./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY --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 6bc6b4117baccd9c0c047fce306a2f95fb55fa90595dfb64eaa429319b56a306 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:53:45,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:53:45,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:53:45,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:53:45,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:53:45,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:53:45,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:53:45,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:53:45,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:53:45,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:53:46,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:53:46,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:53:46,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:53:46,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:53:46,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:53:46,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:53:46,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:53:46,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:53:46,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:53:46,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:53:46,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:53:46,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:53:46,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:53:46,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:53:46,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:53:46,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:53:46,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:53:46,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:53:46,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:53:46,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:53:46,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:53:46,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:53:46,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:53:46,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:53:46,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:53:46,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:53:46,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:53:46,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:53:46,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:53:46,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:53:46,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:53:46,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:53:46,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:53:46,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:53:46,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:53:46,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:53:46,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:53:46,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:53:46,136 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:53:46,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:53:46,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:53:46,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:53:46,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:53:46,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:53:46,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:53:46,139 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:53:46,139 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:53:46,139 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:53:46,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:53:46,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:53:46,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:53:46,141 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:53:46,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:53:46,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:53:46,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:53:46,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:53:46,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:53:46,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:53:46,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:53:46,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:53:46,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:53:46,146 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_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bc6b4117baccd9c0c047fce306a2f95fb55fa90595dfb64eaa429319b56a306 [2021-11-07 07:53:46,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:53:46,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:53:46,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:53:46,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:53:46,484 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:53:46,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c [2021-11-07 07:53:46,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/data/92f4e2aa0/b248df640fda40a297a985326b5a6254/FLAG113d1f853 [2021-11-07 07:53:47,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:53:47,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c [2021-11-07 07:53:47,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/data/92f4e2aa0/b248df640fda40a297a985326b5a6254/FLAG113d1f853 [2021-11-07 07:53:47,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/data/92f4e2aa0/b248df640fda40a297a985326b5a6254 [2021-11-07 07:53:47,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:53:47,485 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:53:47,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:53:47,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:53:47,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:53:47,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76d1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47, skipping insertion in model container [2021-11-07 07:53:47,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:53:47,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:53:47,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:53:47,751 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:53:47,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:53:47,793 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:53:47,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47 WrapperNode [2021-11-07 07:53:47,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:53:47,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:53:47,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:53:47,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:53:47,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:53:47,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:53:47,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:53:47,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:53:47,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (1/1) ... [2021-11-07 07:53:47,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:53:47,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:47,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:53:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:53:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:53:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:53:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-11-07 07:53:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2021-11-07 07:53:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2021-11-07 07:53:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2021-11-07 07:53:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:53:47,975 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-11-07 07:53:47,975 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-11-07 07:53:47,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:53:47,975 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2021-11-07 07:53:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:53:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2021-11-07 07:53:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2021-11-07 07:53:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:53:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:53:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:53:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:53:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:53:47,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:53:48,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:53:48,354 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 07:53:48,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:53:48 BoogieIcfgContainer [2021-11-07 07:53:48,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:53:48,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:53:48,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:53:48,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:53:48,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:53:47" (1/3) ... [2021-11-07 07:53:48,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ddafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:53:48, skipping insertion in model container [2021-11-07 07:53:48,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:47" (2/3) ... [2021-11-07 07:53:48,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537ddafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:53:48, skipping insertion in model container [2021-11-07 07:53:48,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:53:48" (3/3) ... [2021-11-07 07:53:48,367 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers4-1.c [2021-11-07 07:53:48,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:53:48,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-07 07:53:48,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:53:48,436 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 [2021-11-07 07:53:48,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-07 07:53:48,457 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) [2021-11-07 07:53:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:53:48,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:48,467 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:48,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:48,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:48,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468390, now seen corresponding path program 1 times [2021-11-07 07:53:48,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:48,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075757658] [2021-11-07 07:53:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:48,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:49,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:49,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075757658] [2021-11-07 07:53:49,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075757658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:49,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:49,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:53:49,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427366251] [2021-11-07 07:53:49,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:49,066 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) [2021-11-07 07:53:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:49,592 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2021-11-07 07:53:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:53:49,594 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 [2021-11-07 07:53:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:49,608 INFO L225 Difference]: With dead ends: 117 [2021-11-07 07:53:49,609 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 07:53:49,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 07:53:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 63. [2021-11-07 07:53:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 51 states have internal predecessors, (56), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:53:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-11-07 07:53:49,660 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 12 [2021-11-07 07:53:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:49,660 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-11-07 07:53:49,660 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) [2021-11-07 07:53:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-11-07 07:53:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:53:49,661 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:49,662 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:49,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:53:49,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1833468391, now seen corresponding path program 1 times [2021-11-07 07:53:49,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:49,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15679706] [2021-11-07 07:53:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:49,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:49,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:49,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15679706] [2021-11-07 07:53:49,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15679706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:49,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:49,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:49,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099147093] [2021-11-07 07:53:49,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:53:49,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:53:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:49,888 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:53:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:50,173 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-11-07 07:53:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:53:50,174 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 [2021-11-07 07:53:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:50,176 INFO L225 Difference]: With dead ends: 66 [2021-11-07 07:53:50,176 INFO L226 Difference]: Without dead ends: 66 [2021-11-07 07:53:50,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:53:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-07 07:53:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-11-07 07:53:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 53 states have internal predecessors, (58), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:53:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-11-07 07:53:50,186 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 12 [2021-11-07 07:53:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:50,186 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-11-07 07:53:50,187 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) [2021-11-07 07:53:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-11-07 07:53:50,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:53:50,188 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:50,188 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:50,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:53:50,188 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1757784526, now seen corresponding path program 1 times [2021-11-07 07:53:50,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:50,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317361147] [2021-11-07 07:53:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:50,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:50,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:50,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317361147] [2021-11-07 07:53:50,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317361147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:50,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868996936] [2021-11-07 07:53:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:50,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:50,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:50,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:53:50,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:53:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:50,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:53:50,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:50,656 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-11-07 07:53:50,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 67 [2021-11-07 07:53:50,678 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:53:50,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 120 [2021-11-07 07:53:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:52,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868996936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:52,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:53:52,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-11-07 07:53:52,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738808693] [2021-11-07 07:53:52,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:53:52,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:53:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:53:52,188 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:53:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:52,621 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-11-07 07:53:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:53:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-07 07:53:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:52,624 INFO L225 Difference]: With dead ends: 69 [2021-11-07 07:53:52,624 INFO L226 Difference]: Without dead ends: 69 [2021-11-07 07:53:52,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:53:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-07 07:53:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-11-07 07:53:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.4523809523809523) 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) [2021-11-07 07:53:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-11-07 07:53:52,633 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2021-11-07 07:53:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:52,634 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-11-07 07:53:52,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:53:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-11-07 07:53:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 07:53:52,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:52,636 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:52,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:52,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:52,859 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:52,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1917592711, now seen corresponding path program 2 times [2021-11-07 07:53:52,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:52,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111391632] [2021-11-07 07:53:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:52,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:53,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:53,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111391632] [2021-11-07 07:53:53,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111391632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:53,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454684749] [2021-11-07 07:53:53,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:53:53,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:53,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:53,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:53:53,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:53:53,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:53:53,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:53:53,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:53:53,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:53,336 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-11-07 07:53:53,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 67 [2021-11-07 07:53:53,364 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:53:53,364 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 111 treesize of output 107 [2021-11-07 07:53:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:54,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454684749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:54,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:53:54,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-11-07 07:53:54,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827818551] [2021-11-07 07:53:54,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:53:54,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:53:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:53:54,991 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:53:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:55,408 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-11-07 07:53:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:53:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-07 07:53:55,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:55,411 INFO L225 Difference]: With dead ends: 72 [2021-11-07 07:53:55,411 INFO L226 Difference]: Without dead ends: 72 [2021-11-07 07:53:55,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:53:55,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-07 07:53:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-11-07 07:53:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 59 states have internal predecessors, (64), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:53:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-11-07 07:53:55,419 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 18 [2021-11-07 07:53:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:55,420 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-11-07 07:53:55,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:53:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-11-07 07:53:55,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 07:53:55,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:55,421 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:55,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:55,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:55,644 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:55,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:55,644 INFO L85 PathProgramCache]: Analyzing trace with hash -355499218, now seen corresponding path program 3 times [2021-11-07 07:53:55,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:55,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180102438] [2021-11-07 07:53:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:55,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:55,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:55,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180102438] [2021-11-07 07:53:55,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180102438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:55,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915740099] [2021-11-07 07:53:55,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:53:55,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:55,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:55,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:53:55,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:53:56,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:53:56,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:53:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:53:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:56,132 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-11-07 07:53:56,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 67 [2021-11-07 07:53:56,141 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:53:56,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 120 [2021-11-07 07:53:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 07:53:57,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915740099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:57,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:53:57,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-11-07 07:53:57,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249264497] [2021-11-07 07:53:57,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:53:57,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:53:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:53:57,861 INFO L87 Difference]: Start difference. First operand 71 states and 75 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) [2021-11-07 07:53:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:57,957 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-11-07 07:53:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:53:57,957 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 [2021-11-07 07:53:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:57,958 INFO L225 Difference]: With dead ends: 70 [2021-11-07 07:53:57,958 INFO L226 Difference]: Without dead ends: 70 [2021-11-07 07:53:57,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:53:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-07 07:53:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2021-11-07 07:53:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 57 states have internal predecessors, (62), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:53:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-11-07 07:53:57,964 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 21 [2021-11-07 07:53:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:57,965 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-11-07 07:53:57,965 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) [2021-11-07 07:53:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-11-07 07:53:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 07:53:57,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:57,966 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:57,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:58,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:58,171 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash -16477363, now seen corresponding path program 1 times [2021-11-07 07:53:58,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:58,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907000665] [2021-11-07 07:53:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:58,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:53:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 