./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac64f5b077f8251002b0bb05f1aba070a52d8bbef53fa94e35704949c96b0f7c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:24:16,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:24:16,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:24:16,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:24:16,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:24:16,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:24:16,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:24:16,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:24:16,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:24:16,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:24:16,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:24:16,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:24:16,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:24:16,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:24:16,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:24:16,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:24:16,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:24:16,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:24:16,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:24:16,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:24:16,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:24:16,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:24:16,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:24:16,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:24:16,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:24:16,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:24:16,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:24:16,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:24:16,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:24:16,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:24:16,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:24:16,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:24:16,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:24:16,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:24:16,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:24:16,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:24:16,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:24:16,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:24:16,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:24:16,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:24:16,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:24:16,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 06:24:16,205 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:24:16,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:24:16,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:24:16,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:24:16,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:24:16,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:24:16,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:24:16,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:24:16,208 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:24:16,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:24:16,208 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:24:16,208 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:24:16,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:24:16,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:24:16,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:24:16,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:24:16,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:24:16,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:24:16,210 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 06:24:16,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:24:16,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:24:16,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:24:16,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:24:16,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:24:16,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:24:16,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:24:16,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:24:16,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:24:16,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:24:16,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:24:16,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:24:16,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:24:16,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:24:16,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:24:16,213 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_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac64f5b077f8251002b0bb05f1aba070a52d8bbef53fa94e35704949c96b0f7c [2021-11-20 06:24:16,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:24:16,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:24:16,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:24:16,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:24:16,528 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:24:16,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/bitvector/byte_add-2.i [2021-11-20 06:24:16,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/data/ca7f09d61/2628626760a84b6ea7ad567bf7ffc059/FLAGf4febddd2 [2021-11-20 06:24:17,089 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:24:17,089 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/sv-benchmarks/c/bitvector/byte_add-2.i [2021-11-20 06:24:17,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/data/ca7f09d61/2628626760a84b6ea7ad567bf7ffc059/FLAGf4febddd2 [2021-11-20 06:24:17,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/data/ca7f09d61/2628626760a84b6ea7ad567bf7ffc059 [2021-11-20 06:24:17,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:24:17,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:24:17,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:24:17,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:24:17,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:24:17,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c793d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17, skipping insertion in model container [2021-11-20 06:24:17,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:24:17,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:24:17,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/sv-benchmarks/c/bitvector/byte_add-2.i[1166,1179] [2021-11-20 06:24:17,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:24:17,808 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:24:17,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/sv-benchmarks/c/bitvector/byte_add-2.i[1166,1179] [2021-11-20 06:24:17,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:24:17,862 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:24:17,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17 WrapperNode [2021-11-20 06:24:17,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:24:17,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:24:17,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:24:17,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:24:17,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,916 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 162 [2021-11-20 06:24:17,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:24:17,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:24:17,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:24:17,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:24:17,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:24:17,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:24:17,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:24:17,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:24:17,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (1/1) ... [2021-11-20 06:24:17,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:24:17,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:18,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:24:18,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:24:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:24:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:24:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:24:18,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:24:18,133 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:24:18,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:24:18,489 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:24:18,496 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:24:18,497 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:24:18,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:18 BoogieIcfgContainer [2021-11-20 06:24:18,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:24:18,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:24:18,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:24:18,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:24:18,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:24:17" (1/3) ... [2021-11-20 06:24:18,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c615d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:24:18, skipping insertion in model container [2021-11-20 06:24:18,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:17" (2/3) ... [2021-11-20 06:24:18,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c615d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:24:18, skipping insertion in model container [2021-11-20 06:24:18,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:18" (3/3) ... [2021-11-20 06:24:18,523 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add-2.i [2021-11-20 06:24:18,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:24:18,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-20 06:24:18,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:24:18,590 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-20 06:24:18,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-20 06:24:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 75 states have (on average 1.9066666666666667) internal successors, (143), 113 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 06:24:18,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:18,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 06:24:18,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-20 06:24:18,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:18,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723622629] [2021-11-20 06:24:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:18,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:18,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:18,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723622629] [2021-11-20 06:24:18,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723622629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:18,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:18,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-20 06:24:18,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818723724] [2021-11-20 06:24:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:18,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:24:18,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:24:18,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:24:18,790 INFO L87 Difference]: Start difference. First operand has 114 states, 75 states have (on average 1.9066666666666667) internal successors, (143), 113 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:18,812 INFO L93 Difference]: Finished difference Result 135 states and 177 transitions. [2021-11-20 06:24:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:24:18,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-20 06:24:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:18,822 INFO L225 Difference]: With dead ends: 135 [2021-11-20 06:24:18,822 INFO L226 Difference]: Without dead ends: 69 [2021-11-20 06:24:18,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:24:18,829 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:18,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:24:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-20 06:24:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-20 06:24:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2021-11-20 06:24:18,868 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 4 [2021-11-20 06:24:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:18,868 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2021-11-20 06:24:18,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2021-11-20 06:24:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 06:24:18,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:18,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:18,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:24:18,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1944470950, now seen corresponding path program 1 times [2021-11-20 06:24:18,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:18,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780337486] [2021-11-20 06:24:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:18,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:19,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:19,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780337486] [2021-11-20 06:24:19,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780337486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:19,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:19,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:24:19,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814874916] [2021-11-20 06:24:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:24:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:24:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:24:19,018 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:19,173 INFO L93 Difference]: Finished difference Result 145 states and 212 transitions. [2021-11-20 06:24:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:24:19,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 06:24:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:19,175 INFO L225 Difference]: With dead ends: 145 [2021-11-20 06:24:19,176 INFO L226 Difference]: Without dead ends: 98 [2021-11-20 