./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be --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 880d2d7c9e2f25a7e46db3097e52aca4d346dcd6a6bd5167ae8b79d69dbe64a0 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:45:44,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:45:44,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:45:44,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:45:44,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:45:44,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:45:44,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:45:44,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:45:44,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:45:44,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:45:44,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:45:44,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:45:44,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:45:44,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:45:44,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:45:44,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:45:44,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:45:44,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:45:44,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:45:44,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:45:44,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:45:44,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:45:44,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:45:44,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:45:44,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:45:44,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:45:44,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:45:44,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:45:44,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:45:44,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:45:44,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:45:44,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:45:44,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:45:44,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:45:44,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:45:44,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:45:44,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:45:44,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:45:44,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:45:44,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:45:44,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:45:44,582 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-21 19:45:44,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:45:44,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:45:44,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:45:44,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:45:44,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:45:44,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:45:44,641 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:45:44,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:45:44,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:45:44,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:45:44,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:45:44,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:45:44,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:45:44,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:45:44,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:45:44,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:45:44,644 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 19:45:44,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:45:44,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:45:44,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:45:44,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:45:44,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:45:44,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:45:44,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:45:44,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:45:44,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:45:44,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:45:44,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:45:44,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:45:44,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:45:44,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:45:44,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:45:44,653 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_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 880d2d7c9e2f25a7e46db3097e52aca4d346dcd6a6bd5167ae8b79d69dbe64a0 [2021-10-21 19:45:44,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:45:44,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:45:44,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:45:44,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:45:44,950 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:45:44,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/byte_add-2.i [2021-10-21 19:45:45,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/data/b7831936c/5f790bd6f864458db98d777de11df7ff/FLAG3f9911003 [2021-10-21 19:45:45,520 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:45:45,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/sv-benchmarks/c/bitvector/byte_add-2.i [2021-10-21 19:45:45,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/data/b7831936c/5f790bd6f864458db98d777de11df7ff/FLAG3f9911003 [2021-10-21 19:45:45,877 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/data/b7831936c/5f790bd6f864458db98d777de11df7ff [2021-10-21 19:45:45,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:45:45,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:45:45,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:45:45,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:45:45,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:45:45,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:45:45" (1/1) ... [2021-10-21 19:45:45,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aebdbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:45, skipping insertion in model container [2021-10-21 19:45:45,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:45:45" (1/1) ... [2021-10-21 19:45:45,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:45:45,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:45:46,138 WARN L228 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_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/sv-benchmarks/c/bitvector/byte_add-2.i[861,874] [2021-10-21 19:45:46,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:45:46,186 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:45:46,199 WARN L228 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_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/sv-benchmarks/c/bitvector/byte_add-2.i[861,874] [2021-10-21 19:45:46,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:45:46,241 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:45:46,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46 WrapperNode [2021-10-21 19:45:46,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:45:46,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:45:46,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:45:46,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:45:46,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:45:46,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:45:46,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:45:46,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:45:46,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:45:46,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:45:46,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:45:46,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:45:46,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (1/1) ... [2021-10-21 19:45:46,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:45:46,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:46,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:46,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:45:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:45:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:45:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:45:46,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:45:46,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:45:46,960 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 19:45:46,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:46 BoogieIcfgContainer [2021-10-21 19:45:46,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:45:46,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:45:46,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:45:46,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:45:46,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:45:45" (1/3) ... [2021-10-21 19:45:46,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15539544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:45:46, skipping insertion in model container [2021-10-21 19:45:46,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:46" (2/3) ... [2021-10-21 19:45:46,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15539544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:45:46, skipping insertion in model container [2021-10-21 19:45:46,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:46" (3/3) ... [2021-10-21 19:45:46,972 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add-2.i [2021-10-21 19:45:46,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:45:46,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-10-21 19:45:47,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:45:47,028 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 [2021-10-21 19:45:47,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-21 19:45:47,047 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) [2021-10-21 19:45:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 19:45:47,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:47,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 19:45:47,053 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)] === [2021-10-21 19:45:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:47,059 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-21 19:45:47,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:47,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458245973] [2021-10-21 19:45:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:47,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:47,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:47,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458245973] [2021-10-21 19:45:47,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458245973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:47,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:47,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:45:47,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771732699] [2021-10-21 19:45:47,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:45:47,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:47,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:45:47,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:45:47,237 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) [2021-10-21 19:45:47,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:47,257 INFO L93 Difference]: Finished difference Result 135 states and 177 transitions. [2021-10-21 19:45:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:45:47,259 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 [2021-10-21 19:45:47,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:47,269 INFO L225 Difference]: With dead ends: 135 [2021-10-21 19:45:47,269 INFO L226 Difference]: Without dead ends: 69 [2021-10-21 19:45:47,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:45:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-21 19:45:47,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-10-21 19:45:47,309 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) [2021-10-21 19:45:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2021-10-21 19:45:47,312 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 4 [2021-10-21 19:45:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:47,313 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2021-10-21 19:45:47,313 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) [2021-10-21 19:45:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2021-10-21 19:45:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:45:47,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:47,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:47,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:45:47,316 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)] === [2021-10-21 19:45:47,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:47,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1944470950, now seen corresponding path program 1 times [2021-10-21 19:45:47,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:47,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190497981] [2021-10-21 19:45:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:47,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:47,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:47,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190497981] [2021-10-21 