07:53:58,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:58,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907000665] [2021-11-07 07:53:58,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907000665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:58,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:58,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 07:53:58,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365242140] [2021-11-07 07:53:58,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:53:58,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:53:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:53:58,313 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:53:58,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:58,584 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-11-07 07:53:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:53:58,587 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 26 [2021-11-07 07:53:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:58,590 INFO L225 Difference]: With dead ends: 68 [2021-11-07 07:53:58,591 INFO L226 Difference]: Without dead ends: 68 [2021-11-07 07:53:58,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:53:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-07 07:53:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-07 07:53:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 44 states have (on average 1.3863636363636365) 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) [2021-11-07 07:53:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-11-07 07:53:58,614 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 26 [2021-11-07 07:53:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:58,615 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-11-07 07:53:58,615 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) [2021-11-07 07:53:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-11-07 07:53:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 07:53:58,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:58,617 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:58,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:53:58,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:58,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:58,618 INFO L85 PathProgramCache]: Analyzing trace with hash -16477362, now seen corresponding path program 1 times [2021-11-07 07:53:58,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:58,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487281083] [2021-11-07 07:53:58,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:58,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:58,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:53:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:58,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:58,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487281083] [2021-11-07 07:53:58,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487281083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:58,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716187843] [2021-11-07 07:53:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:58,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:58,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:58,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:53:58,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:53:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:59,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:53:59,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:59,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716187843] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:59,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:53:59,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 11 [2021-11-07 07:53:59,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721260073] [2021-11-07 07:53:59,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:53:59,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:53:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:53:59,162 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-11-07 07:53:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:59,467 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-11-07 07:53:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:53:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 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 26 [2021-11-07 07:53:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:59,469 INFO L225 Difference]: With dead ends: 73 [2021-11-07 07:53:59,469 INFO L226 Difference]: Without dead ends: 73 [2021-11-07 07:53:59,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:53:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-07 07:53:59,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-11-07 07:53:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 59 states have internal predecessors, (64), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:53:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-11-07 07:53:59,474 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 26 [2021-11-07 07:53:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:59,475 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-11-07 07:53:59,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-11-07 07:53:59,475 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-11-07 07:53:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 07:53:59,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:59,476 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:59,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:59,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:59,686 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:53:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash 502160117, now seen corresponding path program 2 times [2021-11-07 07:53:59,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:59,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940324708] [2021-11-07 07:53:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:59,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:53:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:53:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:59,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:59,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940324708] [2021-11-07 07:53:59,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940324708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:59,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141637924] [2021-11-07 07:53:59,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:53:59,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:59,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:59,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:53:59,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:54:00,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:54:00,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:00,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:54:00,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:00,205 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 07:54:00,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 07:54:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 07:54:00,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141637924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:54:00,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:54:00,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2021-11-07 07:54:00,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916996705] [2021-11-07 07:54:00,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:54:00,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:54:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:54:00,516 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 07:54:00,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:00,627 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-11-07 07:54:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:54:00,628 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 29 [2021-11-07 07:54:00,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:00,629 INFO L225 Difference]: With dead ends: 78 [2021-11-07 07:54:00,629 INFO L226 Difference]: Without dead ends: 78 [2021-11-07 07:54:00,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:54:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-07 07:54:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-11-07 07:54:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 49 states have (on average 1.346938775510204) internal successors, (66), 61 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-11-07 07:54:00,635 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 29 [2021-11-07 07:54:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:00,635 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-11-07 07:54:00,635 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) [2021-11-07 07:54:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-11-07 07:54:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 07:54:00,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:00,636 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:00,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:00,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:00,851 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:00,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1612905533, now seen corresponding path program 1 times [2021-11-07 07:54:00,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:00,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606459470] [2021-11-07 07:54:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:00,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:00,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:00,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606459470] [2021-11-07 07:54:00,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606459470] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:00,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85072137] [2021-11-07 07:54:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:00,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:00,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:00,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:01,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:54:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:01,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:54:01,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:01,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85072137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:01,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:01,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-11-07 07:54:01,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635313020] [2021-11-07 07:54:01,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:54:01,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:01,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:54:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:54:01,355 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:54:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:01,463 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-11-07 07:54:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:54:01,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-11-07 07:54:01,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:01,464 INFO L225 Difference]: With dead ends: 78 [2021-11-07 07:54:01,464 INFO L226 Difference]: Without dead ends: 78 [2021-11-07 07:54:01,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:54:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-07 07:54:01,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-07 07:54:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.3269230769230769) 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) [2021-11-07 07:54:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-11-07 07:54:01,470 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 30 [2021-11-07 07:54:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:01,470 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-11-07 07:54:01,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:54:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-11-07 07:54:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 07:54:01,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:01,471 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:01,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:01,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:01,695 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:01,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash 532455402, now seen corresponding path program 2 times [2021-11-07 07:54:01,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:01,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132970351] [2021-11-07 07:54:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:01,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:01,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:01,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132970351] [2021-11-07 07:54:01,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132970351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676199664] [2021-11-07 07:54:01,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:54:01,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:01,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:01,840 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:01,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:54:02,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:54:02,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:02,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:54:02,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:02,199 INFO L354 Elim1Store]: treesize reduction 252, result has 14.3 percent of original size [2021-11-07 07:54:02,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 173 treesize of output 188 [2021-11-07 07:54:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 07:54:27,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676199664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:54:27,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:54:27,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2021-11-07 07:54:27,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668584454] [2021-11-07 07:54:27,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:54:27,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:54:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:54:27,851 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 07:54:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:27,874 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2021-11-07 07:54:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:54:27,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-11-07 07:54:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:27,875 INFO L225 Difference]: With dead ends: 75 [2021-11-07 07:54:27,875 INFO L226 Difference]: Without dead ends: 75 [2021-11-07 07:54:27,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:54:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-07 07:54:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-07 07:54:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.3076923076923077) 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) [2021-11-07 07:54:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-07 07:54:27,880 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 33 [2021-11-07 07:54:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:27,880 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-07 07:54:27,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 07:54:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-07 07:54:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 07:54:27,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:27,881 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:27,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:28,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 07:54:28,095 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 532455403, now seen corresponding path program 1 times [2021-11-07 07:54:28,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:28,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178083108] [2021-11-07 07:54:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:28,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:28,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:28,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178083108] [2021-11-07 07:54:28,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178083108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:28,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349699482] [2021-11-07 07:54:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:28,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:28,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:28,234 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:28,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:54:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:28,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:54:28,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:28,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349699482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:28,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:28,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-11-07 07:54:28,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805100118] [2021-11-07 07:54:28,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:54:28,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:54:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:54:28,734 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-11-07 07:54:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:28,882 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-11-07 07:54:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:54:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 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 33 [2021-11-07 07:54:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:28,883 INFO L225 Difference]: With dead ends: 80 [2021-11-07 07:54:28,883 INFO L226 Difference]: Without dead ends: 80 [2021-11-07 07:54:28,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:54:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-07 07:54:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-11-07 07:54:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.290909090909091) internal successors, (71), 66 states have internal predecessors, (71), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-11-07 07:54:28,887 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 33 [2021-11-07 07:54:28,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:28,888 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-11-07 07:54:28,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 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) [2021-11-07 07:54:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-11-07 07:54:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 07:54:28,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:28,889 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:28,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:29,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 07:54:29,099 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash -428261788, now seen corresponding path program 2 times [2021-11-07 07:54:29,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:29,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630671925] [2021-11-07 07:54:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:29,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:29,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:29,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:29,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630671925] [2021-11-07 07:54:29,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630671925] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:29,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983229429] [2021-11-07 07:54:29,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:54:29,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:29,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:29,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:29,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:54:29,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:54:29,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:29,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:54:29,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:29,679 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-11-07 07:54:29,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 70 [2021-11-07 07:54:29,722 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:54:29,723 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 313 treesize of output 301 [2021-11-07 07:54:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-07 07:54:31,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983229429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:54:31,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:54:31,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-11-07 07:54:31,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184169290] [2021-11-07 07:54:31,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:54:31,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:54:31,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:54:31,822 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 07:54:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:31,884 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-11-07 07:54:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:54:31,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-11-07 07:54:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:31,886 INFO L225 Difference]: With dead ends: 81 [2021-11-07 07:54:31,886 INFO L226 Difference]: Without dead ends: 81 [2021-11-07 07:54:31,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:54:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-07 07:54:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-11-07 07:54:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 67 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-11-07 07:54:31,889 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 36 [2021-11-07 07:54:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:31,889 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-11-07 07:54:31,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 07:54:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-11-07 07:54:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 07:54:31,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:31,891 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:31,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:32,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 07:54:32,094 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1899534855, now seen corresponding path program 1 times [2021-11-07 07:54:32,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:32,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709331570] [2021-11-07 07:54:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:32,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:54:32,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:32,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709331570] [2021-11-07 07:54:32,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709331570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:32,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586516890] [2021-11-07 07:54:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:32,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:32,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:32,237 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:32,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:54:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:32,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:54:32,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:54:32,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586516890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:32,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:32,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-11-07 07:54:32,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319795780] [2021-11-07 07:54:32,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:54:32,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:54:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:54:32,988 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:54:33,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:33,112 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-11-07 07:54:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:54:33,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2021-11-07 07:54:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:33,113 INFO L225 Difference]: With dead ends: 84 [2021-11-07 07:54:33,113 INFO L226 Difference]: Without dead ends: 84 [2021-11-07 07:54:33,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:54:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-07 07:54:33,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-11-07 07:54:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.271186440677966) internal successors, (75), 70 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-11-07 07:54:33,116 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 40 [2021-11-07 07:54:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:33,117 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-11-07 07:54:33,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-07 07:54:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-11-07 07:54:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 07:54:33,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:33,118 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:33,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:33,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 07:54:33,329 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:33,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:33,330 INFO L85 PathProgramCache]: Analyzing trace with hash -233016978, now seen corresponding path program 2 times [2021-11-07 07:54:33,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:33,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669077503] [2021-11-07 