06:24:19,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:24:19,178 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:19,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 121 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:24:19,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-20 06:24:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-11-20 06:24:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2021-11-20 06:24:19,192 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 13 [2021-11-20 06:24:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:19,193 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2021-11-20 06:24:19,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2021-11-20 06:24:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 06:24:19,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:19,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:19,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:24:19,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash 565405448, now seen corresponding path program 1 times [2021-11-20 06:24:19,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:19,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399700037] [2021-11-20 06:24:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:19,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:24:19,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:19,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399700037] [2021-11-20 06:24:19,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399700037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:19,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:19,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:24:19,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81796593] [2021-11-20 06:24:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:19,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:19,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:24:19,335 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:19,581 INFO L93 Difference]: Finished difference Result 221 states and 296 transitions. [2021-11-20 06:24:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 06:24:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:19,584 INFO L225 Difference]: With dead ends: 221 [2021-11-20 06:24:19,584 INFO L226 Difference]: Without dead ends: 164 [2021-11-20 06:24:19,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:24:19,586 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 116 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:19,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 281 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:24:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-20 06:24:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 104. [2021-11-20 06:24:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 103 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2021-11-20 06:24:19,600 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 20 [2021-11-20 06:24:19,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:19,601 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2021-11-20 06:24:19,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2021-11-20 06:24:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 06:24:19,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:19,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:19,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:24:19,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1055427225, now seen corresponding path program 1 times [2021-11-20 06:24:19,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:19,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551926468] [2021-11-20 06:24:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:19,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:24:19,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:19,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551926468] [2021-11-20 06:24:19,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551926468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:19,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:19,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:24:19,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387038230] [2021-11-20 06:24:19,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:19,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:19,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:24:19,756 INFO L87 Difference]: Start difference. First operand 104 states and 135 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:19,950 INFO L93 Difference]: Finished difference Result 259 states and 340 transitions. [2021-11-20 06:24:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:19,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-20 06:24:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:19,956 INFO L225 Difference]: With dead ends: 259 [2021-11-20 06:24:19,956 INFO L226 Difference]: Without dead ends: 194 [2021-11-20 06:24:19,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:24:19,969 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 124 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:19,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 291 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:24:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-20 06:24:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 120. [2021-11-20 06:24:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 119 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-11-20 06:24:19,998 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 23 [2021-11-20 06:24:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:19,999 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-11-20 06:24:19,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:19,999 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-11-20 06:24:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 06:24:20,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:20,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:20,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:24:20,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2113419709, now seen corresponding path program 1 times [2021-11-20 06:24:20,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:20,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526761682] [2021-11-20 06:24:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:20,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:20,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:20,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526761682] [2021-11-20 06:24:20,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526761682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:20,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144667411] [2021-11-20 06:24:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:20,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:20,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:20,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:20,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:24:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:20,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:24:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:20,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:24:20,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144667411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:20,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:24:20,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-20 06:24:20,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861948508] [2021-11-20 06:24:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:20,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:20,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:20,459 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:20,687 INFO L93 Difference]: Finished difference Result 216 states and 307 transitions. [2021-11-20 06:24:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:20,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 06:24:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:20,689 INFO L225 Difference]: With dead ends: 216 [2021-11-20 06:24:20,690 INFO L226 Difference]: Without dead ends: 169 [2021-11-20 06:24:20,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:20,691 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 57 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:20,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 164 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:24:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-20 06:24:20,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 145. [2021-11-20 06:24:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.2708333333333333) internal successors, (183), 144 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2021-11-20 06:24:20,703 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 26 [2021-11-20 06:24:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:20,704 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2021-11-20 06:24:20,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2021-11-20 06:24:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 06:24:20,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:20,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:20,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:20,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:20,921 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1301565703, now seen corresponding path program 1 times [2021-11-20 06:24:20,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:20,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940334555] [2021-11-20 06:24:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:20,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:21,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:21,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940334555] [2021-11-20 06:24:21,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940334555] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:21,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60420941] [2021-11-20 06:24:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:21,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:21,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:21,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:21,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:24:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:21,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:24:21,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:24:21,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:24:21,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60420941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:21,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:24:21,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-20 06:24:21,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538623913] [2021-11-20 06:24:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:21,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:21,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:21,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:21,286 INFO L87 Difference]: Start difference. First operand 145 states and 183 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:21,392 INFO L93 Difference]: Finished difference Result 262 states and 343 transitions. [2021-11-20 06:24:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:21,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-20 06:24:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:21,395 INFO L225 Difference]: With dead ends: 262 [2021-11-20 06:24:21,395 INFO L226 Difference]: Without dead ends: 170 [2021-11-20 06:24:21,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:21,399 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:21,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 201 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2021-11-20 06:24:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-20 06:24:21,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 144. [2021-11-20 06:24:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.2727272727272727) internal successors, (182), 143 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 182 transitions. [2021-11-20 06:24:21,421 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 182 transitions. Word has length 33 [2021-11-20 06:24:21,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:21,422 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 182 transitions. [2021-11-20 06:24:21,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 182 transitions. [2021-11-20 06:24:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 06:24:21,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:21,431 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:21,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:21,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:21,657 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 115469453, now seen corresponding path program 1 times [2021-11-20 06:24:21,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:21,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524672600] [2021-11-20 06:24:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:21,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 06:24:21,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:21,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524672600] [2021-11-20 06:24:21,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524672600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:21,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:21,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:24:21,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551118084] [2021-11-20 06:24:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:21,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:24:21,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:24:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:24:21,758 INFO L87 Difference]: Start difference. First operand 144 states and 182 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:21,955 INFO L93 Difference]: Finished difference Result 354 states and 456 transitions. [2021-11-20 