13:0}, i=9, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=9] [L19] numbers2[i] = numbers[i] VAL [array={13:0}, i=9, numbers={13:0}, numbers2={14:0}, numbers4={15:0}, numbers[i]=9] [L18] ++i VAL [array={13:0}, i=10, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L18] COND FALSE !(i < 10) VAL [array={13:0}, i=10, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L21] return numbers2; VAL [\result={14:0}, array={13:0}, i=10, numbers={13:0}, numbers2={14:0}, numbers4={15:0}] [L25] RET, EXPR getNumbers2() VAL [array={13:0}, getNumbers2()={14:0}, numbers2={14:0}, numbers4={15:0}] [L25] int* numbers = getNumbers2(); [L26] int numbers3[10]; [L27] int i = 0; VAL [array={13:0}, i=0, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=0, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=0] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=0, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=0] [L27] ++i VAL [array={13:0}, i=1, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=1, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=1, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=1] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=1, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=1] [L27] ++i VAL [array={13:0}, i=2, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=2, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=2, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=2] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=2, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=2] [L27] ++i VAL [array={13:0}, i=3, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=3, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=3, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=3] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=3, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=3] [L27] ++i VAL [array={13:0}, i=4, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=4, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=4, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=4] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=4, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=4] [L27] ++i VAL [array={13:0}, i=5, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=5, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=5, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=5] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=5, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=5] [L27] ++i VAL [array={13:0}, i=6, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=6, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=6, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=6] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=6, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=6] [L27] ++i VAL [array={13:0}, i=7, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=7, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=7, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=7] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=7, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=7] [L27] ++i VAL [array={13:0}, i=8, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=8, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=8, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=8] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=8, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=8] [L27] ++i VAL [array={13:0}, i=9, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND TRUE i < 10 VAL [array={13:0}, i=9, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L28] EXPR numbers[i] VAL [array={13:0}, i=9, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=9] [L28] numbers3[i] = numbers[i] VAL [array={13:0}, i=9, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}, numbers[i]=9] [L27] ++i VAL [array={13:0}, i=10, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L27] COND FALSE !(i < 10) VAL [array={13:0}, i=10, numbers={14:0}, numbers2={14:0}, numbers3={11:0}, numbers4={15:0}] [L31] return numbers3; [L31] return numbers3; VAL [\result={11:0}, array={13:0}, i=10, numbers={14:0}, numbers2={14:0}, numbers4={15:0}] [L35] RET, EXPR getNumbers3() VAL [array={13:0}, getNumbers3()={11:0}, numbers2={14:0}, numbers4={15:0}] [L35] int* numbers = getNumbers3(); [L37] int i = 0; VAL [array={13:0}, i=0, numbers={11:0}, numbers2={14:0}, numbers4={15:0}] [L37] COND TRUE i < 10 VAL [array={13:0}, i=0, numbers={11:0}, numbers2={14:0}, numbers4={15:0}] [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: 41.6s, OverallIterations: 29, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1371 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1364 mSDsluCounter, 7151 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 923 IncrementalHoareTripleChecker+Unchecked, 5625 mSDsCounter, 380 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4256 IncrementalHoareTripleChecker+Invalid, 5559 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 380 mSolverCounterUnsat, 1526 mSDtfsCounter, 4256 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2874 GetRequests, 2364 SyntacticMatches, 16 SemanticMatches, 494 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3614 ImplicationChecksByTransitivity, 8.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=28, InterpolantAutomatonStates: 274, 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, 28 MinimizatonAttempts, 58 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 27.8s InterpolantComputationTime, 3569 NumberOfCodeBlocks, 3247 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 4320 ConstructedInterpolants, 365 QuantifiedInterpolants, 27622 SizeOfPredicates, 87 NumberOfNonLiveVariables, 4801 ConjunctsInSsa, 318 ConjunctsInUnsatCore, 60 InterpolantComputations, 14 PerfectInterpolantSequences, 12186/13316 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! [2021-11-19 04:44:11,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71090b08-bc17-427b-9d30-4650d925291d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)