19:45:47,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190497981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:47,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:47,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:45:47,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483613054] [2021-10-21 19:45:47,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:45:47,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:45:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:45:47,418 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) [2021-10-21 19:45:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:47,548 INFO L93 Difference]: Finished difference Result 145 states and 212 transitions. [2021-10-21 19:45:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:45:47,549 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 [2021-10-21 19:45:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:47,551 INFO L225 Difference]: With dead ends: 145 [2021-10-21 19:45:47,551 INFO L226 Difference]: Without dead ends: 98 [2021-10-21 19:45:47,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:45:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-21 19:45:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-10-21 19:45:47,581 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) [2021-10-21 19:45:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2021-10-21 19:45:47,583 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 13 [2021-10-21 19:45:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:47,583 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2021-10-21 19:45:47,584 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) [2021-10-21 19:45:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2021-10-21 19:45:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:45:47,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:47,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:47,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:45:47,586 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)] === [2021-10-21 19:45:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash 565405448, now seen corresponding path program 1 times [2021-10-21 19:45:47,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:47,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130956647] [2021-10-21 19:45:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:47,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:45:47,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:47,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130956647] [2021-10-21 19:45:47,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130956647] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:47,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:47,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:45:47,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955094612] [2021-10-21 19:45:47,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:47,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:45:47,767 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) [2021-10-21 19:45:48,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:48,007 INFO L93 Difference]: Finished difference Result 221 states and 296 transitions. [2021-10-21 19:45:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:48,008 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 [2021-10-21 19:45:48,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:48,013 INFO L225 Difference]: With dead ends: 221 [2021-10-21 19:45:48,013 INFO L226 Difference]: Without dead ends: 164 [2021-10-21 19:45:48,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:45:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-21 19:45:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 104. [2021-10-21 19:45:48,038 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) [2021-10-21 19:45:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2021-10-21 19:45:48,045 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 20 [2021-10-21 19:45:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:48,046 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2021-10-21 19:45:48,046 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) [2021-10-21 19:45:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2021-10-21 19:45:48,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:45:48,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:48,049 INFO L512 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] [2021-10-21 19:45:48,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:45:48,050 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)] === [2021-10-21 19:45:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1055427225, now seen corresponding path program 1 times [2021-10-21 19:45:48,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:48,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821559200] [2021-10-21 19:45:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:48,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:45:48,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:48,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821559200] [2021-10-21 19:45:48,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821559200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:48,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:48,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:45:48,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674343163] [2021-10-21 19:45:48,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:48,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:48,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:45:48,256 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) [2021-10-21 19:45:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:48,456 INFO L93 Difference]: Finished difference Result 259 states and 340 transitions. [2021-10-21 19:45:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:48,457 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 [2021-10-21 19:45:48,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:48,459 INFO L225 Difference]: With dead ends: 259 [2021-10-21 19:45:48,459 INFO L226 Difference]: Without dead ends: 194 [2021-10-21 19:45:48,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:45:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-21 19:45:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 120. [2021-10-21 19:45:48,486 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) [2021-10-21 19:45:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-10-21 19:45:48,489 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 23 [2021-10-21 19:45:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:48,490 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-10-21 19:45:48,490 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) [2021-10-21 19:45:48,491 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-10-21 19:45:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:45:48,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:48,495 INFO L512 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] [2021-10-21 19:45:48,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:45:48,496 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)] === [2021-10-21 19:45:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:48,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2113419709, now seen corresponding path program 1 times [2021-10-21 19:45:48,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:48,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089867892] [2021-10-21 19:45:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:48,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:48,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:48,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089867892] [2021-10-21 19:45:48,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089867892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:48,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130393797] [2021-10-21 19:45:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:48,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:48,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:48,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:48,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:45:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:48,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:45:48,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:48,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130393797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:48,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:45:48,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-10-21 19:45:48,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085207762] [2021-10-21 19:45:48,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:48,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:48,934 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) [2021-10-21 19:45:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:49,205 INFO L93 Difference]: Finished difference Result 216 states and 307 transitions. [2021-10-21 19:45:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:49,205 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 [2021-10-21 19:45:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:49,207 INFO L225 Difference]: With dead ends: 216 [2021-10-21 19:45:49,207 INFO L226 Difference]: Without dead ends: 169 [2021-10-21 19:45:49,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-21 19:45:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 145. [2021-10-21 19:45:49,213 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) [2021-10-21 19:45:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2021-10-21 19:45:49,214 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 26 [2021-10-21 19:45:49,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:49,215 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2021-10-21 19:45:49,215 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) [2021-10-21 19:45:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2021-10-21 19:45:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:45:49,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:49,217 INFO L512 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] [2021-10-21 19:45:49,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:49,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:49,438 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)] === [2021-10-21 19:45:49,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1301565703, now seen corresponding path program 1 times [2021-10-21 19:45:49,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:49,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010647681] [2021-10-21 19:45:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:49,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:49,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:49,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010647681] [2021-10-21 19:45:49,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010647681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:49,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537524747] [2021-10-21 19:45:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:49,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:49,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:49,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:49,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:45:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:49,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:45:49,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:45:49,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537524747] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:49,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:45:49,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-10-21 19:45:49,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355725226] [2021-10-21 19:45:49,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:49,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:49,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:49,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:49,780 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) [2021-10-21 19:45:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:50,128 INFO L93 Difference]: Finished difference Result 290 states and 391 transitions. [2021-10-21 19:45:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:50,129 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 [2021-10-21 19:45:50,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:50,131 INFO L225 Difference]: With dead ends: 290 [2021-10-21 19:45:50,131 INFO L226 Difference]: Without dead ends: 198 [2021-10-21 19:45:50,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 38.