06:24:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:24:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-20 06:24:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:21,958 INFO L225 Difference]: With dead ends: 354 [2021-11-20 06:24:21,958 INFO L226 Difference]: Without dead ends: 263 [2021-11-20 06:24:21,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:24:21,963 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 169 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:21,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 162 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:24:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-20 06:24:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 166. [2021-11-20 06:24:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.284848484848485) internal successors, (212), 165 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 212 transitions. [2021-11-20 06:24:21,979 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 212 transitions. Word has length 39 [2021-11-20 06:24:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:21,980 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 212 transitions. [2021-11-20 06:24:21,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 212 transitions. [2021-11-20 06:24:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:24:21,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:21,983 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-20 06:24:21,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:24:21,983 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1345550587, now seen corresponding path program 1 times [2021-11-20 06:24:21,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:21,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545956788] [2021-11-20 06:24:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:21,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:24:22,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:22,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545956788] [2021-11-20 06:24:22,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545956788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:22,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:22,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:24:22,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245995742] [2021-11-20 06:24:22,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:22,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:24:22,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:24:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:24:22,062 INFO L87 Difference]: Start difference. First operand 166 states and 212 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:22,157 INFO L93 Difference]: Finished difference Result 309 states and 407 transitions. [2021-11-20 06:24:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:24:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 06:24:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:22,162 INFO L225 Difference]: With dead ends: 309 [2021-11-20 06:24:22,162 INFO L226 Difference]: Without dead ends: 196 [2021-11-20 06:24:22,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:24:22,164 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 41 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:22,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 109 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:24:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-20 06:24:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 180. [2021-11-20 06:24:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.324022346368715) internal successors, (237), 179 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 237 transitions. [2021-11-20 06:24:22,173 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 237 transitions. Word has length 40 [2021-11-20 06:24:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:22,174 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 237 transitions. [2021-11-20 06:24:22,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 237 transitions. [2021-11-20 06:24:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:24:22,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:22,175 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2021-11-20 06:24:22,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:24:22,176 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash -665492217, now seen corresponding path program 1 times [2021-11-20 06:24:22,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:22,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886506780] [2021-11-20 06:24:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:22,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:22,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:22,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886506780] [2021-11-20 06:24:22,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886506780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:22,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430154224] [2021-11-20 06:24:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:22,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:22,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:22,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:22,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:24:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:22,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:24:22,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 06:24:22,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:24:22,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430154224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:22,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:24:22,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2021-11-20 06:24:22,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712013199] [2021-11-20 06:24:22,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:22,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:22,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:22,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:22,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:24:22,508 INFO L87 Difference]: Start difference. First operand 180 states and 237 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:22,588 INFO L93 Difference]: Finished difference Result 316 states and 419 transitions. [2021-11-20 06:24:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:22,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 06:24:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:22,591 INFO L225 Difference]: With dead ends: 316 [2021-11-20 06:24:22,591 INFO L226 Difference]: Without dead ends: 189 [2021-11-20 06:24:22,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:24:22,592 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 16 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:22,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 201 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2021-11-20 06:24:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-20 06:24:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2021-11-20 06:24:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.2752808988764044) internal successors, (227), 178 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 227 transitions. [2021-11-20 06:24:22,600 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 227 transitions. Word has length 40 [2021-11-20 06:24:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:22,600 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 227 transitions. [2021-11-20 06:24:22,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 227 transitions. [2021-11-20 06:24:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:24:22,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:22,606 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2021-11-20 06:24:22,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:22,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:22,825 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1738577597, now seen corresponding path program 1 times [2021-11-20 06:24:22,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531595533] [2021-11-20 06:24:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:22,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:24:22,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:22,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531595533] [2021-11-20 06:24:22,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531595533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:22,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:22,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:24:22,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494107837] [2021-11-20 06:24:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:22,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:24:22,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:24:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:24:22,881 INFO L87 Difference]: Start difference. First operand 179 states and 227 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:22,889 INFO L93 Difference]: Finished difference Result 205 states and 257 transitions. [2021-11-20 06:24:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:24:22,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 06:24:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:22,891 INFO L225 Difference]: With dead ends: 205 [2021-11-20 06:24:22,891 INFO L226 Difference]: Without dead ends: 179 [2021-11-20 06:24:22,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:24:22,893 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 8 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:22,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 197 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:24:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-20 06:24:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-20 06:24:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.2696629213483146) internal successors, (226), 178 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 226 transitions. [2021-11-20 06:24:22,902 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 226 transitions. Word has length 40 [2021-11-20 06:24:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:22,903 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 226 transitions. [2021-11-20 06:24:22,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 226 transitions. [2021-11-20 06:24:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 06:24:22,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:22,904 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:22,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:24:22,905 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1058519227, now seen corresponding path program 2 times [2021-11-20 06:24:22,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:22,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929621614] [2021-11-20 06:24:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:22,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 06:24:23,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:23,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929621614] [2021-11-20 06:24:23,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929621614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:23,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:23,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:24:23,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018193069] [2021-11-20 06:24:23,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:23,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:24:23,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:23,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:24:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:23,011 INFO L87 Difference]: Start difference. First operand 179 states and 226 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:23,207 INFO L93 Difference]: Finished difference Result 342 states and 440 transitions. [2021-11-20 06:24:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:24:23,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-20 06:24:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:23,209 INFO L225 Difference]: With dead ends: 342 [2021-11-20 06:24:23,209 INFO L226 Difference]: Without dead ends: 194 [2021-11-20 06:24:23,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:23,210 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 107 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:23,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 182 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:24:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-20 06:24:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 172. [2021-11-20 06:24:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.2514619883040936) internal successors, (214), 171 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 214 transitions. [2021-11-20 06:24:23,219 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 214 transitions. Word has length 40 [2021-11-20 06:24:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:23,219 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 214 transitions. [2021-11-20 06:24:23,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 214 transitions. [2021-11-20 06:24:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:24:23,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:23,221 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:23,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:24:23,221 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1730338002, now seen corresponding path program 1 times [2021-11-20 06:24:23,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:23,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109881749] [2021-11-20 06:24:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:23,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:23,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:23,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109881749] [2021-11-20 06:24:23,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109881749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:23,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:23,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:24:23,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045214443] [2021-11-20 