07:54:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:33,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:33,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:54:33,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:33,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669077503] [2021-11-07 07:54:33,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669077503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:33,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009136996] [2021-11-07 07:54:33,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:54:33,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:33,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:33,502 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:33,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:54:34,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:54:34,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:34,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:54:34,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:54:34,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009136996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:34,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:34,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-11-07 07:54:34,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587606367] [2021-11-07 07:54:34,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:54:34,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:54:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:54:34,101 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-11-07 07:54:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:34,205 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2021-11-07 07:54:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:54:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 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 43 [2021-11-07 07:54:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:34,207 INFO L225 Difference]: With dead ends: 87 [2021-11-07 07:54:34,207 INFO L226 Difference]: Without dead ends: 87 [2021-11-07 07:54:34,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:54:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-07 07:54:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-07 07:54:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 73 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-11-07 07:54:34,211 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 43 [2021-11-07 07:54:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:34,211 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-11-07 07:54:34,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-11-07 07:54:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-11-07 07:54:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 07:54:34,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:34,213 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:34,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:34,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 07:54:34,426 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash 71568551, now seen corresponding path program 3 times [2021-11-07 07:54:34,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:34,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891946841] [2021-11-07 07:54:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:34,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:54:34,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:34,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891946841] [2021-11-07 07:54:34,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891946841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:34,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116708756] [2021-11-07 07:54:34,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:54:34,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:34,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:34,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:54:35,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:54:35,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:35,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:54:35,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-07 07:54:35,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116708756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:35,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:35,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2021-11-07 07:54:35,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961326799] [2021-11-07 07:54:35,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:54:35,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:54:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:54:35,429 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:54:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:36,173 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2021-11-07 07:54:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:54:36,173 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-11-07 07:54:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:36,176 INFO L225 Difference]: With dead ends: 102 [2021-11-07 07:54:36,176 INFO L226 Difference]: Without dead ends: 102 [2021-11-07 07:54:36,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 07:54:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-07 07:54:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2021-11-07 07:54:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.2318840579710144) 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) [2021-11-07 07:54:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-11-07 07:54:36,181 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 46 [2021-11-07 07:54:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:36,182 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-11-07 07:54:36,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:54:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-11-07 07:54:36,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 07:54:36,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:36,183 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:36,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:36,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:36,406 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:36,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1237131509, now seen corresponding path program 1 times [2021-11-07 07:54:36,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:36,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315486778] [2021-11-07 07:54:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:36,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:54:36,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:36,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315486778] [2021-11-07 07:54:36,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315486778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:36,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276900007] [2021-11-07 07:54:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:36,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:36,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:36,576 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:36,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:54:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:37,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:54:37,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:54:37,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276900007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:37,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:37,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-11-07 07:54:37,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069636837] [2021-11-07 07:54:37,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:54:37,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:54:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:54:37,249 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 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) [2021-11-07 07:54:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:37,362 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2021-11-07 07:54:37,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:54:37,363 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 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 50 [2021-11-07 07:54:37,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:37,364 INFO L225 Difference]: With dead ends: 95 [2021-11-07 07:54:37,364 INFO L226 Difference]: Without dead ends: 95 [2021-11-07 07:54:37,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:54:37,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-07 07:54:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-07 07:54:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 83 states have internal predecessors, (88), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2021-11-07 07:54:37,368 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 50 [2021-11-07 07:54:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:37,368 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2021-11-07 07:54:37,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 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) [2021-11-07 07:54:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2021-11-07 07:54:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 07:54:37,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:37,369 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:37,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:37,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:37,582 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:37,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1316363854, now seen corresponding path program 2 times [2021-11-07 07:54:37,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:37,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724873480] [2021-11-07 07:54:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:37,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:54:37,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:37,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724873480] [2021-11-07 07:54:37,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724873480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:37,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37038175] [2021-11-07 07:54:37,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:54:37,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:37,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:37,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:37,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:54:38,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:54:38,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:38,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:54:38,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:38,385 INFO L354 Elim1Store]: treesize reduction 157, result has 15.1 percent of original size [2021-11-07 07:54:38,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 70 [2021-11-07 07:54:38,391 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:54:38,391 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 270 treesize of output 262 [2021-11-07 07:54:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-07 07:54:41,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37038175] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:41,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:41,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-07 07:54:41,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835804200] [2021-11-07 07:54:41,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:54:41,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:54:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:54:41,700 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 07:54:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:42,134 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2021-11-07 07:54:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:54:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2021-11-07 07:54:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:42,135 INFO L225 Difference]: With dead ends: 100 [2021-11-07 07:54:42,135 INFO L226 Difference]: Without dead ends: 100 [2021-11-07 07:54:42,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:54:42,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-07 07:54:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-11-07 07:54:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 86 states have internal predecessors, (91), 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) [2021-11-07 07:54:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2021-11-07 07:54:42,138 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 53 [2021-11-07 07:54:42,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:42,138 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2021-11-07 07:54:42,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 07:54:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2021-11-07 07:54:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:54:42,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:42,139 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:42,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:42,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 07:54:42,339 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash 831186517, now seen corresponding path program 4 times [2021-11-07 07:54:42,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:42,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214664284] [2021-11-07 07:54:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:42,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 126 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:42,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:42,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214664284] [2021-11-07 07:54:42,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214664284] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:42,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023466861] [2021-11-07 07:54:42,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:54:42,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:42,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:42,678 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:42,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:54:43,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:54:43,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:43,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 07:54:43,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:44,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023466861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:44,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:44,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 37 [2021-11-07 07:54:44,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920062351] [2021-11-07 07:54:44,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 07:54:44,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 07:54:44,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:54:44,104 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 38 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 34 states have internal predecessors, (98), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:54:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:45,068 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2021-11-07 07:54:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:54:45,069 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 34 states have internal predecessors, (98), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2021-11-07 07:54:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:45,070 INFO L225 Difference]: With dead ends: 102 [2021-11-07 07:54:45,070 INFO L226 Difference]: Without dead ends: 102 [2021-11-07 07:54:45,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=510, Invalid=2570, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:54:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-07 07:54:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2021-11-07 07:54:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 87 states have internal predecessors, (92), 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) [2021-11-07 07:54:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2021-11-07 07:54:45,075 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 57 [2021-11-07 07:54:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:45,076 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2021-11-07 07:54:45,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 34 states have internal predecessors, (98), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:54:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2021-11-07 07:54:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:54:45,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:45,077 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:45,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:45,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:54:45,302 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1104035847, now seen corresponding path program 5 times [2021-11-07 07:54:45,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:45,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386983811] [2021-11-07 07:54:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:45,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 126 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:45,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:45,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386983811] [2021-11-07 07:54:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386983811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:45,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111399368] [2021-11-07 07:54:45,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:54:45,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:45,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:45,692 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:45,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 07:54:46,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-07 07:54:46,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:46,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 07:54:46,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 15 proven. 94 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 07:54:47,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111399368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:47,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:47,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 29 [2021-11-07 07:54:47,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500438491] [2021-11-07 07:54:47,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 07:54:47,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 07:54:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:54:47,027 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 30 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 26 states have internal predecessors, (82), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:54:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:47,946 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2021-11-07 07:54:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:54:47,946 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 26 states have internal predecessors, (82), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2021-11-07 07:54:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:47,947 INFO L225 Difference]: With dead ends: 107 [2021-11-07 07:54:47,948 INFO L226 Difference]: Without dead ends: 107 [2021-11-07 07:54:47,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=362, Invalid=1990, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:54:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-07 07:54:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-11-07 07:54:47,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 92 states have internal predecessors, (97), 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) [2021-11-07 07:54:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2021-11-07 07:54:47,952 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 62 [2021-11-07 07:54:47,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:47,953 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2021-11-07 07:54:47,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.8275862068965516) internal successors, (82), 26 states have internal predecessors, (82), 2 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:54:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2021-11-07 07:54:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 07:54:47,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:47,954 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:47,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:48,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:48,158 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:48,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash -226941547, now seen corresponding path program 6 times [2021-11-07 07:54:48,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:48,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005890573] [2021-11-07 07:54:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:48,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:48,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 07:54:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 126 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:48,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:48,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005890573] [2021-11-07 07:54:48,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005890573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:48,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890706341] [2021-11-07 07:54:48,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:54:48,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:48,602 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:48,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 07:54:49,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-07 07:54:49,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:49,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:54:49,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:49,544 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 07:54:49,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 07:54:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-07 07:54:50,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890706341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:54:50,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:54:50,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 29 [2021-11-07 07:54:50,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565935888] [2021-11-07 07:54:50,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:54:50,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:54:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:54:50,129 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-11-07 07:54:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:50,287 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2021-11-07 07:54:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:54:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 [2021-11-07 07:54:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:50,288 INFO L225 Difference]: With dead ends: 103 [2021-11-07 07:54:50,288 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 07:54:50,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 07:54:50,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 07:54:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-11-07 07:54:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 90 states have internal predecessors, (95), 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) [2021-11-07 07:54:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2021-11-07 07:54:50,293 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 67 [2021-11-07 07:54:50,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:50,293 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2021-11-07 07:54:50,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-11-07 07:54:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2021-11-07 07:54:50,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:54:50,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:50,295 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:50,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:50,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:50,522 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting getNumbers3Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2138009814, now seen corresponding path program 1 times [2021-11-07 07:54:50,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:50,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393971196] [2021-11-07 07:54:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:50,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:54:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-07 07:54:50,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:50,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393971196] [2021-11-07 07:54:50,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393971196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:54:50,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:54:50,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 07:54:50,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438578704] [2021-11-07 07:54:50,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:54:50,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:54:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:54:50,636 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:54:50,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:50,779 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-11-07 07:54:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:54:50,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2021-11-07 07:54:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:50,781 INFO L225 Difference]: With dead ends: 101 [2021-11-07 07:54:50,781 INFO L226 Difference]: Without dead ends: 101 [2021-11-07 07:54:50,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:54:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-07 