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:50,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-21 19:45:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 170. [2021-10-21 19:45:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2544378698224852) internal successors, (212), 169 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) [2021-10-21 19:45:50,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2021-10-21 19:45:50,140 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 33 [2021-10-21 19:45:50,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:50,141 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2021-10-21 19:45:50,141 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) [2021-10-21 19:45:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2021-10-21 19:45:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-21 19:45:50,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:50,144 INFO L512 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] [2021-10-21 19:45:50,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:50,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:50,368 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)] === [2021-10-21 19:45:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:50,369 INFO L82 PathProgramCache]: Analyzing trace with hash -665492217, now seen corresponding path program 1 times [2021-10-21 19:45:50,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:50,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321343818] [2021-10-21 19:45:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:50,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:50,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:50,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321343818] [2021-10-21 19:45:50,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321343818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:50,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223810958] [2021-10-21 19:45:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:50,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:50,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:50,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:50,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:45:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:50,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:45:50,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 19:45:50,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223810958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:50,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:45:50,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2021-10-21 19:45:50,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004881708] [2021-10-21 19:45:50,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:50,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:50,845 INFO L87 Difference]: Start difference. First operand 170 states and 212 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) [2021-10-21 19:45:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:51,152 INFO L93 Difference]: Finished difference Result 340 states and 447 transitions. [2021-10-21 19:45:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:51,153 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 [2021-10-21 19:45:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:51,154 INFO L225 Difference]: With dead ends: 340 [2021-10-21 19:45:51,155 INFO L226 Difference]: Without dead ends: 223 [2021-10-21 19:45:51,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-10-21 19:45:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 195. [2021-10-21 19:45:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.2422680412371134) internal successors, (241), 194 states have internal predecessors, (241), 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) [2021-10-21 19:45:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 241 transitions. [2021-10-21 19:45:51,162 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 241 transitions. Word has length 40 [2021-10-21 19:45:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:51,162 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 241 transitions. [2021-10-21 19:45:51,163 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) [2021-10-21 19:45:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 241 transitions. [2021-10-21 19:45:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-21 19:45:51,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:51,169 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:51,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 19:45:51,370 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)] === [2021-10-21 19:45:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:51,371 INFO L82 PathProgramCache]: Analyzing trace with hash 973067587, now seen corresponding path program 1 times [2021-10-21 19:45:51,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:51,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200119276] [2021-10-21 19:45:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:51,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-21 19:45:51,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:51,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200119276] [2021-10-21 19:45:51,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200119276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:51,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:51,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:45:51,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195634692] [2021-10-21 19:45:51,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:45:51,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:45:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:45:51,451 INFO L87 Difference]: Start difference. First operand 195 states and 241 transitions. Second operand has 3 states, 2 states have (on average 16.0) 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) [2021-10-21 19:45:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:51,463 INFO L93 Difference]: Finished difference Result 232 states and 282 transitions. [2021-10-21 19:45:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:45:51,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) 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 47 [2021-10-21 19:45:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:51,467 INFO L225 Difference]: With dead ends: 232 [2021-10-21 19:45:51,469 INFO L226 Difference]: Without dead ends: 169 [2021-10-21 19:45:51,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:45:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-21 19:45:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-10-21 19:45:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 168 states have internal predecessors, (207), 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) [2021-10-21 19:45:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2021-10-21 19:45:51,480 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 47 [2021-10-21 19:45:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:51,480 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2021-10-21 19:45:51,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) 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) [2021-10-21 19:45:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2021-10-21 19:45:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-21 19:45:51,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:51,485 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:51,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:45:51,485 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)] === [2021-10-21 19:45:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1501188431, now seen corresponding path program 1 times [2021-10-21 19:45:51,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:51,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858858625] [2021-10-21 19:45:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:51,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-21 19:45:51,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:51,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858858625] [2021-10-21 19:45:51,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858858625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:51,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:51,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:45:51,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159423295] [2021-10-21 19:45:51,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:45:51,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:45:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:45:51,570 INFO L87 Difference]: Start difference. First operand 169 states and 207 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-10-21 19:45:51,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:51,779 INFO L93 Difference]: Finished difference Result 465 states and 573 transitions. [2021-10-21 19:45:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:45:51,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 59 [2021-10-21 19:45:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:51,782 INFO L225 Difference]: With dead ends: 465 [2021-10-21 19:45:51,782 INFO L226 Difference]: Without dead ends: 347 [2021-10-21 19:45:51,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-10-21 19:45:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 209. [2021-10-21 19:45:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.2307692307692308) internal successors, (256), 208 states have internal predecessors, (256), 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) [2021-10-21 19:45:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 256 transitions. [2021-10-21 19:45:51,794 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 256 transitions. Word has length 59 [2021-10-21 19:45:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:51,796 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 256 transitions. [2021-10-21 19:45:51,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-10-21 19:45:51,797 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 256 transitions. [2021-10-21 19:45:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-21 19:45:51,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:51,800 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:51,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:45:51,800 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)] === [2021-10-21 19:45:51,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash -451056364, now seen corresponding path program 1 times [2021-10-21 19:45:51,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:51,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096155620] [2021-10-21 19:45:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:51,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-21 19:45:51,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:51,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096155620] [2021-10-21 19:45:51,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096155620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:51,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:51,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:45:51,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015569036] [2021-10-21 19:45:51,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:51,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:45:51,873 INFO L87 Difference]: Start difference. First operand 209 states and 256 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) [2021-10-21 19:45:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:51,933 INFO L93 Difference]: Finished difference Result 465 states and 569 transitions. [2021-10-21 19:45:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:51,934 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 62 [2021-10-21 19:45:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:51,937 INFO L225 Difference]: With dead ends: 465 [2021-10-21 19:45:51,937 INFO L226 Difference]: Without dead ends: 307 [2021-10-21 19:45:51,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:45:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-10-21 19:45:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 225. [2021-10-21 19:45:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.2633928571428572) internal successors, (283), 224 states have internal predecessors, (283), 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) [2021-10-21 19:45:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 283 transitions. [2021-10-21 19:45:51,949 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 283 transitions. Word has length 62 [2021-10-21 19:45:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:51,949 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 283 transitions. [2021-10-21 19:45:51,949 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) [2021-10-21 19:45:51,950 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 283 transitions. [2021-10-21 19:45:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-21 19:45:51,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:51,951 INFO L512 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] [2021-10-21 19:45:51,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:45:51,952 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)] === [2021-10-21 19:45:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:51,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1517528546, now seen corresponding path program 1 times [2021-10-21 19:45:51,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:51,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668736617] [2021-10-21 19:45:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:51,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 19:45:52,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:52,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668736617] [2021-10-21 19:45:52,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668736617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:52,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:52,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:45:52,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776138102] [2021-10-21 