06:24:23,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:23,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:23,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:23,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:23,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:24:23,288 INFO L87 Difference]: Start difference. First operand 172 states and 214 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:23,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:23,343 INFO L93 Difference]: Finished difference Result 349 states and 438 transitions. [2021-11-20 06:24:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:23,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-20 06:24:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:23,346 INFO L225 Difference]: With dead ends: 349 [2021-11-20 06:24:23,346 INFO L226 Difference]: Without dead ends: 228 [2021-11-20 06:24:23,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:24:23,347 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 48 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:23,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 282 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:24:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-20 06:24:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 184. [2021-11-20 06:24:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.284153005464481) internal successors, (235), 183 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2021-11-20 06:24:23,355 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 42 [2021-11-20 06:24:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:23,355 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2021-11-20 06:24:23,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2021-11-20 06:24:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 06:24:23,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:23,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:23,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:24:23,357 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash 719220752, now seen corresponding path program 1 times [2021-11-20 06:24:23,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:23,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487016678] [2021-11-20 06:24:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:23,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:23,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:23,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487016678] [2021-11-20 06:24:23,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487016678] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:23,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872842592] [2021-11-20 06:24:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:23,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:23,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:23,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:24:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:24:23,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:24:23,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:24,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872842592] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:24:24,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:24:24,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 11 [2021-11-20 06:24:24,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668951317] [2021-11-20 06:24:24,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:24:24,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:24:24,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:24:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:24:24,050 INFO L87 Difference]: Start difference. First operand 184 states and 235 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:24,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:24,503 INFO L93 Difference]: Finished difference Result 701 states and 929 transitions. [2021-11-20 06:24:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:24:24,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-20 06:24:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:24,507 INFO L225 Difference]: With dead ends: 701 [2021-11-20 06:24:24,507 INFO L226 Difference]: Without dead ends: 556 [2021-11-20 06:24:24,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:24:24,509 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 445 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:24,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 350 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:24:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-20 06:24:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 463. [2021-11-20 06:24:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.3181818181818181) internal successors, (609), 462 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 609 transitions. [2021-11-20 06:24:24,526 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 609 transitions. Word has length 42 [2021-11-20 06:24:24,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:24,528 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 609 transitions. [2021-11-20 06:24:24,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 609 transitions. [2021-11-20 06:24:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 06:24:24,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:24,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:24,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:24,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 06:24:24,745 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1729147787, now seen corresponding path program 1 times [2021-11-20 06:24:24,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:24,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504472379] [2021-11-20 06:24:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:24,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:24,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:24,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504472379] [2021-11-20 06:24:24,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504472379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:24,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226594605] [2021-11-20 06:24:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:24,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:24,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:24,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:24,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:24:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:24,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:24:24,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:24:25,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:25,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226594605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:24:25,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:24:25,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 11 [2021-11-20 06:24:25,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780327266] [2021-11-20 06:24:25,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:24:25,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 06:24:25,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 06:24:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:24:25,419 INFO L87 Difference]: Start difference. First operand 463 states and 609 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:25,879 INFO L93 Difference]: Finished difference Result 2174 states and 2955 transitions. [2021-11-20 06:24:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:24:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-20 06:24:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:25,889 INFO L225 Difference]: With dead ends: 2174 [2021-11-20 06:24:25,889 INFO L226 Difference]: Without dead ends: 1732 [2021-11-20 06:24:25,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:24:25,891 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 506 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:25,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 432 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:24:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2021-11-20 06:24:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1486. [2021-11-20 06:24:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 1.3292929292929292) internal successors, (1974), 1485 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1974 transitions. [2021-11-20 06:24:25,941 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1974 transitions. Word has length 45 [2021-11-20 06:24:25,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:25,942 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 1974 transitions. [2021-11-20 06:24:25,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:25,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1974 transitions. [2021-11-20 06:24:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 06:24:25,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:25,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:25,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:26,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 06:24:26,157 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1247131846, now seen corresponding path program 1 times [2021-11-20 06:24:26,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:26,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193003683] [2021-11-20 06:24:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:26,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:24:26,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:26,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193003683] [2021-11-20 06:24:26,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193003683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:26,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781576667] [2021-11-20 06:24:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:26,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:26,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:26,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:26,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:24:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:26,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:24:26,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:24:26,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:24:26,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781576667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:26,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:24:26,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-20 06:24:26,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301839026] [2021-11-20 06:24:26,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:26,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:26,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:26,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:26,504 INFO L87 Difference]: Start difference. First operand 1486 states and 1974 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:26,592 INFO L93 Difference]: Finished difference Result 3604 states and 4867 transitions. [2021-11-20 06:24:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:26,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-20 06:24:26,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:26,604 INFO L225 Difference]: With dead ends: 3604 [2021-11-20 06:24:26,604 INFO L226 Difference]: Without dead ends: 2195 [2021-11-20 06:24:26,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:26,607 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 44 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:26,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 193 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 92 Unchecked, 0.1s Time] [2021-11-20 06:24:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-11-20 06:24:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1788. [2021-11-20 06:24:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 1.3670956911024064) internal successors, (2443), 1787 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2443 transitions. [2021-11-20 06:24:26,668 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2443 transitions. Word has length 51 [2021-11-20 06:24:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:26,669 INFO L470 AbstractCegarLoop]: Abstraction has 1788 states and 2443 transitions. [2021-11-20 06:24:26,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2443 transitions. [2021-11-20 06:24:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-20 06:24:26,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:26,673 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:26,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:26,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 06:24:26,901 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash -92606738, now seen corresponding path program 1 times [2021-11-20 06:24:26,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:26,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811121929] [2021-11-20 06:24:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:26,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:24:27,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:27,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811121929] [2021-11-20 06:24:27,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811121929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:27,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267021043] [2021-11-20 06:24:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:27,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:27,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:27,033 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:27,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:24:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:27,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:24:27,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:24:27,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:24:27,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267021043] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:24:27,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:24:27,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-11-20 