07:54:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-07 07:54:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 89 states have internal predecessors, (94), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-11-07 07:54:50,785 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 72 [2021-11-07 07:54:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:50,785 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-11-07 07:54:50,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:54:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-11-07 07:54:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:54:50,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:50,786 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:50,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 07:54:50,786 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2138009815, now seen corresponding path program 1 times [2021-11-07 07:54:50,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:50,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755399452] [2021-11-07 07:54:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:50,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:54:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:54:50,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:50,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755399452] [2021-11-07 07:54:50,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755399452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:50,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142601440] [2021-11-07 07:54:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:50,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:50,965 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:50,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 07:54:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:51,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:54:51,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:54:51,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142601440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:51,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:51,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 12 [2021-11-07 07:54:51,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136796750] [2021-11-07 07:54:51,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:54:51,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:54:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:54:51,964 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:54:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:52,176 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-11-07 07:54:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:54:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 72 [2021-11-07 07:54:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:52,180 INFO L225 Difference]: With dead ends: 110 [2021-11-07 07:54:52,180 INFO L226 Difference]: Without dead ends: 110 [2021-11-07 07:54:52,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:54:52,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-07 07:54:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2021-11-07 07:54:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 94 states have internal predecessors, (99), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-11-07 07:54:52,184 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 72 [2021-11-07 07:54:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:52,185 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-11-07 07:54:52,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:54:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-11-07 07:54:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:54:52,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:52,186 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:52,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:52,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:52,406 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash 240860389, now seen corresponding path program 2 times [2021-11-07 07:54:52,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:52,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987135997] [2021-11-07 07:54:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:52,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:52,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:54:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:52,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:54:52,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:52,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987135997] [2021-11-07 07:54:52,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987135997] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:52,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604556482] [2021-11-07 07:54:52,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:54:52,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:52,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:52,598 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:52,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 07:54:53,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:54:53,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:53,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:54:53,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:53,833 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 07:54:53,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 07:54:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-07 07:54:54,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604556482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:54:54,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:54:54,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2021-11-07 07:54:54,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128329702] [2021-11-07 07:54:54,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:54:54,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:54:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:54:54,395 INFO L87 Difference]: Start difference. First operand 106 states and 110 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) [2021-11-07 07:54:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:54,512 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2021-11-07 07:54:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:54:54,512 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 77 [2021-11-07 07:54:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:54,513 INFO L225 Difference]: With dead ends: 113 [2021-11-07 07:54:54,513 INFO L226 Difference]: Without dead ends: 113 [2021-11-07 07:54:54,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:54:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-07 07:54:54,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2021-11-07 07:54:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 96 states have internal predecessors, (101), 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) [2021-11-07 07:54:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2021-11-07 07:54:54,517 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 77 [2021-11-07 07:54:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:54,518 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2021-11-07 07:54:54,518 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) [2021-11-07 07:54:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2021-11-07 07:54:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 07:54:54,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:54,519 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:54,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:54,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:54,730 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1123262533, now seen corresponding path program 1 times [2021-11-07 07:54:54,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:54,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463845471] [2021-11-07 07:54:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:54,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:54:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:54:54,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:54,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463845471] [2021-11-07 07:54:54,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463845471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:54,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557632996] [2021-11-07 07:54:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:54,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:54,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:54,878 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:54,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 07:54:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:56,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:54:56,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:54:56,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557632996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:56,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:54:56,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-11-07 07:54:56,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507668830] [2021-11-07 07:54:56,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:54:56,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:54:56,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:54:56,325 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 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) [2021-11-07 07:54:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:56,431 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2021-11-07 07:54:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:54:56,432 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 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 78 [2021-11-07 07:54:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:56,432 INFO L225 Difference]: With dead ends: 117 [2021-11-07 07:54:56,433 INFO L226 Difference]: Without dead ends: 117 [2021-11-07 07:54:56,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:54:56,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-07 07:54:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-11-07 07:54:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 101 states have internal predecessors, (106), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:54:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2021-11-07 07:54:56,436 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 78 [2021-11-07 07:54:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:56,437 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2021-11-07 07:54:56,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 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) [2021-11-07 07:54:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2021-11-07 07:54:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 07:54:56,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:56,438 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:56,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 07:54:56,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 07:54:56,662 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting getNumbers3Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:54:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1954125495, now seen corresponding path program 2 times [2021-11-07 07:54:56,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:56,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123328124] [2021-11-07 07:54:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:56,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:56,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:54:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:54:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:54:56,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:56,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123328124] [2021-11-07 07:54:56,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123328124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:54:56,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494433995] [2021-11-07 07:54:56,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:54:56,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:54:56,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:54:56,825 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:54:56,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 07:54:57,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:54:57,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:54:57,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:54:57,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:54:57,802 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-11-07 07:54:57,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 142 treesize of output 159 [2021-11-07 07:55:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-07 07:55:36,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494433995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:36,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:55:36,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2021-11-07 07:55:36,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764562149] [2021-11-07 07:55:36,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:55:36,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:36,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:55:36,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:55:36,883 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:36,909 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2021-11-07 07:55:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:55:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 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 83 [2021-11-07 07:55:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:36,910 INFO L225 Difference]: With dead ends: 112 [2021-11-07 07:55:36,910 INFO L226 Difference]: Without dead ends: 112 [2021-11-07 07:55:36,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:55:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-07 07:55:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-11-07 07:55:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 100 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) [2021-11-07 07:55:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2021-11-07 07:55:36,915 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 83 [2021-11-07 07:55:36,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:36,915 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2021-11-07 07:55:36,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:36,915 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2021-11-07 07:55:36,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 07:55:36,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:36,916 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:36,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-07 07:55:37,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:37,116 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:55:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:37,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1954125494, now seen corresponding path program 1 times [2021-11-07 07:55:37,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:37,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477978391] [2021-11-07 07:55:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:37,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:37,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:55:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:55:37,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:37,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477978391] [2021-11-07 07:55:37,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477978391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:37,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621479813] [2021-11-07 07:55:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:37,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:37,270 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:37,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 07:55:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:38,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:55:38,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:55:38,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621479813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:38,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:38,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-11-07 07:55:38,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703407548] [2021-11-07 07:55:38,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:55:38,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:55:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:55:38,792 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 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) [2021-11-07 07:55:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:38,862 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2021-11-07 07:55:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:55:38,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 83 [2021-11-07 07:55:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:38,863 INFO L225 Difference]: With dead ends: 121 [2021-11-07 07:55:38,863 INFO L226 Difference]: Without dead ends: 121 [2021-11-07 07:55:38,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:55:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-07 07:55:38,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-11-07 07:55:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 105 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) [2021-11-07 07:55:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-11-07 07:55:38,866 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 83 [2021-11-07 07:55:38,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:38,867 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-11-07 07:55:38,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 9 states have internal predecessors, (49), 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) [2021-11-07 07:55:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-11-07 07:55:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 07:55:38,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:38,868 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:38,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:39,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 07:55:39,082 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:55:39,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash 121251964, now seen corresponding path program 2 times [2021-11-07 07:55:39,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:39,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145713942] [2021-11-07 07:55:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:39,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:55:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:55:39,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:39,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145713942] [2021-11-07 07:55:39,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145713942] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:39,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677167609] [2021-11-07 07:55:39,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:55:39,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:39,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:39,266 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:39,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 07:55:40,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:55:40,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:40,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:55:40,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:40,873 INFO L354 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2021-11-07 07:55:40,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-07 07:55:40,876 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 83 treesize of output 81 [2021-11-07 07:55:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-07 07:55:44,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677167609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:44,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:55:44,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2021-11-07 07:55:44,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167103451] [2021-11-07 07:55:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:55:44,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:55:44,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:55:44,532 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:44,609 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2021-11-07 07:55:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:55:44,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 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 88 [2021-11-07 07:55:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:44,610 INFO L225 Difference]: With dead ends: 120 [2021-11-07 07:55:44,610 INFO L226 Difference]: Without dead ends: 120 [2021-11-07 07:55:44,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:55:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-07 07:55:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-11-07 07:55:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.121212121212121) internal successors, (111), 106 states have internal predecessors, (111), 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) [2021-11-07 07:55:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2021-11-07 07:55:44,614 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 88 [2021-11-07 07:55:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:44,615 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2021-11-07 07:55:44,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 07:55:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2021-11-07 07:55:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 07:55:44,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:44,616 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 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] [2021-11-07 07:55:44,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:44,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-07 07:55:44,830 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:55:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash 347828767, now seen corresponding path program 1 times [2021-11-07 07:55:44,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:44,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447733572] [2021-11-07 07:55:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:44,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:55:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-07 07:55:45,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:45,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447733572] [2021-11-07 07:55:45,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447733572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:45,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228233824] [2021-11-07 07:55:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:45,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:45,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:45,054 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:45,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 07:55:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:46,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:55:46,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-07 07:55:46,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228233824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:46,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:46,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-11-07 07:55:46,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531980618] [2021-11-07 07:55:46,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:55:46,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:46,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:55:46,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:55:46,705 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:55:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:46,785 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2021-11-07 07:55:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:55:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2021-11-07 07:55:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:46,786 INFO L225 Difference]: With dead ends: 127 [2021-11-07 07:55:46,786 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 07:55:46,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:55:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 07:55:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2021-11-07 07:55:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 111 states have internal predecessors, (116), 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) [2021-11-07 07:55:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2021-11-07 07:55:46,790 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 92 [2021-11-07 07:55:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:46,790 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2021-11-07 07:55:46,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:55:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2021-11-07 07:55:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 07:55:46,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:46,792 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 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] [2021-11-07 07:55:46,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:46,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 07:55:46,998 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:55:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1809405139, now seen corresponding path program 2 times [2021-11-07 07:55:46,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:46,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047745077] [2021-11-07 07:55:46,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:46,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:55:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-07 