19:45:52,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:45:52,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:45:52,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:52,095 INFO L87 Difference]: Start difference. First operand 225 states and 283 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-10-21 19:45:52,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:52,398 INFO L93 Difference]: Finished difference Result 619 states and 780 transitions. [2021-10-21 19:45:52,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:45:52,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 68 [2021-10-21 19:45:52,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:52,403 INFO L225 Difference]: With dead ends: 619 [2021-10-21 19:45:52,403 INFO L226 Difference]: Without dead ends: 440 [2021-10-21 19:45:52,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:45:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-21 19:45:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 361. [2021-10-21 19:45:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.2583333333333333) internal successors, (453), 360 states have internal predecessors, (453), 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) [2021-10-21 19:45:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 453 transitions. [2021-10-21 19:45:52,421 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 453 transitions. Word has length 68 [2021-10-21 19:45:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:52,422 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 453 transitions. [2021-10-21 19:45:52,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-10-21 19:45:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 453 transitions. [2021-10-21 19:45:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-21 19:45:52,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:52,424 INFO L512 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] [2021-10-21 19:45:52,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:45:52,425 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)] === [2021-10-21 19:45:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:52,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2020673026, now seen corresponding path program 1 times [2021-10-21 19:45:52,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:52,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542467059] [2021-10-21 19:45:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:52,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-21 19:45:52,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:52,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542467059] [2021-10-21 19:45:52,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542467059] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:52,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124936357] [2021-10-21 19:45:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:52,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:52,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:52,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:52,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:45:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:45:52,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 19:45:52,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124936357] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:52,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:45:52,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-10-21 19:45:52,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332513854] [2021-10-21 19:45:52,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:45:52,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:52,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:45:52,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:45:52,797 INFO L87 Difference]: Start difference. First operand 361 states and 453 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2021-10-21 19:45:52,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:52,959 INFO L93 Difference]: Finished difference Result 960 states and 1198 transitions. [2021-10-21 19:45:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:45:52,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 68 [2021-10-21 19:45:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:52,964 INFO L225 Difference]: With dead ends: 960 [2021-10-21 19:45:52,964 INFO L226 Difference]: Without dead ends: 616 [2021-10-21 19:45:52,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:45:52,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-21 19:45:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 496. [2021-10-21 19:45:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.2585858585858587) internal successors, (623), 495 states have internal predecessors, (623), 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) [2021-10-21 19:45:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 623 transitions. [2021-10-21 19:45:52,986 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 623 transitions. Word has length 68 [2021-10-21 19:45:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:52,987 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 623 transitions. [2021-10-21 19:45:52,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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) [2021-10-21 19:45:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 623 transitions. [2021-10-21 19:45:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-21 19:45:52,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:52,989 INFO L512 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] [2021-10-21 19:45:53,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:53,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:53,205 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)] === [2021-10-21 19:45:53,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:53,206 INFO L82 PathProgramCache]: Analyzing trace with hash 579694859, now seen corresponding path program 1 times [2021-10-21 19:45:53,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:53,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636240469] [2021-10-21 19:45:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:53,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 19:45:53,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:53,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636240469] [2021-10-21 19:45:53,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636240469] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:53,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:53,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:45:53,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193203821] [2021-10-21 19:45:53,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:45:53,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:45:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:53,301 INFO L87 Difference]: Start difference. First operand 496 states and 623 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-10-21 19:45:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:53,606 INFO L93 Difference]: Finished difference Result 1194 states and 1490 transitions. [2021-10-21 19:45:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:45:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 68 [2021-10-21 19:45:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:53,611 INFO L225 Difference]: With dead ends: 1194 [2021-10-21 19:45:53,611 INFO L226 Difference]: Without dead ends: 717 [2021-10-21 19:45:53,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:45:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-10-21 19:45:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 603. [2021-10-21 19:45:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.255813953488372) internal successors, (756), 602 states have internal predecessors, (756), 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) [2021-10-21 19:45:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 756 transitions. [2021-10-21 19:45:53,634 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 756 transitions. Word has length 68 [2021-10-21 19:45:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:53,635 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 756 transitions. [2021-10-21 19:45:53,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-10-21 19:45:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 756 transitions. [2021-10-21 19:45:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:45:53,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:53,637 INFO L512 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] [2021-10-21 19:45:53,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:45:53,638 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)] === [2021-10-21 19:45:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:53,638 INFO L82 PathProgramCache]: Analyzing trace with hash 415029660, now seen corresponding path program 1 times [2021-10-21 19:45:53,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:53,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315916904] [2021-10-21 19:45:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:53,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-21 19:45:53,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:53,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315916904] [2021-10-21 19:45:53,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315916904] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:53,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:53,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:45:53,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48563696] [2021-10-21 19:45:53,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:45:53,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:53,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:45:53,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:53,765 INFO L87 Difference]: Start difference. First operand 603 states and 756 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-10-21 19:45:54,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:54,296 INFO L93 Difference]: Finished difference Result 1482 states and 1841 transitions. [2021-10-21 19:45:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:45:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 74 [2021-10-21 19:45:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:54,304 INFO L225 Difference]: With dead ends: 1482 [2021-10-21 19:45:54,305 INFO L226 Difference]: Without dead ends: 825 [2021-10-21 19:45:54,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 87.3ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:45:54,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-10-21 19:45:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 717. [2021-10-21 19:45:54,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 1.2569832402234637) internal successors, (900), 716 states have internal predecessors, (900), 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) [2021-10-21 19:45:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 900 transitions. [2021-10-21 19:45:54,335 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 900 transitions. Word has length 74 [2021-10-21 19:45:54,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:54,335 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 900 transitions. [2021-10-21 19:45:54,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2021-10-21 19:45:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 900 transitions. [2021-10-21 19:45:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:45:54,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:54,338 INFO L512 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] [2021-10-21 19:45:54,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 19:45:54,339 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)] === [2021-10-21 19:45:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:54,339 INFO L82 PathProgramCache]: Analyzing trace with hash -78732058, now seen corresponding path program 1 times [2021-10-21 19:45:54,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:54,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192641130] [2021-10-21 19:45:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:54,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-21 19:45:54,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:54,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192641130] [2021-10-21 19:45:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192641130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:54,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121545475] [2021-10-21 19:45:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:54,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:54,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:54,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:54,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:45:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:54,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:45:54,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 19:45:54,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121545475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:54,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:45:54,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 6 [2021-10-21 19:45:54,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071652662] [2021-10-21 