06:24:27,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256972183] [2021-11-20 06:24:27,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:24:27,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:24:27,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:24:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:24:27,722 INFO L87 Difference]: Start difference. First operand 1788 states and 2443 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:28,585 INFO L93 Difference]: Finished difference Result 5279 states and 6915 transitions. [2021-11-20 06:24:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:24:28,586 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-20 06:24:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:28,602 INFO L225 Difference]: With dead ends: 5279 [2021-11-20 06:24:28,602 INFO L226 Difference]: Without dead ends: 3416 [2021-11-20 06:24:28,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2021-11-20 06:24:28,606 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 513 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:28,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 361 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:24:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2021-11-20 06:24:28,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 2064. [2021-11-20 06:24:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 1.3082888996606883) internal successors, (2699), 2063 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2699 transitions. [2021-11-20 06:24:28,706 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2699 transitions. Word has length 61 [2021-11-20 06:24:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:28,706 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 2699 transitions. [2021-11-20 06:24:28,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2699 transitions. [2021-11-20 06:24:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 06:24:28,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:28,709 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:28,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:28,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:28,933 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:28,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1962291400, now seen corresponding path program 1 times [2021-11-20 06:24:28,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:28,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911170875] [2021-11-20 06:24:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:28,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 06:24:29,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:29,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911170875] [2021-11-20 06:24:29,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911170875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:29,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:29,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:24:29,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362795961] [2021-11-20 06:24:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:29,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:24:29,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:24:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:29,006 INFO L87 Difference]: Start difference. First operand 2064 states and 2699 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:29,272 INFO L93 Difference]: Finished difference Result 3810 states and 4937 transitions. [2021-11-20 06:24:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:24:29,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 06:24:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:29,285 INFO L225 Difference]: With dead ends: 3810 [2021-11-20 06:24:29,286 INFO L226 Difference]: Without dead ends: 2525 [2021-11-20 06:24:29,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:24:29,288 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 153 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:29,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 237 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:24:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2021-11-20 06:24:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2256. [2021-11-20 06:24:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.2851441241685144) internal successors, (2898), 2255 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2898 transitions. [2021-11-20 06:24:29,358 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2898 transitions. Word has length 77 [2021-11-20 06:24:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:29,359 INFO L470 AbstractCegarLoop]: Abstraction has 2256 states and 2898 transitions. [2021-11-20 06:24:29,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2898 transitions. [2021-11-20 06:24:29,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 06:24:29,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:29,362 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:29,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:24:29,362 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1205525676, now seen corresponding path program 1 times [2021-11-20 06:24:29,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902913977] [2021-11-20 06:24:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:29,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 06:24:29,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902913977] [2021-11-20 06:24:29,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902913977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971794266] [2021-11-20 06:24:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:29,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:29,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:29,412 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:29,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:24:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:29,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:24:29,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:24:29,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:24:29,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971794266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:29,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:24:29,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-20 06:24:29,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563402751] [2021-11-20 06:24:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:29,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:24:29,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:24:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:24:29,689 INFO L87 Difference]: Start difference. First operand 2256 states and 2898 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:29,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:29,814 INFO L93 Difference]: Finished difference Result 4464 states and 5696 transitions. [2021-11-20 06:24:29,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:24:29,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 06:24:29,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:29,832 INFO L225 Difference]: With dead ends: 4464 [2021-11-20 06:24:29,832 INFO L226 Difference]: Without dead ends: 3179 [2021-11-20 06:24:29,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:24:29,835 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 80 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:29,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 146 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:24:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-11-20 06:24:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2554. [2021-11-20 06:24:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2553 states have (on average 1.2773207990599296) internal successors, (3261), 2553 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3261 transitions. [2021-11-20 06:24:29,933 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3261 transitions. Word has length 77 [2021-11-20 06:24:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:29,934 INFO L470 AbstractCegarLoop]: Abstraction has 2554 states and 3261 transitions. [2021-11-20 06:24:29,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3261 transitions. [2021-11-20 06:24:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-20 06:24:29,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:29,937 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:29,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:30,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 06:24:30,165 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1920563824, now seen corresponding path program 1 times [2021-11-20 06:24:30,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:30,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784467223] [2021-11-20 06:24:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:30,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 06:24:30,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:30,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784467223] [2021-11-20 06:24:30,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784467223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:30,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:30,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:24:30,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307897205] [2021-11-20 06:24:30,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:30,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:24:30,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:24:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:30,240 INFO L87 Difference]: Start difference. First operand 2554 states and 3261 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:30,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:30,494 INFO L93 Difference]: Finished difference Result 4809 states and 6085 transitions. [2021-11-20 06:24:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:24:30,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-20 06:24:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:30,513 INFO L225 Difference]: With dead ends: 4809 [2021-11-20 06:24:30,513 INFO L226 Difference]: Without dead ends: 3236 [2021-11-20 06:24:30,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:24:30,517 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 204 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:30,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 207 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:24:30,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-11-20 06:24:30,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2498. [2021-11-20 06:24:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2497 states have (on average 1.2711253504205047) internal successors, (3174), 2497 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3174 transitions. [2021-11-20 06:24:30,635 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3174 transitions. Word has length 77 [2021-11-20 06:24:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:30,635 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 3174 transitions. [2021-11-20 06:24:30,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3174 transitions. [2021-11-20 06:24:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:24:30,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:30,639 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:30,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:24:30,639 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash -885897394, now seen corresponding path program 1 times [2021-11-20 06:24:30,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:30,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067741125] [2021-11-20 06:24:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:30,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-20 06:24:30,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:30,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067741125] [2021-11-20 06:24:30,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067741125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:30,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:30,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:24:30,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259048416] [2021-11-20 06:24:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:30,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:24:30,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:24:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:24:30,740 INFO L87 Difference]: Start difference. First operand 2498 states and 3174 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:31,106 INFO L93 Difference]: Finished difference Result 4316 states and 5467 transitions. [2021-11-20 06:24:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:24:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 06:24:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:31,124 INFO L225 Difference]: With dead ends: 4316 [2021-11-20 06:24:31,124 INFO L226 Difference]: Without dead ends: 3212 [2021-11-20 06:24:31,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:24:31,127 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 225 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:31,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 229 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:24:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2021-11-20 06:24:31,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2832. [2021-11-20 06:24:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 1.269516072059343) internal successors, (3594), 2831 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3594 transitions. [2021-11-20 06:24:31,227 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3594 transitions. Word has length 80 [2021-11-20 06:24:31,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:31,228 INFO L470 AbstractCegarLoop]: Abstraction has 2832 states and 3594 transitions. [2021-11-20 06:24:31,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3594 