07:55:47,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:47,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047745077] [2021-11-07 07:55:47,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047745077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:47,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061348025] [2021-11-07 07:55:47,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:55:47,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:47,229 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:47,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 07:55:48,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:55:48,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:48,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:55:48,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-07 07:55:48,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061348025] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:48,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:48,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-11-07 07:55:48,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482820854] [2021-11-07 07:55:48,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:55:48,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:55:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:55:48,990 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:55:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:49,079 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2021-11-07 07:55:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:55:49,079 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2021-11-07 07:55:49,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:49,080 INFO L225 Difference]: With dead ends: 132 [2021-11-07 07:55:49,080 INFO L226 Difference]: Without dead ends: 132 [2021-11-07 07:55:49,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:55:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-07 07:55:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2021-11-07 07:55:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 109 states have (on average 1.110091743119266) internal successors, (121), 116 states have internal predecessors, (121), 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) [2021-11-07 07:55:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2021-11-07 07:55:49,084 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 97 [2021-11-07 07:55:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:49,084 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2021-11-07 07:55:49,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:55:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2021-11-07 07:55:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 07:55:49,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:49,085 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 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] [2021-11-07 07:55:49,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:49,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 07:55:49,285 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:55:49,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:49,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1538976479, now seen corresponding path program 3 times [2021-11-07 07:55:49,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:49,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928306794] [2021-11-07 07:55:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:49,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:55:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-07 07:55:49,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:49,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928306794] [2021-11-07 07:55:49,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928306794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:49,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910716990] [2021-11-07 07:55:49,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:55:49,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:49,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:49,518 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:49,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 07:55:51,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:55:51,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:55:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:55:51,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-07 07:55:51,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910716990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:51,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:51,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 22 [2021-11-07 07:55:51,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164111045] [2021-11-07 07:55:51,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 07:55:51,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:51,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 07:55:51,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:55:51,529 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:55:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:52,109 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2021-11-07 07:55:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:55:52,110 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 102 [2021-11-07 07:55:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:52,111 INFO L225 Difference]: With dead ends: 141 [2021-11-07 07:55:52,111 INFO L226 Difference]: Without dead ends: 141 [2021-11-07 07:55:52,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:55:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-07 07:55:52,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2021-11-07 07:55:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.1016949152542372) 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) [2021-11-07 07:55:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2021-11-07 07:55:52,115 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 102 [2021-11-07 07:55:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:52,115 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2021-11-07 07:55:52,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 19 states have internal predecessors, (94), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:55:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2021-11-07 07:55:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 07:55:52,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:52,116 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:52,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-07 07:55:52,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:52,316 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:55:52,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1424007988, now seen corresponding path program 1 times [2021-11-07 07:55:52,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:52,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759053573] [2021-11-07 07:55:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:52,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:55:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:55:52,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:52,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759053573] [2021-11-07 07:55:52,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759053573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:52,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041377704] [2021-11-07 07:55:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:52,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:52,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:52,630 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:52,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 07:55:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:55:54,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:55:54,327 INFO L354 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2021-11-07 07:55:54,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-07 07:55:54,331 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 261 treesize of output 259 [2021-11-07 07:55:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:55:58,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041377704] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:58,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:55:58,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-11-07 07:55:58,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819471841] [2021-11-07 07:55:58,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:55:58,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:55:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:55:58,820 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:55:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:55:59,038 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2021-11-07 07:55:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:55:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 108 [2021-11-07 07:55:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:55:59,040 INFO L225 Difference]: With dead ends: 140 [2021-11-07 07:55:59,040 INFO L226 Difference]: Without dead ends: 140 [2021-11-07 07:55:59,040 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:55:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-07 07:55:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-11-07 07:55:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 119 states have (on average 1.1008403361344539) internal successors, (131), 126 states have internal predecessors, (131), 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) [2021-11-07 07:55:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2021-11-07 07:55:59,044 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 108 [2021-11-07 07:55:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:55:59,044 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2021-11-07 07:55:59,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:55:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2021-11-07 07:55:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 07:55:59,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:55:59,046 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:55:59,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 07:55:59,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-07 07:55:59,250 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:55:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:55:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -524955433, now seen corresponding path program 4 times [2021-11-07 07:55:59,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:55:59,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846549534] [2021-11-07 07:55:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:55:59,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:55:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:55:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:55:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 207 proven. 37 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:55:59,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:59,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846549534] [2021-11-07 07:55:59,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846549534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:55:59,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495563062] [2021-11-07 07:55:59,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:55:59,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:55:59,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:55:59,630 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:55:59,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 07:56:01,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:56:01,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:01,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 07:56:01,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 164 proven. 80 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:56:02,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495563062] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:02,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:02,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 37 [2021-11-07 07:56:02,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069943806] [2021-11-07 07:56:02,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 07:56:02,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 07:56:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:56:02,329 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand has 38 states, 37 states have (on average 3.945945945945946) internal successors, (146), 34 states have internal predecessors, (146), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:56:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:03,428 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2021-11-07 07:56:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:56:03,429 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.945945945945946) internal successors, (146), 34 states have internal predecessors, (146), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 112 [2021-11-07 07:56:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:03,430 INFO L225 Difference]: With dead ends: 146 [2021-11-07 07:56:03,430 INFO L226 Difference]: Without dead ends: 146 [2021-11-07 07:56:03,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=497, Invalid=2473, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:56:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-07 07:56:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2021-11-07 07:56:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 123 states have (on average 1.0975609756097562) internal successors, (135), 130 states have internal predecessors, (135), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:56:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2021-11-07 07:56:03,436 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 112 [2021-11-07 07:56:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:03,436 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2021-11-07 07:56:03,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.945945945945946) internal successors, (146), 34 states have internal predecessors, (146), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-07 07:56:03,436 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2021-11-07 07:56:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 07:56:03,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:03,437 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:03,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:03,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:03,638 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting getNumbers3Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 906250762, now seen corresponding path program 2 times [2021-11-07 07:56:03,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:03,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500528381] [2021-11-07 07:56:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:03,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:03,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:56:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:03,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:56:03,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:03,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500528381] [2021-11-07 07:56:03,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500528381] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:03,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141000018] [2021-11-07 07:56:03,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:03,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:03,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:03,843 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:03,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 07:56:05,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:56:05,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:05,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:56:05,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:05,810 INFO L354 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2021-11-07 07:56:05,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-07 07:56:05,814 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 138 treesize of output 136 [2021-11-07 07:56:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-11-07 07:56:11,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141000018] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:11,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:11,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-07 07:56:11,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487164185] [2021-11-07 07:56:11,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:56:11,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:56:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:56:11,194 INFO L87 Difference]: Start difference. First operand 142 states and 146 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 11 states have internal predecessors, (59), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:56:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:11,713 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2021-11-07 07:56:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:56:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 11 states have internal predecessors, (59), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 113 [2021-11-07 07:56:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:11,715 INFO L225 Difference]: With dead ends: 147 [2021-11-07 07:56:11,715 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 07:56:11,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:56:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 07:56:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2021-11-07 07:56:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 127 states have (on average 1.0866141732283465) internal successors, (138), 133 states have internal predecessors, (138), 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) [2021-11-07 07:56:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2021-11-07 07:56:11,721 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 113 [2021-11-07 07:56:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:11,722 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2021-11-07 07:56:11,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 11 states have internal predecessors, (59), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 07:56:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2021-11-07 07:56:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 07:56:11,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:11,723 INFO L513 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] [2021-11-07 07:56:11,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-07 07:56:11,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:11,946 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:11,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1487004499, now seen corresponding path program 5 times [2021-11-07 07:56:11,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:11,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814116643] [2021-11-07 07:56:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:11,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:56:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 207 proven. 49 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:56:12,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:12,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814116643] [2021-11-07 07:56:12,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814116643] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:12,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545969122] [2021-11-07 07:56:12,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:56:12,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:12,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:12,387 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:12,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 07:56:21,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-07 07:56:21,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:21,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 07:56:21,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 24 proven. 139 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-07 07:56:22,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545969122] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:22,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:22,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 33 [2021-11-07 07:56:22,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080444635] [2021-11-07 07:56:22,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:56:22,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:22,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:56:22,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:56:22,252 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 34 states, 33 states have (on average 4.090909090909091) internal successors, (135), 30 states have internal predecessors, (135), 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) [2021-11-07 07:56:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:23,338 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2021-11-07 07:56:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:56:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.090909090909091) internal successors, (135), 30 states have internal predecessors, (135), 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 [2021-11-07 07:56:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:23,340 INFO L225 Difference]: With dead ends: 149 [2021-11-07 07:56:23,340 INFO L226 Difference]: Without dead ends: 149 [2021-11-07 07:56:23,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=434, Invalid=2218, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:56:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-07 07:56:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-11-07 07:56:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 128 states have (on average 1.0859375) internal successors, (139), 134 states have internal predecessors, (139), 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) [2021-11-07 07:56:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2021-11-07 07:56:23,345 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 117 [2021-11-07 07:56:23,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:23,346 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2021-11-07 07:56:23,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.090909090909091) internal successors, (135), 30 states have internal predecessors, (135), 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) [2021-11-07 07:56:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2021-11-07 07:56:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 07:56:23,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:23,347 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:23,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:23,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 07:56:23,562 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting getNumbers3Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:23,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:23,563 INFO L85 PathProgramCache]: Analyzing trace with hash 844744343, now seen corresponding path program 6 times [2021-11-07 07:56:23,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:23,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600241036] [2021-11-07 07:56:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:23,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:23,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-07 07:56:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-07 07:56:24,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:24,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600241036] [2021-11-07 07:56:24,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600241036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:24,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090507698] [2021-11-07 07:56:24,023 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:56:24,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:24,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:24,025 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:24,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 07:56:26,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-07 07:56:26,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:26,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:56:26,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:26,601 INFO L354 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2021-11-07 07:56:26,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-07 07:56:26,618 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 237 treesize of output 233 [2021-11-07 07:56:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-11-07 07:56:32,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090507698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:56:32,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:56:32,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [22] total 29 [2021-11-07 07:56:32,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553783528] [2021-11-07 07:56:32,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:56:32,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:32,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:56:32,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:56:32,059 INFO L87 Difference]: Start difference. First operand 146 states and 150 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) [2021-11-07 07:56:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:32,373 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2021-11-07 07:56:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:56:32,374 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 [2021-11-07 07:56:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:32,375 INFO L225 Difference]: With dead ends: 145 [2021-11-07 07:56:32,375 INFO L226 Difference]: Without dead ends: 145 [2021-11-07 07:56:32,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 07:56:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-07 