19:45:54,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:45:54,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:45:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:54,944 INFO L87 Difference]: Start difference. First operand 717 states and 900 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-10-21 19:45:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:55,825 INFO L93 Difference]: Finished difference Result 2236 states and 2670 transitions. [2021-10-21 19:45:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:45:55,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 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 74 [2021-10-21 19:45:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:55,839 INFO L225 Difference]: With dead ends: 2236 [2021-10-21 19:45:55,840 INFO L226 Difference]: Without dead ends: 2211 [2021-10-21 19:45:55,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 161.6ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:45:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-10-21 19:45:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 993. [2021-10-21 19:45:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 1.3629032258064515) internal successors, (1352), 992 states have internal predecessors, (1352), 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) [2021-10-21 19:45:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1352 transitions. [2021-10-21 19:45:55,909 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1352 transitions. Word has length 74 [2021-10-21 19:45:55,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:55,909 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1352 transitions. [2021-10-21 19:45:55,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-10-21 19:45:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1352 transitions. [2021-10-21 19:45:55,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-21 19:45:55,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:55,912 INFO L512 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] [2021-10-21 19:45:55,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:56,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:45:56,128 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)] === [2021-10-21 19:45:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2110504499, now seen corresponding path program 1 times [2021-10-21 19:45:56,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:56,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882806486] [2021-10-21 19:45:56,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:56,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 19:45:56,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:56,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882806486] [2021-10-21 19:45:56,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882806486] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:56,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:56,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:45:56,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591824419] [2021-10-21 19:45:56,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:45:56,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:45:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:56,240 INFO L87 Difference]: Start difference. First operand 993 states and 1352 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-10-21 19:45:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:56,683 INFO L93 Difference]: Finished difference Result 2272 states and 3078 transitions. [2021-10-21 19:45:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:45:56,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 74 [2021-10-21 19:45:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:56,693 INFO L225 Difference]: With dead ends: 2272 [2021-10-21 19:45:56,693 INFO L226 Difference]: Without dead ends: 1264 [2021-10-21 19:45:56,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:45:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-21 19:45:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1141. [2021-10-21 19:45:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 1.3666666666666667) internal successors, (1558), 1140 states have internal predecessors, (1558), 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) [2021-10-21 19:45:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1558 transitions. [2021-10-21 19:45:56,751 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1558 transitions. Word has length 74 [2021-10-21 19:45:56,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:56,751 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1558 transitions. [2021-10-21 19:45:56,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-10-21 19:45:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1558 transitions. [2021-10-21 19:45:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-21 19:45:56,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:56,754 INFO L512 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] [2021-10-21 19:45:56,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 19:45:56,755 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)] === [2021-10-21 19:45:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash 220871532, now seen corresponding path program 1 times [2021-10-21 19:45:56,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:56,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012732365] [2021-10-21 19:45:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:56,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-21 19:45:56,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:56,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012732365] [2021-10-21 19:45:56,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012732365] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:56,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:56,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:45:56,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130523575] [2021-10-21 19:45:56,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:45:56,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:45:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:45:56,865 INFO L87 Difference]: Start difference. First operand 1141 states and 1558 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2021-10-21 19:45:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:57,241 INFO L93 Difference]: Finished difference Result 3568 states and 4858 transitions. [2021-10-21 19:45:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:45:57,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 80 [2021-10-21 19:45:57,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:57,263 INFO L225 Difference]: With dead ends: 3568 [2021-10-21 19:45:57,263 INFO L226 Difference]: Without dead ends: 3401 [2021-10-21 19:45:57,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2021-10-21 19:45:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 1141. [2021-10-21 19:45:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 1.3666666666666667) internal successors, (1558), 1140 states have internal predecessors, (1558), 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) [2021-10-21 19:45:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1558 transitions. [2021-10-21 19:45:57,352 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1558 transitions. Word has length 80 [2021-10-21 19:45:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:57,352 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1558 transitions. [2021-10-21 19:45:57,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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) [2021-10-21 19:45:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1558 transitions. [2021-10-21 19:45:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-21 19:45:57,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:57,355 INFO L512 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] [2021-10-21 19:45:57,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 19:45:57,355 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)] === [2021-10-21 19:45:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:57,356 INFO L82 PathProgramCache]: Analyzing trace with hash 25170625, now seen corresponding path program 1 times [2021-10-21 19:45:57,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:57,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99896404] [2021-10-21 19:45:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:57,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-21 19:45:57,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:57,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99896404] [2021-10-21 19:45:57,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99896404] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:57,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:57,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:45:57,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224248005] [2021-10-21 19:45:57,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:45:57,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:45:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:45:57,496 INFO L87 Difference]: Start difference. First operand 1141 states and 1558 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2021-10-21 19:45:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:57,861 INFO L93 Difference]: Finished difference Result 3558 states and 4844 transitions. [2021-10-21 19:45:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:45:57,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 [2021-10-21 19:45:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:57,884 INFO L225 Difference]: With dead ends: 3558 [2021-10-21 19:45:57,885 INFO L226 Difference]: Without dead ends: 3384 [2021-10-21 19:45:57,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:45:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2021-10-21 19:45:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 1141. [2021-10-21 19:45:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 1.3666666666666667) internal successors, (1558), 1140 states have internal predecessors, (1558), 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) [2021-10-21 19:45:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1558 transitions. [2021-10-21 19:45:57,971 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1558 transitions. Word has length 80 [2021-10-21 19:45:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:57,971 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1558 transitions. [2021-10-21 19:45:57,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2021-10-21 19:45:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1558 transitions. [2021-10-21 19:45:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:45:57,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:57,975 INFO L512 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] [2021-10-21 19:45:57,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 19:45:57,975 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)] === [2021-10-21 19:45:57,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:57,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1618881827, now seen corresponding path program 1 times [2021-10-21 19:45:57,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:57,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381911291] [2021-10-21 19:45:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:57,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-21 19:45:58,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:58,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381911291] [2021-10-21 19:45:58,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381911291] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:58,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:58,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:45:58,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770199306] [2021-10-21 19:45:58,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:45:58,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:45:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:58,122 INFO L87 Difference]: Start difference. First operand 1141 states and 1558 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) [2021-10-21 19:45:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:58,772 INFO L93 Difference]: Finished difference Result 4706 states and 6408 transitions. [2021-10-21 19:45:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:45:58,773 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 [2021-10-21 19:45:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:58,806 INFO L225 Difference]: With dead ends: 4706 [2021-10-21 19:45:58,806 INFO L226 Difference]: Without dead ends: 4539 [2021-10-21 19:45:58,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:45:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2021-10-21 19:45:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 1141. [2021-10-21 19:45:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 1.3666666666666667) internal successors, (1558), 1140 states have internal predecessors, (1558), 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) [2021-10-21 19:45:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1558 transitions. [2021-10-21 19:45:58,913 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1558 transitions. Word has length 83 [2021-10-21 19:45:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:58,914 