transitions. [2021-11-20 06:24:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:24:31,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:31,232 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:31,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:24:31,232 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1379659112, now seen corresponding path program 1 times [2021-11-20 06:24:31,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:31,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125722744] [2021-11-20 06:24:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:31,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:24:31,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:31,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125722744] [2021-11-20 06:24:31,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125722744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:31,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109127103] [2021-11-20 06:24:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:31,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:31,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:31,285 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:31,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:24:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:31,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:24:31,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 06:24:31,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:24:31,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109127103] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:24:31,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:24:31,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2021-11-20 06:24:31,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938909205] [2021-11-20 06:24:31,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:24:31,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:24:31,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:24:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:24:31,774 INFO L87 Difference]: Start difference. First operand 2832 states and 3594 transitions. Second operand has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:33,323 INFO L93 Difference]: Finished difference Result 13102 states and 15727 transitions. [2021-11-20 06:24:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:24:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 06:24:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:33,376 INFO L225 Difference]: With dead ends: 13102 [2021-11-20 06:24:33,376 INFO L226 Difference]: Without dead ends: 13077 [2021-11-20 06:24:33,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=378, Invalid=1514, Unknown=0, NotChecked=0, Total=1892 [2021-11-20 06:24:33,381 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 483 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:33,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 860 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 06:24:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13077 states. [2021-11-20 06:24:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13077 to 4142. [2021-11-20 06:24:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 4141 states have (on average 1.3226273846896885) internal successors, (5477), 4141 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 5477 transitions. [2021-11-20 06:24:33,589 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 5477 transitions. Word has length 80 [2021-11-20 06:24:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:33,590 INFO L470 AbstractCegarLoop]: Abstraction has 4142 states and 5477 transitions. [2021-11-20 06:24:33,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 5477 transitions. [2021-11-20 06:24:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 06:24:33,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:33,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:33,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:33,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:33,813 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:33,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash 861351131, now seen corresponding path program 1 times [2021-11-20 06:24:33,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:33,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706097306] [2021-11-20 06:24:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:33,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:24:33,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:33,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706097306] [2021-11-20 06:24:33,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706097306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:33,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:33,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:24:33,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109745268] [2021-11-20 06:24:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:33,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:24:33,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:24:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:24:33,900 INFO L87 Difference]: Start difference. First operand 4142 states and 5477 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:34,284 INFO L93 Difference]: Finished difference Result 8215 states and 10787 transitions. [2021-11-20 06:24:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:24:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-20 06:24:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:34,298 INFO L225 Difference]: With dead ends: 8215 [2021-11-20 06:24:34,298 INFO L226 Difference]: Without dead ends: 5466 [2021-11-20 06:24:34,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:24:34,304 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 306 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:34,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 200 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:24:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2021-11-20 06:24:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 5071. [2021-11-20 06:24:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5071 states, 5070 states have (on average 1.3124260355029587) internal successors, (6654), 5070 states have internal predecessors, (6654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5071 states to 5071 states and 6654 transitions. [2021-11-20 06:24:34,481 INFO L78 Accepts]: Start accepts. Automaton has 5071 states and 6654 transitions. Word has length 80 [2021-11-20 06:24:34,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:34,481 INFO L470 AbstractCegarLoop]: Abstraction has 5071 states and 6654 transitions. [2021-11-20 06:24:34,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5071 states and 6654 transitions. [2021-11-20 06:24:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 06:24:34,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:34,487 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:34,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 06:24:34,488 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:34,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1618881827, now seen corresponding path program 1 times [2021-11-20 06:24:34,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:34,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524591122] [2021-11-20 06:24:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:34,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-20 06:24:34,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:34,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524591122] [2021-11-20 06:24:34,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524591122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:34,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:34,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:24:34,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184638237] [2021-11-20 06:24:34,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:34,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:24:34,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:24:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:34,659 INFO L87 Difference]: Start difference. First operand 5071 states and 6654 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:35,107 INFO L93 Difference]: Finished difference Result 10705 states and 13965 transitions. [2021-11-20 06:24:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:24:35,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-20 06:24:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:35,129 INFO L225 Difference]: With dead ends: 10705 [2021-11-20 06:24:35,129 INFO L226 Difference]: Without dead ends: 10296 [2021-11-20 06:24:35,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:24:35,133 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 347 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:35,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 691 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:24:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2021-11-20 06:24:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 5090. [2021-11-20 06:24:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 5089 states have (on average 1.311849086264492) internal successors, (6676), 5089 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 6676 transitions. [2021-11-20 06:24:35,363 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 6676 transitions. Word has length 83 [2021-11-20 06:24:35,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:35,364 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 6676 transitions. [2021-11-20 06:24:35,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 6676 transitions. [2021-11-20 06:24:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 06:24:35,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:35,370 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:35,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 06:24:35,371 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:35,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash -705708941, now seen corresponding path program 1 times [2021-11-20 06:24:35,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:35,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962650460] [2021-11-20 06:24:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:35,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-20 06:24:35,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:35,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962650460] [2021-11-20 06:24:35,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962650460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:35,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:35,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:24:35,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610607065] [2021-11-20 06:24:35,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:35,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:24:35,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:35,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:24:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:24:35,495 INFO L87 Difference]: Start difference. First operand 5090 states and 6676 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:36,010 INFO L93 Difference]: Finished difference Result 10631 states and 13863 transitions. [2021-11-20 06:24:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:24:36,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-20 06:24:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:36,030 INFO L225 Difference]: With dead ends: 10631 [2021-11-20 06:24:36,031 INFO L226 Difference]: Without dead ends: 10197 [2021-11-20 06:24:36,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:24:36,034 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 289 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:36,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 575 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:24:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2021-11-20 06:24:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 5123. [2021-11-20 06:24:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.3100351425224521) internal successors, (6710), 5122 states have internal predecessors, (6710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 6710 transitions. [2021-11-20 06:24:36,222 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 6710 transitions. Word has length 83 [2021-11-20 06:24:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:36,222 INFO L470 AbstractCegarLoop]: Abstraction has 5123 states and 6710 transitions. [2021-11-20 06:24:36,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 6710 transitions. [2021-11-20 06:24:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 06:24:36,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:36,226 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:36,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 06:24:36,227 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1670983295, now seen corresponding path program 1 times [2021-11-20 06:24:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681570894] [2021-11-20 06:24:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:36,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-20 06:24:36,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:36,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681570894] [2021-11-20 06:24:36,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681570894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:36,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:36,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:24:36,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326921526] [2021-11-20 06:24:36,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:36,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:24:36,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:36,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:24:36,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:24:36,349 INFO L87 Difference]: Start difference. First operand 5123 states and 6710 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:37,006 INFO