07:56:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2021-11-07 07:56:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 127 states have (on average 1.078740157480315) internal successors, (137), 132 states have internal predecessors, (137), 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) [2021-11-07 07:56:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2021-11-07 07:56:32,381 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 122 [2021-11-07 07:56:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:32,381 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2021-11-07 07:56:32,381 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) [2021-11-07 07:56:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2021-11-07 07:56:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 07:56:32,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:32,383 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:32,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:32,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-07 07:56:32,602 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting getNumbers4Err0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash -371170992, now seen corresponding path program 1 times [2021-11-07 07:56:32,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:32,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612656176] [2021-11-07 07:56:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:32,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-07 07:56:32,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:32,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612656176] [2021-11-07 07:56:32,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612656176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:56:32,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:56:32,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 07:56:32,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124396572] [2021-11-07 07:56:32,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:56:32,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:32,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:56:32,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:56:32,766 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:56:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:32,941 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2021-11-07 07:56:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:56:32,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 127 [2021-11-07 07:56:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:32,946 INFO L225 Difference]: With dead ends: 143 [2021-11-07 07:56:32,946 INFO L226 Difference]: Without dead ends: 143 [2021-11-07 07:56:32,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:56:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-07 07:56:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-07 07:56:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 127 states have (on average 1.0708661417322836) internal successors, (136), 131 states have internal predecessors, (136), 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) [2021-11-07 07:56:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-07 07:56:32,950 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 127 [2021-11-07 07:56:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:32,951 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-07 07:56:32,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:56:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-07 07:56:32,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 07:56:32,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:32,952 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:32,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 07:56:32,953 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -371170991, now seen corresponding path program 1 times [2021-11-07 07:56:32,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:32,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248833332] [2021-11-07 07:56:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:32,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:56:33,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:33,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248833332] [2021-11-07 07:56:33,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248833332] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:33,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283956644] [2021-11-07 07:56:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:33,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:33,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:33,134 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:33,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 07:56:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:36,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:56:36,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:56:36,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283956644] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:36,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:36,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-11-07 07:56:36,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145312202] [2021-11-07 07:56:36,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:56:36,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:36,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:56:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:56:36,327 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:36,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:36,409 INFO L93 Difference]: Finished difference Result 152 states and 156 transitions. [2021-11-07 07:56:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:56:36,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 127 [2021-11-07 07:56:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:36,411 INFO L225 Difference]: With dead ends: 152 [2021-11-07 07:56:36,411 INFO L226 Difference]: Without dead ends: 152 [2021-11-07 07:56:36,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:56:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-07 07:56:36,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-11-07 07:56:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 132 states have (on average 1.0681818181818181) internal successors, (141), 136 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) [2021-11-07 07:56:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 152 transitions. [2021-11-07 07:56:36,416 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 152 transitions. Word has length 127 [2021-11-07 07:56:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:36,416 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 152 transitions. [2021-11-07 07:56:36,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 152 transitions. [2021-11-07 07:56:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 07:56:36,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:36,418 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:36,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-11-07 07:56:36,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 07:56:36,638 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1244147387, now seen corresponding path program 2 times [2021-11-07 07:56:36,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:36,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568978903] [2021-11-07 07:56:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:36,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:36,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:36,826 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:56:36,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:36,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568978903] [2021-11-07 07:56:36,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568978903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:36,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910654986] [2021-11-07 07:56:36,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:36,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:36,828 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:36,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 07:56:39,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:56:39,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:39,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:56:39,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:39,459 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 07:56:39,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 07:56:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-07 07:56:40,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910654986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:56:40,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:56:40,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2021-11-07 07:56:40,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207372205] [2021-11-07 07:56:40,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:56:40,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:56:40,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:56:40,222 INFO L87 Difference]: Start difference. First operand 148 states and 152 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:56:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:40,310 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2021-11-07 07:56:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:56:40,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 132 [2021-11-07 07:56:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:40,311 INFO L225 Difference]: With dead ends: 155 [2021-11-07 07:56:40,311 INFO L226 Difference]: Without dead ends: 155 [2021-11-07 07:56:40,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:56:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-07 07:56:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2021-11-07 07:56:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 134 states have (on average 1.0671641791044777) internal successors, (143), 138 states have internal predecessors, (143), 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) [2021-11-07 07:56:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2021-11-07 07:56:40,316 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 132 [2021-11-07 07:56:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:40,316 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2021-11-07 07:56:40,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:56:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2021-11-07 07:56:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 07:56:40,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:40,318 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:40,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-11-07 07:56:40,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-07 07:56:40,526 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting getNumbers4Err2REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash -86136715, now seen corresponding path program 1 times [2021-11-07 07:56:40,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:40,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400363144] [2021-11-07 07:56:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:40,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-07 07:56:40,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:40,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400363144] [2021-11-07 07:56:40,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400363144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:56:40,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:56:40,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:56:40,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130535383] [2021-11-07 07:56:40,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:56:40,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:56:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:56:40,694 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 07:56:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:40,821 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2021-11-07 07:56:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:56:40,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 133 [2021-11-07 07:56:40,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:40,822 INFO L225 Difference]: With dead ends: 149 [2021-11-07 07:56:40,823 INFO L226 Difference]: Without dead ends: 149 [2021-11-07 07:56:40,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:56:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-07 07:56:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-11-07 07:56:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 134 states have (on average 1.0597014925373134) internal successors, (142), 137 states have internal predecessors, (142), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:56:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2021-11-07 07:56:40,827 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 133 [2021-11-07 07:56:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:40,828 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2021-11-07 07:56:40,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 07:56:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2021-11-07 07:56:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 07:56:40,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:40,829 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:40,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 07:56:40,829 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:40,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash -86136714, now seen corresponding path program 1 times [2021-11-07 07:56:40,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:40,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190243835] [2021-11-07 07:56:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:40,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:56:41,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:41,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190243835] [2021-11-07 07:56:41,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190243835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:41,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184199796] [2021-11-07 07:56:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:41,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:41,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:41,022 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:41,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 07:56:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:43,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:56:43,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:56:44,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184199796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:44,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:44,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-11-07 07:56:44,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318659271] [2021-11-07 07:56:44,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:56:44,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:56:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:56:44,089 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:44,187 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2021-11-07 07:56:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:56:44,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 133 [2021-11-07 07:56:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:44,189 INFO L225 Difference]: With dead ends: 158 [2021-11-07 07:56:44,189 INFO L226 Difference]: Without dead ends: 158 [2021-11-07 07:56:44,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:56:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-07 07:56:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2021-11-07 07:56:44,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 139 states have (on average 1.0575539568345325) internal successors, (147), 142 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) [2021-11-07 07:56:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2021-11-07 07:56:44,194 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 133 [2021-11-07 07:56:44,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:44,195 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2021-11-07 07:56:44,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:44,195 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2021-11-07 07:56:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 07:56:44,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:44,196 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:44,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:44,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 07:56:44,422 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:44,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 246169184, now seen corresponding path program 2 times [2021-11-07 07:56:44,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:44,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35074994] [2021-11-07 07:56:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:44,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:44,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:44,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:56:44,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:44,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35074994] [2021-11-07 07:56:44,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35074994] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:44,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549322803] [2021-11-07 07:56:44,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:44,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:44,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:44,730 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:44,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 07:56:47,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:56:47,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:47,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:56:47,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:47,532 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 07:56:47,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 07:56:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-07 07:56:48,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549322803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:56:48,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:56:48,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2021-11-07 07:56:48,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65882974] [2021-11-07 07:56:48,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:56:48,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:56:48,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:56:48,326 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:56:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:48,382 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2021-11-07 07:56:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:56:48,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-11-07 07:56:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:48,384 INFO L225 Difference]: With dead ends: 157 [2021-11-07 07:56:48,384 INFO L226 Difference]: Without dead ends: 157 [2021-11-07 07:56:48,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:56:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-07 07:56:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2021-11-07 07:56:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 140 states have (on average 1.0571428571428572) internal successors, (148), 143 states have internal predecessors, (148), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:56:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2021-11-07 07:56:48,389 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 138 [2021-11-07 07:56:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:48,390 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2021-11-07 07:56:48,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 07:56:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2021-11-07 07:56:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 07:56:48,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:48,392 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:48,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:48,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:48,614 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:48,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1200712195, now seen corresponding path program 1 times [2021-11-07 07:56:48,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:48,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883958430] [2021-11-07 07:56:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:48,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-07 07:56:48,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:48,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883958430] [2021-11-07 07:56:48,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883958430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:48,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247649319] [2021-11-07 07:56:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:48,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:48,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:48,842 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:48,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 07:56:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:51,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:56:51,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-07 07:56:52,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247649319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:52,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:52,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-11-07 07:56:52,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475868860] [2021-11-07 07:56:52,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:56:52,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:52,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:56:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:56:52,004 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:52,078 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2021-11-07 07:56:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:56:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 142 [2021-11-07 07:56:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:52,080 INFO L225 Difference]: With dead ends: 164 [2021-11-07 07:56:52,080 INFO L226 Difference]: Without dead ends: 164 [2021-11-07 07:56:52,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:56:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-07 07:56:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2021-11-07 07:56:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.0551724137931036) internal successors, (153), 148 states have internal predecessors, (153), 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) [2021-11-07 07:56:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 164 transitions. [2021-11-07 07:56:52,085 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 164 transitions. Word has length 142 [2021-11-07 07:56:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:52,085 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 164 transitions. [2021-11-07 07:56:52,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 164 transitions. [2021-11-07 07:56:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-07 07:56:52,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:52,087 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:52,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 07:56:52,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-07 07:56:52,318 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:52,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:52,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1518609575, now seen corresponding path program 2 times [2021-11-07 07:56:52,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:52,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380888669] [2021-11-07 07:56:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:52,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-07 07:56:52,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:52,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380888669] [2021-11-07 07:56:52,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380888669] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:52,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320176219] [2021-11-07 07:56:52,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:56:52,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:52,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:52,582 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:52,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 07:56:55,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:56:55,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:55,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:56:55,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-07 07:56:55,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320176219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:55,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:55,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-11-07 07:56:55,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516238670] [2021-11-07 07:56:55,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:56:55,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:56:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:56:55,763 INFO L87 Difference]: Start difference. First operand 160 states and 164 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:56:55,886 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2021-11-07 07:56:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:56:55,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 147 [2021-11-07 07:56:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:56:55,888 INFO L225 Difference]: With dead ends: 169 [2021-11-07 07:56:55,888 INFO L226 Difference]: Without dead ends: 169 [2021-11-07 07:56:55,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:56:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-07 07:56:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2021-11-07 07:56:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 150 states have (on average 1.0533333333333332) internal successors, (158), 153 states have internal predecessors, (158), 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) [2021-11-07 07:56:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2021-11-07 07:56:55,895 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 147 [2021-11-07 07:56:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:56:55,895 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2021-11-07 07:56:55,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 10 states have internal predecessors, (66), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:56:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2021-11-07 07:56:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 07:56:55,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:56:55,897 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:56:55,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-11-07 07:56:56,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-07 07:56:56,110 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:56:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:56:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash -802107453, now seen corresponding path program 3 times [2021-11-07 07:56:56,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:56:56,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436271682] [2021-11-07 07:56:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:56:56,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:56:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:56:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:56:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:56:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2021-11-07 07:56:56,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:56:56,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436271682] [2021-11-07 07:56:56,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436271682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:56,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861810875] [2021-11-07 07:56:56,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:56:56,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:56:56,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:56:56,455 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:56:56,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 07:56:59,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:56:59,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:56:59,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:56:59,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:56:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-07 07:56:59,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861810875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:56:59,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:56:59,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2021-11-07 07:56:59,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382810389] [2021-11-07 07:56:59,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:56:59,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:56:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:56:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:56:59,859 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 18 states have internal predecessors, (107), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-07 07:57:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:00,462 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2021-11-07 07:57:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:57:00,462 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 18 states have internal predecessors, (107), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 152 [2021-11-07 07:57:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:00,464 INFO L225 Difference]: With dead ends: 186 [2021-11-07 07:57:00,464 INFO L226 Difference]: Without dead ends: 186 [2021-11-07 07:57:00,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:57:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-07 07:57:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 174. [2021-11-07 07:57:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 159 states have (on average 1.050314465408805) internal successors, (167), 162 states have internal predecessors, (167), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:57:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2021-11-07 07:57:00,470 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 152 [2021-11-07 07:57:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:00,470 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2021-11-07 07:57:00,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.095238095238095) internal successors, (107), 18 states have internal predecessors, (107), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-07 07:57:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2021-11-07 07:57:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 07:57:00,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:00,472 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:57:00,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:00,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:00,698 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:57:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash -513039016, now seen corresponding path program 1 times [2021-11-07 07:57:00,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:00,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774777257] [2021-11-07 07:57:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:00,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:00,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-11-07 07:57:00,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:00,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774777257] [2021-11-07 07:57:00,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774777257] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:00,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036218531] [2021-11-07 07:57:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:00,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:00,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:00,974 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:00,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 07:57:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:03,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:57:03,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-11-07 07:57:04,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036218531] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:04,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:04,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-11-07 07:57:04,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883473878] [2021-11-07 07:57:04,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:57:04,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:04,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:57:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:57:04,266 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 12 states have internal predecessors, (76), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:57:04,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:04,355 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2021-11-07 07:57:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:57:04,355 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 12 states have internal predecessors, (76), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 158 [2021-11-07 07:57:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:04,356 INFO L225 Difference]: With dead ends: 179 [2021-11-07 07:57:04,357 INFO L226 Difference]: Without dead ends: 179 [2021-11-07 07:57:04,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:57:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-07 07:57:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-07 07:57:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 164 states have (on average 1.048780487804878) internal successors, (172), 167 states have internal predecessors, (172), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 07:57:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2021-11-07 07:57:04,363 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 158 [2021-11-07 07:57:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:04,364 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 183 transitions. [2021-11-07 07:57:04,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 12 states have internal predecessors, (76), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 07:57:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 183 transitions. [2021-11-07 07:57:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 07:57:04,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:04,366 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:57:04,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:04,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-07 07:57:04,582 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting getNumbers4Err3REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:57:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1063561902, now seen corresponding path program 2 times [2021-11-07 07:57:04,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:04,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640788276] [2021-11-07 07:57:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:04,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:04,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-11-07 07:57:04,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:04,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640788276] [2021-11-07 07:57:04,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640788276] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:04,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779437148] [2021-11-07 07:57:04,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:57:04,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:04,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:04,818 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:04,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 07:57:07,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:57:07,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:07,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:57:07,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:07,876 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 07:57:07,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 07:57:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-11-07 07:57:09,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779437148] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:09,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:09,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-11-07 07:57:09,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34068375] [2021-11-07 07:57:09,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:57:09,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:57:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:57:09,328 INFO L87 Difference]: Start difference. First operand 179 states and 183 transitions. Second operand has 13 states, 12 states have (on average 6.0) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-07 07:57:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:09,606 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2021-11-07 07:57:09,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:57:09,607 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.0) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 163 [2021-11-07 07:57:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:09,608 INFO L225 Difference]: With dead ends: 184 [2021-11-07 07:57:09,608 INFO L226 Difference]: Without dead ends: 184 [2021-11-07 07:57:09,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:57:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-07 07:57:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2021-11-07 07:57:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 168 states have (on average 1.0416666666666667) internal successors, (175), 170 states have internal predecessors, (175), 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) [2021-11-07 07:57:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 186 transitions. [2021-11-07 07:57:09,614 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 186 transitions. Word has length 163 [2021-11-07 07:57:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:09,614 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 186 transitions. [2021-11-07 07:57:09,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.0) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-07 07:57:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 186 transitions. [2021-11-07 07:57:09,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 07:57:09,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:09,616 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:57:09,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:09,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-07 07:57:09,826 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:57:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1384054609, now seen corresponding path program 4 times [2021-11-07 07:57:09,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:09,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292142337] [2021-11-07 07:57:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:09,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 207 proven. 37 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:57:10,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:10,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292142337] [2021-11-07 07:57:10,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292142337] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:10,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16779638] [2021-11-07 07:57:10,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:57:10,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:10,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:10,367 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:10,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-07 07:57:13,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:57:13,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:57:13,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 07:57:13,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:57:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 164 proven. 80 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:57:14,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16779638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:14,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:57:14,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 35 [2021-11-07 07:57:14,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887934856] [2021-11-07 07:57:14,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 07:57:14,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:57:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 07:57:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:57:14,487 INFO L87 Difference]: Start difference. First operand 182 states and 186 transitions. Second operand has 36 states, 35 states have (on average 4.285714285714286) internal successors, (150), 33 states have internal predecessors, (150), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-07 07:57:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:57:15,321 INFO L93 Difference]: Finished difference Result 186 states and 190 transitions. [2021-11-07 07:57:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:57:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.285714285714286) internal successors, (150), 33 states have internal predecessors, (150), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 167 [2021-11-07 07:57:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:57:15,324 INFO L225 Difference]: With dead ends: 186 [2021-11-07 07:57:15,324 INFO L226 Difference]: Without dead ends: 186 [2021-11-07 07:57:15,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=482, Invalid=2170, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:57:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-07 07:57:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2021-11-07 07:57:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 169 states have (on average 1.0414201183431953) internal successors, (176), 171 states have internal predecessors, (176), 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) [2021-11-07 07:57:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2021-11-07 07:57:15,331 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 167 [2021-11-07 07:57:15,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:57:15,331 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2021-11-07 07:57:15,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.285714285714286) internal successors, (150), 33 states have internal predecessors, (150), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-07 07:57:15,332 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2021-11-07 07:57:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-07 07:57:15,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:57:15,333 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2021-11-07 07:57:15,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-07 07:57:15,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-07 07:57:15,546 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 07:57:15,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:57:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 932574787, now seen corresponding path program 5 times [2021-11-07 07:57:15,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:57:15,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200860041] [2021-11-07 07:57:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:57:15,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:57:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 07:57:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 07:57:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:57:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 207 proven. 49 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 07:57:16,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:57:16,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200860041] [2021-11-07 07:57:16,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200860041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:57:16,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875048428] [2021-11-07 07:57:16,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:57:16,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:57:16,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:57:16,102 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:57:16,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-07 07:59:55,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-07 07:59:55,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:59:56,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 07:59:56,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:59:56,083 INFO L354 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2021-11-07 07:59:56,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-07 07:59:56,087 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 157 treesize of output 153 [2021-11-07 08:00:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-11-07 08:00:03,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875048428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:03,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:03,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 8] total 28 [2021-11-07 08:00:03,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88128088] [2021-11-07 08:00:03,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 08:00:03,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 08:00:03,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:00:03,302 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand has 29 states, 28 states have (on average 4.821428571428571) internal successors, (135), 25 states have internal predecessors, (135), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-07 08:00:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:04,059 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2021-11-07 08:00:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 08:00:04,060 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.821428571428571) internal successors, (135), 25 states have internal predecessors, (135), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 172 [2021-11-07 08:00:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:04,061 INFO L225 Difference]: With dead ends: 191 [2021-11-07 08:00:04,061 INFO L226 Difference]: Without dead ends: 191 [2021-11-07 08:00:04,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=331, Invalid=1739, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:00:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-07 08:00:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2021-11-07 08:00:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 174 states have (on average 1.0402298850574712) internal successors, (181), 176 states have internal predecessors, (181), 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) [2021-11-07 08:00:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2021-11-07 08:00:04,067 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 172 [2021-11-07 08:00:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:04,067 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 192 transitions. [2021-11-07 08:00:04,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.821428571428571) internal successors, (135), 25 states have internal predecessors, (135), 4 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-07 08:00:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 192 transitions. [2021-11-07 08:00:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-07 08:00:04,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:04,069 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:04,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:04,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-07 08:00:04,294 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting getNumbers4Err1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:04,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1969063569, now seen corresponding path program 6 times [2021-11-07 08:00:04,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:04,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771617720] [2021-11-07 08:00:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:04,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-07 08:00:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 207 proven. 66 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2021-11-07 08:00:04,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:04,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771617720] [2021-11-07 08:00:04,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771617720] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:04,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296794649] [2021-11-07 08:00:04,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:00:04,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:04,870 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:04,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-07 08:00:08,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-07 08:00:08,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:08,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 08:00:08,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:08,614 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 08:00:08,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 08:00:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2021-11-07 08:00:09,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296794649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:09,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:00:09,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [22] total 29 [2021-11-07 08:00:09,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803229034] [2021-11-07 08:00:09,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:00:09,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:09,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:00:09,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:00:09,780 INFO L87 Difference]: Start difference. First operand 188 states and 192 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 08:00:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:09,922 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2021-11-07 08:00:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:00:09,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 177 [2021-11-07 08:00:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:09,923 INFO L225 Difference]: With dead ends: 187 [2021-11-07 08:00:09,923 INFO L226 Difference]: Without dead ends: 187 [2021-11-07 08:00:09,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:00:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-07 08:00:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-11-07 08:00:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 173 states have (on average 1.0346820809248556) internal successors, (179), 174 states have internal predecessors, (179), 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) [2021-11-07 08:00:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2021-11-07 08:00:09,930 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 177 [2021-11-07 08:00:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:09,930 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2021-11-07 08:00:09,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 08:00:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2021-11-07 08:00:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-07 08:00:09,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:09,932 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:09,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:10,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:10,145 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1504416964, now seen corresponding path program 1 times [2021-11-07 08:00:10,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:10,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365417242] [2021-11-07 08:00:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:10,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-11-07 08:00:10,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:10,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365417242] [2021-11-07 08:00:10,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365417242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:10,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:00:10,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:00:10,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263044489] [2021-11-07 08:00:10,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:00:10,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:10,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:00:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:00:10,450 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 08:00:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:10,603 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2021-11-07 08:00:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:00:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 182 [2021-11-07 08:00:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:10,605 INFO L225 Difference]: With dead ends: 185 [2021-11-07 08:00:10,605 INFO L226 Difference]: Without dead ends: 185 [2021-11-07 08:00:10,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:00:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-07 08:00:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-11-07 08:00:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 173 states have (on average 1.0289017341040463) internal successors, (178), 173 states have internal predecessors, (178), 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) [2021-11-07 08:00:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2021-11-07 08:00:10,610 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 182 [2021-11-07 08:00:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:10,610 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2021-11-07 08:00:10,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 08:00:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2021-11-07 08:00:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-07 08:00:10,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:10,612 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:10,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 08:00:10,612 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1504416963, now seen corresponding path program 1 times [2021-11-07 08:00:10,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:10,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426132402] [2021-11-07 08:00:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:10,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-11-07 08:00:10,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:10,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426132402] [2021-11-07 08:00:10,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426132402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:10,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996138611] [2021-11-07 08:00:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:10,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:10,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:10,943 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:10,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-07 08:00:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:14,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:00:14,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-11-07 08:00:15,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996138611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:15,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:15,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-11-07 08:00:15,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158197831] [2021-11-07 08:00:15,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:00:15,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:00:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:00:15,248 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:15,360 INFO L93 Difference]: Finished difference Result 194 states and 198 transitions. [2021-11-07 08:00:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:00:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 182 [2021-11-07 08:00:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:15,362 INFO L225 Difference]: With dead ends: 194 [2021-11-07 08:00:15,362 INFO L226 Difference]: Without dead ends: 194 [2021-11-07 08:00:15,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:00:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-07 08:00:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2021-11-07 08:00:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 178 states have (on average 1.0280898876404494) internal successors, (183), 178 states have internal predecessors, (183), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 08:00:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 194 transitions. [2021-11-07 08:00:15,366 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 194 transitions. Word has length 182 [2021-11-07 08:00:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:15,366 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 194 transitions. [2021-11-07 08:00:15,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 194 transitions. [2021-11-07 08:00:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-07 08:00:15,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:15,368 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:15,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:15,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:15,578 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1718193653, now seen corresponding path program 2 times [2021-11-07 08:00:15,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:15,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185027535] [2021-11-07 08:00:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:15,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:15,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2021-11-07 08:00:15,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:15,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185027535] [2021-11-07 08:00:15,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185027535] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:15,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443701751] [2021-11-07 08:00:15,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:00:15,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:15,895 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:15,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-07 08:00:19,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:00:19,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:19,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 08:00:19,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:19,778 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 08:00:19,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 08:00:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-07 08:00:20,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443701751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:00:20,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:00:20,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2021-11-07 08:00:20,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740109869] [2021-11-07 08:00:20,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:00:20,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:00:20,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:00:20,827 INFO L87 Difference]: Start difference. First operand 190 states and 194 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 08:00:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:20,905 INFO L93 Difference]: Finished difference Result 194 states and 198 transitions. [2021-11-07 08:00:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:00:20,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2021-11-07 08:00:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:20,906 INFO L225 Difference]: With dead ends: 194 [2021-11-07 08:00:20,906 INFO L226 Difference]: Without dead ends: 194 [2021-11-07 08:00:20,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:00:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-07 08:00:20,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2021-11-07 08:00:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 180 states have (on average 1.0277777777777777) internal successors, (185), 180 states have internal predecessors, (185), 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) [2021-11-07 08:00:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2021-11-07 08:00:20,911 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 187 [2021-11-07 08:00:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:20,912 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2021-11-07 08:00:20,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 08:00:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2021-11-07 08:00:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-07 08:00:20,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:20,913 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:20,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-11-07 08:00:21,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:21,126 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 631090638, now seen corresponding path program 1 times [2021-11-07 08:00:21,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:21,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804101534] [2021-11-07 08:00:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:21,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:21,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:21,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-11-07 08:00:21,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:21,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804101534] [2021-11-07 08:00:21,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804101534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:21,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180435174] [2021-11-07 08:00:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:21,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:21,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:21,543 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:21,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-07 08:00:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:25,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:00:25,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-11-07 08:00:25,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180435174] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:25,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:25,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-11-07 08:00:25,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965387474] [2021-11-07 08:00:25,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:00:25,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:00:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:00:25,957 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:26,019 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2021-11-07 08:00:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:00:26,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 191 [2021-11-07 08:00:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:26,020 INFO L225 Difference]: With dead ends: 201 [2021-11-07 08:00:26,021 INFO L226 Difference]: Without dead ends: 201 [2021-11-07 08:00:26,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:00:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-07 08:00:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 197. [2021-11-07 08:00:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 185 states have (on average 1.027027027027027) internal successors, (190), 185 states have internal predecessors, (190), 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) [2021-11-07 08:00:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 201 transitions. [2021-11-07 08:00:26,025 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 201 transitions. Word has length 191 [2021-11-07 08:00:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:26,025 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 201 transitions. [2021-11-07 08:00:26,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 201 transitions. [2021-11-07 08:00:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-07 08:00:26,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:26,027 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:26,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-11-07 08:00:26,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:26,250 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:26,251 INFO L85 PathProgramCache]: Analyzing trace with hash 140209856, now seen corresponding path program 2 times [2021-11-07 08:00:26,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:26,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338789876] [2021-11-07 08:00:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:26,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-11-07 08:00:26,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:26,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338789876] [2021-11-07 08:00:26,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338789876] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:26,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375808449] [2021-11-07 08:00:26,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:00:26,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:26,528 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:26,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-07 08:00:30,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:00:30,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:30,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:00:30,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-11-07 08:00:30,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375808449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:30,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:30,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-11-07 08:00:30,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523635614] [2021-11-07 08:00:30,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:00:30,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:00:30,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:00:30,980 INFO L87 Difference]: Start difference. First operand 197 states and 201 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:31,045 INFO L93 Difference]: Finished difference Result 206 states and 210 transitions. [2021-11-07 08:00:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:00:31,045 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 196 [2021-11-07 08:00:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:31,046 INFO L225 Difference]: With dead ends: 206 [2021-11-07 08:00:31,046 INFO L226 Difference]: Without dead ends: 206 [2021-11-07 08:00:31,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:00:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-07 08:00:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 202. [2021-11-07 08:00:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 190 states have (on average 1.0263157894736843) internal successors, (195), 190 states have internal predecessors, (195), 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) [2021-11-07 08:00:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2021-11-07 08:00:31,050 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 196 [2021-11-07 08:00:31,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:31,051 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 206 transitions. [2021-11-07 08:00:31,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 9 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:31,051 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 206 transitions. [2021-11-07 08:00:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-07 08:00:31,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:31,053 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:00:31,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:31,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:31,266 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:31,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:31,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1825934066, now seen corresponding path program 3 times [2021-11-07 08:00:31,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:31,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177592209] [2021-11-07 08:00:31,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:31,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-11-07 08:00:31,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:31,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177592209] [2021-11-07 08:00:31,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177592209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:31,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054605956] [2021-11-07 08:00:31,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:00:31,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:31,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:31,546 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-07 08:00:35,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 08:00:35,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:35,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 08:00:35,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:35,586 INFO L354 Elim1Store]: treesize reduction 151, result has 18.4 percent of original size [2021-11-07 08:00:35,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 39 [2021-11-07 08:00:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2021-11-07 08:00:36,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054605956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:36,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:36,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 17 [2021-11-07 08:00:36,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607117794] [2021-11-07 08:00:36,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:00:36,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:00:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:00:36,793 INFO L87 Difference]: Start difference. First operand 202 states and 206 transitions. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 14 states have internal predecessors, (115), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-07 08:00:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:37,133 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2021-11-07 08:00:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 08:00:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 14 states have internal predecessors, (115), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 201 [2021-11-07 08:00:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:37,135 INFO L225 Difference]: With dead ends: 217 [2021-11-07 08:00:37,135 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 08:00:37,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=646, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:00:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 08:00:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2021-11-07 08:00:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 199 states have (on average 1.0251256281407035) internal successors, (204), 199 states have internal predecessors, (204), 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) [2021-11-07 08:00:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 215 transitions. [2021-11-07 08:00:37,141 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 215 transitions. Word has length 201 [2021-11-07 08:00:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:37,142 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 215 transitions. [2021-11-07 08:00:37,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 14 states have internal predecessors, (115), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-07 08:00:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 215 transitions. [2021-11-07 08:00:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 08:00:37,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:37,144 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 3, 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, 1, 1, 1, 1] [2021-11-07 08:00:37,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-11-07 08:00:37,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:37,354 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1262835517, now seen corresponding path program 4 times [2021-11-07 08:00:37,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:37,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228859275] [2021-11-07 08:00:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:37,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:37,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:37,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-11-07 08:00:37,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:37,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228859275] [2021-11-07 08:00:37,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228859275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:37,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526875513] [2021-11-07 08:00:37,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:00:37,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:37,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:37,686 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:37,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-07 08:00:41,877 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:00:41,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:00:41,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 08:00:41,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:00:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-11-07 08:00:42,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526875513] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:42,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:00:42,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-11-07 08:00:42,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422834511] [2021-11-07 08:00:42,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:00:42,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:00:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:00:42,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:00:42,312 INFO L87 Difference]: Start difference. First operand 211 states and 215 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 11 states have internal predecessors, (79), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:42,384 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2021-11-07 08:00:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:00:42,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 11 states have internal predecessors, (79), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 210 [2021-11-07 08:00:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:42,386 INFO L225 Difference]: With dead ends: 220 [2021-11-07 08:00:42,386 INFO L226 Difference]: Without dead ends: 220 [2021-11-07 08:00:42,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:00:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-07 08:00:42,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 216. [2021-11-07 08:00:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 204 states have (on average 1.0245098039215685) internal successors, (209), 204 states have internal predecessors, (209), 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) [2021-11-07 08:00:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2021-11-07 08:00:42,391 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 210 [2021-11-07 08:00:42,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:42,391 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 220 transitions. [2021-11-07 08:00:42,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 11 states have internal predecessors, (79), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 08:00:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 220 transitions. [2021-11-07 08:00:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 08:00:42,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:42,394 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 3, 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, 1, 1, 1, 1] [2021-11-07 08:00:42,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-07 08:00:42,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-07 08:00:42,606 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting mainErr1REQUIRES_VIOLATION === [getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION (and 13 more)] === [2021-11-07 08:00:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash 782339729, now seen corresponding path program 5 times [2021-11-07 08:00:42,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:42,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810796640] [2021-11-07 08:00:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:42,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-07 08:00:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:00:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:00:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-11-07 08:00:42,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:00:42,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810796640] [2021-11-07 08:00:42,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810796640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:00:42,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404879405] [2021-11-07 08:00:42,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:00:42,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:00:42,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:00:42,878 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:00:42,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbe979-a969-4c10-bd52-e2e3db24c619/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process