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1558 transitions. [2021-10-21 19:45:58,914 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) [2021-10-21 19:45:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1558 transitions. [2021-10-21 19:45:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:45:58,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:58,917 INFO L512 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] [2021-10-21 19:45:58,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-21 19:45:58,918 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)] === [2021-10-21 19:45:58,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:58,918 INFO L82 PathProgramCache]: Analyzing trace with hash -705708941, now seen corresponding path program 1 times [2021-10-21 19:45:58,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:58,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93438945] [2021-10-21 19:45:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:58,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-21 19:45:59,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:59,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93438945] [2021-10-21 19:45:59,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93438945] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:59,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:59,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:45:59,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108712337] [2021-10-21 19:45:59,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:45:59,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:45:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:59,067 INFO L87 Difference]: Start difference. First operand 1141 states and 1558 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) [2021-10-21 19:45:59,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:59,697 INFO L93 Difference]: Finished difference Result 4686 states and 6381 transitions. [2021-10-21 19:45:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:45:59,698 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 [2021-10-21 19:45:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:45:59,728 INFO L225 Difference]: With dead ends: 4686 [2021-10-21 19:45:59,729 INFO L226 Difference]: Without dead ends: 4512 [2021-10-21 19:45:59,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:45:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2021-10-21 19:45:59,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 1141. [2021-10-21 19:45:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 1.3666666666666667) internal successors, (1558), 1140 states have internal predecessors, (1558), 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) [2021-10-21 19:45:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1558 transitions. [2021-10-21 19:45:59,843 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1558 transitions. Word has length 83 [2021-10-21 19:45:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:45:59,843 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1558 transitions. [2021-10-21 19:45:59,844 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) [2021-10-21 19:45:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1558 transitions. [2021-10-21 19:45:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:45:59,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:45:59,847 INFO L512 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] [2021-10-21 19:45:59,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-21 19:45:59,848 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)] === [2021-10-21 19:45:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:59,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1508814206, now seen corresponding path program 1 times [2021-10-21 19:45:59,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:59,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696054538] [2021-10-21 19:45:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:59,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-21 19:45:59,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696054538] [2021-10-21 19:45:59,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696054538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:59,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808616736] [2021-10-21 19:45:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:59,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:59,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:59,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:46:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:00,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:46:00,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-21 19:46:00,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808616736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:00,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:00,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-21 19:46:00,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426330835] [2021-10-21 19:46:00,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:46:00,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:46:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:46:00,409 INFO L87 Difference]: Start difference. First operand 1141 states and 1558 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2021-10-21 19:46:00,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:00,628 INFO L93 Difference]: Finished difference Result 2890 states and 3972 transitions. [2021-10-21 19:46:00,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:46:00,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 [2021-10-21 19:46:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:00,642 INFO L225 Difference]: With dead ends: 2890 [2021-10-21 19:46:00,642 INFO L226 Difference]: Without dead ends: 1772 [2021-10-21 19:46:00,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:46:00,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2021-10-21 19:46:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1710. [2021-10-21 19:46:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1709 states have (on average 1.366296079578701) internal successors, (2335), 1709 states have internal predecessors, (2335), 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) [2021-10-21 19:46:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2335 transitions. [2021-10-21 19:46:00,737 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2335 transitions. Word has length 83 [2021-10-21 19:46:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:00,738 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 2335 transitions. [2021-10-21 19:46:00,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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) [2021-10-21 19:46:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2335 transitions. [2021-10-21 19:46:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:46:00,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:00,742 INFO L512 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] [2021-10-21 19:46:00,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:00,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-21 19:46:00,956 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)] === [2021-10-21 19:46:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:00,957 INFO L82 PathProgramCache]: Analyzing trace with hash 335021134, now seen corresponding path program 1 times [2021-10-21 19:46:00,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:00,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783012489] [2021-10-21 19:46:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:00,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-21 19:46:01,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:01,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783012489] [2021-10-21 19:46:01,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783012489] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:01,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108092469] [2021-10-21 19:46:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:01,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:01,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:01,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:01,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:46:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:01,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:46:01,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-21 19:46:01,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108092469] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:46:01,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:46:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-10-21 19:46:01,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031090992] [2021-10-21 19:46:01,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:46:01,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:46:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:46:01,644 INFO L87 Difference]: Start difference. First operand 1710 states and 2335 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-10-21 19:46:01,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:01,898 INFO L93 Difference]: Finished difference Result 3688 states and 5024 transitions. [2021-10-21 19:46:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:46:01,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 [2021-10-21 19:46:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:01,939 INFO L225 Difference]: With dead ends: 3688 [2021-10-21 19:46:01,940 INFO L226 Difference]: Without dead ends: 3308 [2021-10-21 19:46:01,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:46:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2021-10-21 19:46:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 2800. [2021-10-21 19:46:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 2799 states have (on average 1.3615576991782778) internal successors, (3811), 2799 states have internal predecessors, (3811), 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) [2021-10-21 19:46:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 3811 transitions. [2021-10-21 19:46:02,105 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 3811 transitions. Word has length 83 [2021-10-21 19:46:02,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:02,105 INFO L470 AbstractCegarLoop]: Abstraction has 2800 states and 3811 transitions. [2021-10-21 19:46:02,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-10-21 19:46:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 3811 transitions. [2021-10-21 19:46:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-21 19:46:02,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:02,110 INFO L512 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] [2021-10-21 19:46:02,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:02,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-21 19:46:02,329 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)] === [2021-10-21 19:46:02,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:02,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1670983295, now seen corresponding path program 1 times [2021-10-21 19:46:02,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:02,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046983088] [2021-10-21 19:46:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:02,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-21 19:46:02,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:02,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046983088] [2021-10-21 19:46:02,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046983088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:46:02,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:46:02,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:46:02,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397869328] [2021-10-21 19:46:02,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:46:02,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:46:02,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:46:02,453 INFO L87 Difference]: Start difference. First operand 2800 states and 3811 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) [2021-10-21 19:46:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:03,261 INFO L93 Difference]: Finished difference Result 6496 states and 8813 transitions. [2021-10-21 19:46:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:46:03,262 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 [2021-10-21 19:46:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:03,278 INFO L225 Difference]: With dead ends: 6496 [2021-10-21 19:46:03,279 INFO L226 Difference]: Without dead ends: 6329 [2021-10-21 19:46:03,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 97.6ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:46:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6329 states. [2021-10-21 19:46:03,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6329 to 2779. [2021-10-21 19:46:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2779 states, 2778 states have (on average 1.3621310295176385) internal successors, (3784), 2778 states have internal predecessors, (3784), 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) [2021-10-21 19:46:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3784 transitions. [2021-10-21 19:46:03,431 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3784 transitions. Word has length 85 [2021-10-21 19:46:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:03,431 INFO L470 AbstractCegarLoop]: Abstraction has 2779 states and 3784 transitions. [2021-10-21 19:46:03,432 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) [2021-10-21 19:46:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3784 transitions. [2021-10-21 19:46:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-21 19:46:03,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:03,435 INFO L512 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] [2021-10-21 19:46:03,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-21 19:46:03,436 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)] === [2021-10-21 19:46:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:03,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1447135889, now seen corresponding path program 1 times [2021-10-21 19:46:03,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:03,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288393573] [2021-10-21 19:46:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:03,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-21 19:46:03,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:03,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288393573] [2021-10-21 19:46:03,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288393573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:46:03,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:46:03,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:46:03,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890022230] [2021-10-21 19:46:03,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:46:03,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:46:03,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:46:03,597 INFO L87 Difference]: Start difference. First operand 2779 states and 3784 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) [2021-10-21 19:46:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:04,353 INFO L93 Difference]: Finished difference Result 7009 states and 9507 transitions. [2021-10-21 19:46:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:46:04,354 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 [2021-10-21 19:46:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:04,369 INFO L225 Difference]: With dead ends: 7009 [2021-10-21 19:46:04,369 INFO L226 Difference]: Without dead ends: 6685 [2021-10-21 19:46:04,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:46:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6685 states. [2021-10-21 19:46:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6685 to 2771. [2021-10-21 19:46:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2770 states have (on average 1.3631768953068593) internal successors, (3776), 2770 states have internal predecessors, (3776), 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) [2021-10-21 19:46:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 3776 transitions. [2021-10-21 19:46:04,521 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 3776 transitions. Word has length 85 [2021-10-21 19:46:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:04,522 INFO L470 AbstractCegarLoop]: Abstraction has 2771 states and 3776 transitions. [2021-10-21 19:46:04,522 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) [2021-10-21 19:46:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 3776 transitions. [2021-10-21 19:46:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-21 19:46:04,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:04,525 INFO L512 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] [2021-10-21 19:46:04,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-21 19:46:04,526 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)] === [2021-10-21 19:46:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:04,526 INFO L82 PathProgramCache]: Analyzing trace with hash -566259362, now seen corresponding path program 1 times [2021-10-21 19:46:04,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:04,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613911043] [2021-10-21 19:46:04,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:04,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-21 19:46:04,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:04,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613911043] [2021-10-21 19:46:04,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613911043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:04,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580754106] [2021-10-21 19:46:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:04,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:04,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:46:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:05,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:46:05,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-21 19:46:05,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580754106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:05,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:05,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-10-21 19:46:05,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840188894] [2021-10-21 19:46:05,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:46:05,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:05,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:46:05,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:46:05,764 INFO L87 Difference]: Start difference. First operand 2771 states and 3776 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2021-10-21 19:46:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:06,416 INFO L93 Difference]: Finished difference Result 7103 states and 9866 transitions. [2021-10-21 19:46:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:46:06,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 86 [2021-10-21 19:46:06,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:06,425 INFO L225 Difference]: With dead ends: 7103 [2021-10-21 19:46:06,426 INFO L226 Difference]: Without dead ends: 3949 [2021-10-21 19:46:06,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:46:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2021-10-21 19:46:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 3270. [2021-10-21 19:46:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3269 states have (on average 1.343530131538697) internal successors, (4392), 3269 states have internal predecessors, (4392), 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) [2021-10-21 19:46:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4392 transitions. [2021-10-21 19:46:06,633 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4392 transitions. Word has length 86 [2021-10-21 19:46:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:06,633 INFO L470 AbstractCegarLoop]: Abstraction has 3270 states and 4392 transitions. [2021-10-21 19:46:06,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2021-10-21 19:46:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4392 transitions. [2021-10-21 19:46:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-21 19:46:06,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:06,638 INFO L512 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] [2021-10-21 19:46:06,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:06,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-21 19:46:06,844 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)] === [2021-10-21 19:46:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:06,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1279960591, now seen corresponding path program 1 times [2021-10-21 19:46:06,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:06,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000801954] [2021-10-21 19:46:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:06,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-21 19:46:06,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:06,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000801954] [2021-10-21 19:46:06,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000801954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:06,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534694878] [2021-10-21 19:46:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:06,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:06,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:07,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:46:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:07,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:46:07,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-21 19:46:08,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534694878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:08,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:08,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-10-21 19:46:08,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439608282] [2021-10-21 19:46:08,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:46:08,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:08,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:46:08,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:46:08,317 INFO L87 Difference]: Start difference. First operand 3270 states and 4392 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2021-10-21 19:46:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:09,049 INFO L93 Difference]: Finished difference Result 6924 states and 9194 transitions. [2021-10-21 19:46:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:46:09,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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 86 [2021-10-21 19:46:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:09,062 INFO L225 Difference]: With dead ends: 6924 [2021-10-21 19:46:09,062 INFO L226 Difference]: Without dead ends: 5746 [2021-10-21 19:46:09,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:46:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2021-10-21 19:46:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 4068. [2021-10-21 19:46:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 4067 states have (on average 1.3420211458077207) internal successors, (5458), 4067 states have internal predecessors, (5458), 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) [2021-10-21 19:46:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 5458 transitions. [2021-10-21 19:46:09,235 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 5458 transitions. Word has length 86 [2021-10-21 19:46:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:09,235 INFO L470 AbstractCegarLoop]: Abstraction has 4068 states and 5458 transitions. [2021-10-21 19:46:09,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 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) [2021-10-21 19:46:09,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 5458 transitions. [2021-10-21 19:46:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-21 19:46:09,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:09,240 INFO L512 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] [2021-10-21 19:46:09,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:09,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:09,446 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)] === [2021-10-21 19:46:09,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1246814763, now seen corresponding path program 1 times [2021-10-21 19:46:09,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:09,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835996814] [2021-10-21 19:46:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:09,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-21 19:46:09,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:09,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835996814] [2021-10-21 19:46:09,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835996814] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:09,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965492286] [2021-10-21 19:46:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:09,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:09,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:09,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:09,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:46:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:46:10,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-21 19:46:11,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965492286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:11,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:11,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-10-21 19:46:11,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411552470] [2021-10-21 19:46:11,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:46:11,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:46:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:46:11,655 INFO L87 Difference]: Start difference. First operand 4068 states and 5458 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2021-10-21 19:46:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:12,778 INFO L93 Difference]: Finished difference Result 6995 states and 9340 transitions. [2021-10-21 19:46:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:46:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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 [2021-10-21 19:46:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:12,789 