L93 Difference]: Finished difference Result 10786 states and 14047 transitions. [2021-11-20 06:24:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:24:37,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-20 06:24:37,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:37,028 INFO L225 Difference]: With dead ends: 10786 [2021-11-20 06:24:37,028 INFO L226 Difference]: Without dead ends: 10377 [2021-11-20 06:24:37,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:24:37,033 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 461 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:37,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1016 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:24:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10377 states. [2021-11-20 06:24:37,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10377 to 5097. [2021-11-20 06:24:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 5096 states have (on average 1.310243328100471) internal successors, (6677), 5096 states have internal predecessors, (6677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 6677 transitions. [2021-11-20 06:24:37,262 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 6677 transitions. Word has length 85 [2021-11-20 06:24:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:37,263 INFO L470 AbstractCegarLoop]: Abstraction has 5097 states and 6677 transitions. [2021-11-20 06:24:37,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 6677 transitions. [2021-11-20 06:24:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-20 06:24:37,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:37,267 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:37,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 06:24:37,268 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1447135889, now seen corresponding path program 1 times [2021-11-20 06:24:37,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288647002] [2021-11-20 06:24:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:37,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-20 06:24:37,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:37,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288647002] [2021-11-20 06:24:37,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288647002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:37,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:37,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:24:37,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65203165] [2021-11-20 06:24:37,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:37,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:24:37,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:24:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:24:37,399 INFO L87 Difference]: Start difference. First operand 5097 states and 6677 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:38,113 INFO L93 Difference]: Finished difference Result 10565 states and 13784 transitions. [2021-11-20 06:24:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:24:38,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-20 06:24:38,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:38,137 INFO L225 Difference]: With dead ends: 10565 [2021-11-20 06:24:38,137 INFO L226 Difference]: Without dead ends: 10131 [2021-11-20 06:24:38,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:24:38,142 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 375 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:38,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 845 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:24:38,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10131 states. [2021-11-20 06:24:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10131 to 5067. [2021-11-20 06:24:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 5066 states have (on average 1.311488353730754) internal successors, (6644), 5066 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 6644 transitions. [2021-11-20 06:24:38,361 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 6644 transitions. Word has length 85 [2021-11-20 06:24:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:38,361 INFO L470 AbstractCegarLoop]: Abstraction has 5067 states and 6644 transitions. [2021-11-20 06:24:38,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 6644 transitions. [2021-11-20 06:24:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:24:38,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:38,367 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:24:38,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 06:24:38,367 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:24:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1246814763, now seen corresponding path program 1 times [2021-11-20 06:24:38,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:38,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612761751] [2021-11-20 06:24:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:38,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 06:24:38,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:38,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612761751] [2021-11-20 06:24:38,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612761751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:24:38,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760169514] [2021-11-20 06:24:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:38,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:24:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:38,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:24:38,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 06:24:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:24:38,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 06:24:58,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 06:24:58,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760169514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:24:58,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:24:58,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2021-11-20 06:24:58,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080133214] [2021-11-20 06:24:58,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:24:58,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:24:58,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:24:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=146, Unknown=2, NotChecked=0, Total=210 [2021-11-20 06:24:58,692 INFO L87 Difference]: Start difference. First operand 5067 states and 6644 transitions. Second operand has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:24:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:59,800 INFO L93 Difference]: Finished difference Result 8414 states and 10842 transitions. [2021-11-20 06:24:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:24:59,801 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-20 06:24:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:59,812 INFO L225 Difference]: With dead ends: 8414 [2021-11-20 06:24:59,812 INFO L226 Difference]: Without dead ends: 7589 [2021-11-20 06:24:59,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 168 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=108, Invalid=270, Unknown=2, NotChecked=0, Total=380 [2021-11-20 06:24:59,816 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 766 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:59,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 706 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 432 Invalid, 0 Unknown, 22 Unchecked, 0.7s Time] [2021-11-20 06:24:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2021-11-20 06:25:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 5152. [2021-11-20 06:25:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5151 states have (on average 1.3075131042516017) internal successors, (6735), 5151 states have internal predecessors, (6735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:25:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 6735 transitions. [2021-11-20 06:25:00,015 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 6735 transitions. Word has length 89 [2021-11-20 06:25:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:25:00,016 INFO L470 AbstractCegarLoop]: Abstraction has 5152 states and 6735 transitions. [2021-11-20 06:25:00,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:25:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 6735 transitions. [2021-11-20 06:25:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-20 06:25:00,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:25:00,020 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:25:00,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:25:00,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-20 06:25:00,226 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:25:00,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:25:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1767062975, now seen corresponding path program 1 times [2021-11-20 06:25:00,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:25:00,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422789116] [2021-11-20 06:25:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:25:00,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:25:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:25:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 06:25:00,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:25:00,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422789116] [2021-11-20 06:25:00,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422789116] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:25:00,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888380260] [2021-11-20 06:25:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:25:00,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:25:00,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:25:00,421 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:25:00,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 06:25:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:25:00,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:25:00,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:25:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 06:25:02,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:25:02,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888380260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:25:02,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:25:02,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2021-11-20 06:25:02,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179407107] [2021-11-20 06:25:02,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:25:02,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:25:02,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:25:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:25:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:25:02,024 INFO L87 Difference]: Start difference. First operand 5152 states and 6735 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:25:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:25:02,674 INFO L93 Difference]: Finished difference Result 10672 states and 13902 transitions. [2021-11-20 06:25:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:25:02,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-20 06:25:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:25:02,688 INFO L225 Difference]: With dead ends: 10672 [2021-11-20 06:25:02,688 INFO L226 Difference]: Without dead ends: 7998 [2021-11-20 06:25:02,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:25:02,693 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 166 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:25:02,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 596 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 06:25:02,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7998 states. [2021-11-20 06:25:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7998 to 5160. [2021-11-20 06:25:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5160 states, 5159 states have (on average 1.3070362473347548) internal successors, (6743), 5159 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:25:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 6743 transitions. [2021-11-20 06:25:02,952 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 6743 transitions. Word has length 89 [2021-11-20 06:25:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:25:02,952 INFO L470 AbstractCegarLoop]: Abstraction has 5160 states and 6743 transitions. [2021-11-20 06:25:02,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:25:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 6743 transitions. [2021-11-20 06:25:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 06:25:02,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:25:02,957 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:25:02,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:25:03,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 06:25:03,162 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-11-20 06:25:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:25:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1585272271, now seen corresponding path program 1 times [2021-11-20 06:25:03,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:25:03,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406348114] [2021-11-20 06:25:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:25:03,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:25:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:25:03,222 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:25:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:25:03,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:25:03,289 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:25:03,290 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2021-11-20 06:25:03,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2021-11-20 06:25:03,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2021-11-20 06:25:03,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2021-11-20 06:25:03,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2021-11-20 06:25:03,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2021-11-20 