INFO L225 Difference]: With dead ends: 6995 [2021-10-21 19:46:12,790 INFO L226 Difference]: Without dead ends: 4763 [2021-10-21 19:46:12,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 313.7ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:46:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2021-10-21 19:46:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4262. [2021-10-21 19:46:12,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 1.335836658061488) internal successors, (5692), 4261 states have internal predecessors, (5692), 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) [2021-10-21 19:46:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 5692 transitions. [2021-10-21 19:46:12,997 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 5692 transitions. Word has length 89 [2021-10-21 19:46:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:12,998 INFO L470 AbstractCegarLoop]: Abstraction has 4262 states and 5692 transitions. [2021-10-21 19:46:12,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 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) [2021-10-21 19:46:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 5692 transitions. [2021-10-21 19:46:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-21 19:46:13,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:13,003 INFO L512 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] [2021-10-21 19:46:13,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:13,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:13,209 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)] === [2021-10-21 19:46:13,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:13,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1767062975, now seen corresponding path program 1 times [2021-10-21 19:46:13,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:13,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336452378] [2021-10-21 19:46:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:13,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-21 19:46:13,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:13,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336452378] [2021-10-21 19:46:13,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336452378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:13,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676202669] [2021-10-21 19:46:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:13,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:13,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:13,380 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:13,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:46:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:46:13,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-21 19:46:15,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676202669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:46:15,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:46:15,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2021-10-21 19:46:15,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912392273] [2021-10-21 19:46:15,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:46:15,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:46:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:46:15,759 INFO L87 Difference]: Start difference. First operand 4262 states and 5692 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) [2021-10-21 19:46:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:16,308 INFO L93 Difference]: Finished difference Result 8750 states and 11567 transitions. [2021-10-21 19:46:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:46:16,309 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 [2021-10-21 19:46:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:46:16,327 INFO L225 Difference]: With dead ends: 8750 [2021-10-21 19:46:16,328 INFO L226 Difference]: Without dead ends: 8338 [2021-10-21 19:46:16,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:46:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8338 states. [2021-10-21 19:46:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8338 to 4262. [2021-10-21 19:46:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 1.335836658061488) internal successors, (5692), 4261 states have internal predecessors, (5692), 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) [2021-10-21 19:46:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 5692 transitions. [2021-10-21 19:46:16,530 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 5692 transitions. Word has length 89 [2021-10-21 19:46:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:46:16,531 INFO L470 AbstractCegarLoop]: Abstraction has 4262 states and 5692 transitions. [2021-10-21 19:46:16,531 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) [2021-10-21 19:46:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 5692 transitions. [2021-10-21 19:46:16,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-21 19:46:16,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:46:16,538 INFO L512 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] [2021-10-21 19:46:16,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-21 19:46:16,752 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)] === [2021-10-21 19:46:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1585272271, now seen corresponding path program 1 times [2021-10-21 19:46:16,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:16,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976696935] [2021-10-21 19:46:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:16,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:16,876 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:46:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:16,973 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:46:16,973 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:46:16,974 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,977 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,977 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,977 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,981 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,982 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,983 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,984 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,985 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:46:16,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-21 19:46:16,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:46:17,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:46:17 BoogieIcfgContainer [2021-10-21 19:46:17,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:46:17,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:46:17,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:46:17,104 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:46:17,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:46" (3/4) ... [2021-10-21 19:46:17,108 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:46:17,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:46:17,110 INFO L168 Benchmark]: Toolchain (without parser) took 31227.58 ms. Allocated memory was 121.6 MB in the beginning and 318.8 MB in the end (delta: 197.1 MB). Free memory was 89.7 MB in the beginning and 238.0 MB in the end (delta: -148.3 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:17,110 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:46:17,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.16 ms. Allocated memory is still 121.6 MB. Free memory was 89.7 MB in the beginning and 96.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:17,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.71 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 94.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:17,112 INFO L168 Benchmark]: Boogie Preprocessor took 30.01 ms. Allocated memory is still 121.6 MB. Free memory was 94.7 MB in the beginning and 93.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:17,112 INFO L168 Benchmark]: RCFGBuilder took 633.69 ms. Allocated memory is still 121.6 MB. Free memory was 93.0 MB in the beginning and 78.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:17,112 INFO L168 Benchmark]: TraceAbstraction took 30138.70 ms. Allocated memory was 121.6 MB in the beginning and 318.8 MB in the end (delta: 197.1 MB). Free memory was 77.6 MB in the beginning and 238.0 MB in the end (delta: -160.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:17,113 INFO L168 Benchmark]: Witness Printer took 4.50 ms. Allocated memory is still 318.8 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:46:17,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.16 ms. Allocated memory is still 121.6 MB. Free memory was 89.7 MB in the beginning and 96.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.71 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 94.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.01 ms. Allocated memory is still 121.6 MB. Free memory was 94.7 MB in the beginning and 93.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 633.69 ms. Allocated memory is still 121.6 MB. Free memory was 93.0 MB in the beginning and 78.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30138.70 ms. Allocated memory was 121.6 MB in the beginning and 318.8 MB in the end (delta: 197.1 MB). Free memory was 77.6 MB in the beginning and 238.0 MB in the end (delta: -160.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.50 ms. Allocated memory is still 318.8 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L116] unsigned int a, b, r; [L118] a = __VERIFIER_nondet_uint() [L119] b = __VERIFIER_nondet_uint() [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND TRUE a3 == (unsigned char)0 [L52] EXPR na - 1 [L52] na = na - 1 [L53] COND TRUE a2 == (unsigned char)0 [L54] EXPR na - 1 [L54] na = na - 1 [L55] COND TRUE a1 == (unsigned char)0 [L56] EXPR na - 1 [L56] na = na - 1 [L60] nb = (unsigned char)4 [L61] COND FALSE !(b3 == (unsigned char)0) [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] EXPR partial_sum + a0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] EXPR partial_sum + b0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)254) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND TRUE i == (unsigned char)1 [L83] EXPR partial_sum + b1 [L83] partial_sum = partial_sum + b1 [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)254) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND FALSE !(i == (unsigned char)0) [L92] COND TRUE i == (unsigned char)1 [L92] r1 = (unsigned char)partial_sum [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND TRUE i == (unsigned char)2 [L84] EXPR partial_sum + b2 [L84] partial_sum = partial_sum + b2 [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)254) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND TRUE i == (unsigned char)2 [L93] r2 = (unsigned char)partial_sum [L94] COND FALSE !(i == (unsigned char)3) [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND FALSE !(i < na) [L81] COND TRUE i < nb [L82] COND FALSE !(i == (unsigned char)0) [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND TRUE i == (unsigned char)3 [L85] EXPR partial_sum + b3 [L85] partial_sum = partial_sum + b3 [L87] COND FALSE !(partial_sum > ((unsigned char)254)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND TRUE i == (unsigned char)3 [L94] r3 = (unsigned char)partial_sum [L96] EXPR i + (unsigned char)1 [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND FALSE !(i < (unsigned char)4) [L108] r1 << 8U [L108] r2 << 16U [L108] r3 << 24U - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 52]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 56]: 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: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 83]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 83]: 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: 96]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 96]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 105]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 105]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 108]: 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: 29971.5ms, OverallIterations: 29, TraceHistogramMax: 4, EmptinessCheckTime: 84.0ms, AutomataDifference: 11985.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3403 SDtfs, 5945 SDslu, 7781 SDs, 0 SdLazy, 6655 SolverSat, 402 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6955.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1026 GetRequests, 828 SyntacticMatches, 18 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1964.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4262occurred in iteration=27, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2085.8ms AutomataMinimizationTime, 28 MinimizatonAttempts, 28440 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 150.8ms SsaConstructionTime, 1911.5ms SatisfiabilityAnalysisTime, 9173.1ms InterpolantComputationTime, 2613 NumberOfCodeBlocks, 2613 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2483 ConstructedInterpolants, 35 QuantifiedInterpolants, 12817 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1841 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 39 InterpolantComputations, 23 PerfectInterpolantSequences, 2268/2396 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 [2021-10-21 19:46:17,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45bfae0-e39e-48ef-afac-0d6d3e1bab34/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...