06:25:03,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2021-11-20 06:25:03,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2021-11-20 06:25:03,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2021-11-20 06:25:03,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2021-11-20 06:25:03,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2021-11-20 06:25:03,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2021-11-20 06:25:03,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2021-11-20 06:25:03,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2021-11-20 06:25:03,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2021-11-20 06:25:03,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2021-11-20 06:25:03,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2021-11-20 06:25:03,295 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2021-11-20 06:25:03,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2021-11-20 06:25:03,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2021-11-20 06:25:03,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 38 remaining) [2021-11-20 06:25:03,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 38 remaining) [2021-11-20 06:25:03,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2021-11-20 06:25:03,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2021-11-20 06:25:03,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2021-11-20 06:25:03,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2021-11-20 06:25:03,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2021-11-20 06:25:03,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2021-11-20 06:25:03,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2021-11-20 06:25:03,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2021-11-20 06:25:03,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2021-11-20 06:25:03,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2021-11-20 06:25:03,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2021-11-20 06:25:03,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2021-11-20 06:25:03,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2021-11-20 06:25:03,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2021-11-20 06:25:03,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2021-11-20 06:25:03,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2021-11-20 06:25:03,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 06:25:03,303 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:25:03,306 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:25:03,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:25:03 BoogieIcfgContainer [2021-11-20 06:25:03,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:25:03,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:25:03,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:25:03,424 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:25:03,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:18" (3/4) ... [2021-11-20 06:25:03,428 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:25:03,428 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:25:03,430 INFO L158 Benchmark]: Toolchain (without parser) took 45954.55ms. Allocated memory was 109.1MB in the beginning and 352.3MB in the end (delta: 243.3MB). Free memory was 68.7MB in the beginning and 253.4MB in the end (delta: -184.7MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2021-11-20 06:25:03,430 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:25:03,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.28ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 83.4MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:25:03,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.84ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:25:03,434 INFO L158 Benchmark]: Boogie Preprocessor took 39.34ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:25:03,435 INFO L158 Benchmark]: RCFGBuilder took 542.00ms. Allocated memory is still 109.1MB. Free memory was 80.1MB in the beginning and 65.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:25:03,435 INFO L158 Benchmark]: TraceAbstraction took 44922.94ms. Allocated memory was 109.1MB in the beginning and 352.3MB in the end (delta: 243.3MB). Free memory was 65.0MB in the beginning and 253.4MB in the end (delta: -188.5MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. [2021-11-20 06:25:03,435 INFO L158 Benchmark]: Witness Printer took 5.18ms. Allocated memory is still 352.3MB. Free memory is still 253.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:25:03,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.28ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 83.4MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.84ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.34ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 542.00ms. Allocated memory is still 109.1MB. Free memory was 80.1MB in the beginning and 65.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 44922.94ms. Allocated memory was 109.1MB in the beginning and 352.3MB in the end (delta: 243.3MB). Free memory was 65.0MB in the beginning and 253.4MB in the end (delta: -188.5MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. * Witness Printer took 5.18ms. Allocated memory is still 352.3MB. Free memory is still 253.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 96. Possible FailurePath: [L124] unsigned int a, b, r; [L126] a = __VERIFIER_nondet_uint() [L127] b = __VERIFIER_nondet_uint() [L129] CALL mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=4] [L59] COND TRUE a3 == (unsigned char)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=4] [L60] EXPR na - 1 [L60] na = na - 1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=3] [L61] COND TRUE a2 == (unsigned char)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=3] [L62] EXPR na - 1 [L62] na = na - 1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=2] [L63] COND TRUE a1 == (unsigned char)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=2] [L64] EXPR na - 1 [L64] na = na - 1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=1] [L68] nb = (unsigned char)4 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=1, nb=4] [L69] COND FALSE !(b3 == (unsigned char)0) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, na=1, nb=4] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=0] [L84] EXPR partial_sum + a0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=255] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=255] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=255] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=255] [L89] COND TRUE i < nb VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=255] [L90] COND TRUE i == (unsigned char)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=255] [L90] EXPR partial_sum + b0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=510] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=510] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=510] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=0, na=1, nb=4, partial_sum=510] [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=0, na=1, nb=4] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=0, na=1, nb=4, partial_sum=511, r0=511] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=0, na=1, nb=4, partial_sum=511, r0=511] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=0, na=1, nb=4, partial_sum=511, r0=511] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=0, na=1, nb=4, partial_sum=511, r0=511] [L104] EXPR i + (unsigned char)1 [L104] i = i + (unsigned char)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=1, na=1, nb=4, partial_sum=511, r0=511] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=511] [L83] COND FALSE !(i < na) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=511] [L89] COND TRUE i < nb VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=511] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=511] [L91] COND TRUE i == (unsigned char)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=1, r0=511] [L91] EXPR partial_sum + b1 [L91] partial_sum = partial_sum + b1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=256, r0=511] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=256, r0=511] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=1, na=1, nb=4, partial_sum=256, r0=511] [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=1, na=1, nb=4, r0=511] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=1, na=1, nb=4, r0=511] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=1, na=1, nb=4, partial_sum=513, r0=511, r1=513] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=1, na=1, nb=4, partial_sum=513, r0=511, r1=513] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=1, na=1, nb=4, partial_sum=513, r0=511, r1=513] [L104] EXPR i + (unsigned char)1 [L104] i = i + (unsigned char)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=2, na=1, nb=4, partial_sum=513, r0=511, r1=513] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=1, r0=511, r1=513] [L83] COND FALSE !(i < na) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=1, r0=511, r1=513] [L89] COND TRUE i < nb VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=1, r0=511, r1=513] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=1, r0=511, r1=513] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=1, r0=511, r1=513] [L92] COND TRUE i == (unsigned char)2 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=1, r0=511, r1=513] [L92] EXPR partial_sum + b2 [L92] partial_sum = partial_sum + b2 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=256, r0=511, r1=513] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=2, na=1, nb=4, partial_sum=256, r0=511, r1=513] [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=2, na=1, nb=4, r0=511, r1=513] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=2, na=1, nb=4, r0=511, r1=513] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=2, na=1, nb=4, r0=511, r1=513] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=2, na=1, nb=4, partial_sum=512, r0=511, r1=513, r2=512] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=2, na=1, nb=4, partial_sum=512, r0=511, r1=513, r2=512] [L104] EXPR i + (unsigned char)1 [L104] i = i + (unsigned char)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=1, i=3, na=1, nb=4, partial_sum=512, r0=511, r1=513, r2=512] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=1, r0=511, r1=513, r2=512] [L83] COND FALSE !(i < na) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=1, r0=511, r1=513, r2=512] [L89] COND TRUE i < nb VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=1, r0=511, r1=513, r2=512] [L90] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=1, r0=511, r1=513, r2=512] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=1, r0=511, r1=513, r2=512] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=1, r0=511, r1=513, r2=512] [L93] COND TRUE i == (unsigned char)3 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=1, r0=511, r1=513, r2=512] [L93] EXPR partial_sum + b3 [L93] partial_sum = partial_sum + b3 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512] [L95] COND FALSE !(partial_sum > ((unsigned char)254)) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=3, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512, r3=128] [L104] EXPR i + (unsigned char)1 [L104] i = i + (unsigned char)1 VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=4, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512, r3=128] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=4, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512, r3=128] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=4, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512, r3=128] [L116] r1 << 8U VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=4, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512, r3=128] [L116] r2 << 16U VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=4, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512, r3=128] [L116] r3 << 24U VAL [\old(a)=255, \old(b)=2147483647, a=255, a0=255, a1=0, a2=0, a3=0, b=2147483647, b0=-2147483649, b1=-8388609, b2=-32769, b3=-129, carry=0, i=4, na=1, nb=4, partial_sum=128, r0=511, r1=513, r2=512, r3=128] - UnprovableResult [Line: 60]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 72]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 74]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 84]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 84]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 85]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 87]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 90]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 93]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 93]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 104]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 104]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 44.7s, OverallIterations: 29, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6096 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6096 mSDsluCounter, 9938 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 219 IncrementalHoareTripleChecker+Unchecked, 6934 mSDsCounter, 544 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6447 IncrementalHoareTripleChecker+Invalid, 7210 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 544 mSolverCounterUnsat, 3004 mSDtfsCounter, 6447 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1278 GetRequests, 1022 SyntacticMatches, 26 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 19.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5160occurred in iteration=28, InterpolantAutomatonStates: 241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 28 MinimizatonAttempts, 39716 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 26.3s InterpolantComputationTime, 2268 NumberOfCodeBlocks, 2268 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2450 ConstructedInterpolants, 32 QuantifiedInterpolants, 11986 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1550 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 44 InterpolantComputations, 23 PerfectInterpolantSequences, 1648/1809 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:25:03,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a503b14-a6e2-4bc3-94a9-6546a4e0aaa8/bin/uautomizer-DQz5hQGWxF/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample