./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/gcd02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad183272c46520d125e7fadb8bd25966ebd670c1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:11:14,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:11:14,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:11:14,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:11:14,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:11:14,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:11:14,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:11:14,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:11:14,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:11:14,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:11:14,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:11:14,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:11:14,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:11:14,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:11:14,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:11:14,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:11:14,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:11:14,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:11:14,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:11:14,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:11:14,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:11:14,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:11:14,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:11:14,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:11:14,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:11:14,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:11:14,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:11:14,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:11:14,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:11:14,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:11:14,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:11:14,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:11:14,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:11:14,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:11:14,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:11:14,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:11:14,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:11:14,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:11:14,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:11:14,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:11:14,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:11:14,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 08:11:14,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:11:14,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:11:14,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:11:14,596 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:11:14,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:11:14,597 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:11:14,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:11:14,597 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:11:14,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:11:14,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:11:14,598 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:11:14,598 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:11:14,598 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:11:14,598 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:11:14,599 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:11:14,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:11:14,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:11:14,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:11:14,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:11:14,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:11:14,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:11:14,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:11:14,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:11:14,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:11:14,601 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 08:11:14,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:11:14,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:11:14,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:11:14,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:11:14,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:11:14,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:11:14,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:11:14,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:11:14,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:11:14,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:11:14,603 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:11:14,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:11:14,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:11:14,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:11:14,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:11:14,604 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad183272c46520d125e7fadb8bd25966ebd670c1 [2021-10-13 08:11:14,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:11:14,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:11:14,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:11:14,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:11:14,900 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:11:14,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/recursive/gcd02.c [2021-10-13 08:11:14,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/data/be28988cc/1c90c260be874e3aa157a83429947a5e/FLAG25be72b27 [2021-10-13 08:11:15,514 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:11:15,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/sv-benchmarks/c/recursive/gcd02.c [2021-10-13 08:11:15,524 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/data/be28988cc/1c90c260be874e3aa157a83429947a5e/FLAG25be72b27 [2021-10-13 08:11:15,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/data/be28988cc/1c90c260be874e3aa157a83429947a5e [2021-10-13 08:11:15,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:11:15,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:11:15,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:11:15,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:11:15,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:11:15,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:15" (1/1) ... [2021-10-13 08:11:15,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e8a048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:15, skipping insertion in model container [2021-10-13 08:11:15,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:11:15" (1/1) ... [2021-10-13 08:11:15,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:11:15,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:11:16,120 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_5faa7da1-1cf2-408a-9c24-58bc7a040b19/sv-benchmarks/c/recursive/gcd02.c[623,636] [2021-10-13 08:11:16,132 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_5faa7da1-1cf2-408a-9c24-58bc7a040b19/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2021-10-13 08:11:16,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:11:16,145 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:11:16,155 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_5faa7da1-1cf2-408a-9c24-58bc7a040b19/sv-benchmarks/c/recursive/gcd02.c[623,636] [2021-10-13 08:11:16,161 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_5faa7da1-1cf2-408a-9c24-58bc7a040b19/sv-benchmarks/c/recursive/gcd02.c[1283,1296] [2021-10-13 08:11:16,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:11:16,175 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:11:16,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16 WrapperNode [2021-10-13 08:11:16,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:11:16,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:11:16,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:11:16,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:11:16,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:11:16,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:11:16,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:11:16,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:11:16,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:11:16,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:11:16,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:11:16,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:11:16,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (1/1) ... [2021-10-13 08:11:16,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:11:16,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:16,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:11:16,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:11:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-10-13 08:11:16,336 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-10-13 08:11:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:11:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:11:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2021-10-13 08:11:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2021-10-13 08:11:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:11:16,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:11:16,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:11:16,769 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 08:11:16,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:16 BoogieIcfgContainer [2021-10-13 08:11:16,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:11:16,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:11:16,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:11:16,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:11:16,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:11:15" (1/3) ... [2021-10-13 08:11:16,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cad332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:16, skipping insertion in model container [2021-10-13 08:11:16,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:11:16" (2/3) ... [2021-10-13 08:11:16,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cad332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:11:16, skipping insertion in model container [2021-10-13 08:11:16,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:16" (3/3) ... [2021-10-13 08:11:16,781 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2021-10-13 08:11:16,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:11:16,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 08:11:16,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:11:16,852 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, mConcurrency=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 [2021-10-13 08:11:16,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 08:11:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 30 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 08:11:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:11:16,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:16,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:16,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1823073644, now seen corresponding path program 1 times [2021-10-13 08:11:16,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:16,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790538606] [2021-10-13 08:11:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:16,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:17,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:17,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790538606] [2021-10-13 08:11:17,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790538606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:17,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:17,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:11:17,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343150985] [2021-10-13 08:11:17,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:11:17,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:11:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:11:17,113 INFO L87 Difference]: Start difference. First operand has 38 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 30 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:17,244 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2021-10-13 08:11:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:11:17,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 08:11:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:17,255 INFO L225 Difference]: With dead ends: 58 [2021-10-13 08:11:17,256 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 08:11:17,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:11:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 08:11:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-10-13 08:11:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 35 states have internal predecessors, (41), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 08:11:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-10-13 08:11:17,302 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 9 [2021-10-13 08:11:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:17,303 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-10-13 08:11:17,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-10-13 08:11:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:11:17,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:17,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:17,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:11:17,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:17,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:17,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1823073868, now seen corresponding path program 1 times [2021-10-13 08:11:17,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:17,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391607691] [2021-10-13 08:11:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:17,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:17,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:17,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391607691] [2021-10-13 08:11:17,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391607691] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:17,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:17,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:11:17,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037349620] [2021-10-13 08:11:17,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:11:17,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:11:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:11:17,446 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:17,631 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2021-10-13 08:11:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 08:11:17,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 08:11:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:17,634 INFO L225 Difference]: With dead ends: 76 [2021-10-13 08:11:17,634 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 08:11:17,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:11:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 08:11:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2021-10-13 08:11:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.28) internal successors, (64), 54 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-10-13 08:11:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2021-10-13 08:11:17,653 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 9 [2021-10-13 08:11:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:17,653 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2021-10-13 08:11:17,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2021-10-13 08:11:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:11:17,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:17,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:17,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:11:17,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:17,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1687624808, now seen corresponding path program 1 times [2021-10-13 08:11:17,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:17,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44734013] [2021-10-13 08:11:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:17,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:17,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:17,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44734013] [2021-10-13 08:11:17,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44734013] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:17,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:17,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 08:11:17,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018997405] [2021-10-13 08:11:17,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 08:11:17,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 08:11:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 08:11:17,759 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:11:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:17,954 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2021-10-13 08:11:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:11:17,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-10-13 08:11:17,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:17,962 INFO L225 Difference]: With dead ends: 87 [2021-10-13 08:11:17,962 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 08:11:17,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 08:11:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 08:11:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2021-10-13 08:11:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 56 states have (on average 1.25) internal successors, (70), 60 states have internal predecessors, (70), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2021-10-13 08:11:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2021-10-13 08:11:18,003 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 15 [2021-10-13 08:11:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:18,004 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2021-10-13 08:11:18,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:11:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2021-10-13 08:11:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:11:18,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:18,006 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:18,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:11:18,007 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:18,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1287368613, now seen corresponding path program 1 times [2021-10-13 08:11:18,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:18,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022772336] [2021-10-13 08:11:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:18,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:18,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:18,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022772336] [2021-10-13 08:11:18,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022772336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:18,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677396893] [2021-10-13 08:11:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:18,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:18,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:18,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:18,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:11:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:18,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:11:18,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:18,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:18,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677396893] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:18,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1628185794] [2021-10-13 08:11:18,776 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-10-13 08:11:18,776 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:11:18,786 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:11:18,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 08:11:18,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2021-10-13 08:11:18,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379543346] [2021-10-13 08:11:18,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 08:11:18,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 08:11:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-10-13 08:11:18,800 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:19,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:19,388 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2021-10-13 08:11:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 08:11:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:11:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:19,398 INFO L225 Difference]: With dead ends: 123 [2021-10-13 08:11:19,398 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 08:11:19,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 394.3ms TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 08:11:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 08:11:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2021-10-13 08:11:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 76 states have (on average 1.236842105263158) internal successors, (94), 79 states have internal predecessors, (94), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2021-10-13 08:11:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-10-13 08:11:19,427 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 15 [2021-10-13 08:11:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:19,428 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-13 08:11:19,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 14 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2021-10-13 08:11:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 08:11:19,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:19,430 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:19,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:19,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:19,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:19,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1573018880, now seen corresponding path program 1 times [2021-10-13 08:11:19,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:19,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969955051] [2021-10-13 08:11:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:19,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:19,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:19,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969955051] [2021-10-13 08:11:19,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969955051] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:19,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628485884] [2021-10-13 08:11:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:19,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:19,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:19,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:19,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 08:11:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:19,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 08:11:19,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:19,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:19,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628485884] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:11:19,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2022954298] [2021-10-13 08:11:19,998 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-10-13 08:11:19,998 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:11:19,999 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:11:20,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 08:11:20,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-10-13 08:11:20,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692147696] [2021-10-13 08:11:20,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:11:20,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:11:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-13 08:11:20,012 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:20,512 INFO L93 Difference]: Finished difference Result 114 states and 141 transitions. [2021-10-13 08:11:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 08:11:20,514 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 08:11:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:20,519 INFO L225 Difference]: With dead ends: 114 [2021-10-13 08:11:20,519 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 08:11:20,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 251.4ms TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2021-10-13 08:11:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 08:11:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2021-10-13 08:11:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 78 states have internal predecessors, (90), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2021-10-13 08:11:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2021-10-13 08:11:20,550 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 15 [2021-10-13 08:11:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:20,551 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2021-10-13 08:11:20,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 10 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:11:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2021-10-13 08:11:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:11:20,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:20,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:20,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:20,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:20,763 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:20,766 INFO L82 PathProgramCache]: Analyzing trace with hash -776761454, now seen corresponding path program 1 times [2021-10-13 08:11:20,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:20,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121745907] [2021-10-13 08:11:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:20,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:20,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:20,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121745907] [2021-10-13 08:11:20,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121745907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:20,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:20,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:11:20,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877357435] [2021-10-13 08:11:20,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:11:20,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:11:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:20,829 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:11:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:20,840 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2021-10-13 08:11:20,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:11:20,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-13 08:11:20,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:20,842 INFO L225 Difference]: With dead ends: 101 [2021-10-13 08:11:20,842 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 08:11:20,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:11:20,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 08:11:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-13 08:11:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 77 states have internal predecessors, (89), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2021-10-13 08:11:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2021-10-13 08:11:20,853 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 16 [2021-10-13 08:11:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:20,854 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2021-10-13 08:11:20,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:11:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2021-10-13 08:11:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 08:11:20,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:20,856 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:20,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 08:11:20,857 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:20,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1247773985, now seen corresponding path program 1 times [2021-10-13 08:11:20,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:20,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839057391] [2021-10-13 08:11:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:20,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:21,006 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:21,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839057391] [2021-10-13 08:11:21,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839057391] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:21,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976245989] [2021-10-13 08:11:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:21,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:21,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:21,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 08:11:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:21,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 08:11:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:21,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:11:21,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976245989] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:21,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:11:21,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 25 [2021-10-13 08:11:21,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54755948] [2021-10-13 08:11:21,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 08:11:21,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:21,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 08:11:21,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-10-13 08:11:21,734 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:11:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:21,893 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2021-10-13 08:11:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 08:11:21,894 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-10-13 08:11:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:21,895 INFO L225 Difference]: With dead ends: 119 [2021-10-13 08:11:21,895 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 08:11:21,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 377.9ms TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2021-10-13 08:11:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 08:11:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2021-10-13 08:11:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 71 states have internal predecessors, (82), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-13 08:11:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2021-10-13 08:11:21,908 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 21 [2021-10-13 08:11:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:21,909 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2021-10-13 08:11:21,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:11:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2021-10-13 08:11:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:11:21,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:21,911 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:21,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:22,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:22,133 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash 845626546, now seen corresponding path program 1 times [2021-10-13 08:11:22,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:22,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20939772] [2021-10-13 08:11:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:22,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 08:11:22,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:22,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20939772] [2021-10-13 08:11:22,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20939772] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:22,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:11:22,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 08:11:22,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694906937] [2021-10-13 08:11:22,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 08:11:22,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 08:11:22,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:11:22,243 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:11:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:22,408 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2021-10-13 08:11:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:11:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-10-13 08:11:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:22,412 INFO L225 Difference]: With dead ends: 119 [2021-10-13 08:11:22,412 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 08:11:22,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 08:11:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 08:11:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2021-10-13 08:11:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 79 states have internal predecessors, (91), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 13 states have call successors, (16) [2021-10-13 08:11:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2021-10-13 08:11:22,441 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 24 [2021-10-13 08:11:22,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:22,442 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2021-10-13 08:11:22,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:11:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2021-10-13 08:11:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 08:11:22,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:22,449 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:22,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 08:11:22,449 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1550339256, now seen corresponding path program 1 times [2021-10-13 08:11:22,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:22,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664736382] [2021-10-13 08:11:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:22,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:11:22,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:22,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664736382] [2021-10-13 08:11:22,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664736382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:22,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753812617] [2021-10-13 08:11:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:22,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:22,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:22,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:22,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 08:11:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:22,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 08:11:22,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:22,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:23,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753812617] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:23,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 08:11:23,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [11] total 23 [2021-10-13 08:11:23,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239986429] [2021-10-13 08:11:23,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 08:11:23,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 08:11:23,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2021-10-13 08:11:23,193 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 15 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 08:11:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:23,374 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2021-10-13 08:11:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 08:11:23,375 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2021-10-13 08:11:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:23,377 INFO L225 Difference]: With dead ends: 133 [2021-10-13 08:11:23,377 INFO L226 Difference]: Without dead ends: 115 [2021-10-13 08:11:23,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 290.0ms TimeCoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-10-13 08:11:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-13 08:11:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2021-10-13 08:11:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 79 states have internal predecessors, (89), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 13 states have call successors, (16) [2021-10-13 08:11:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2021-10-13 08:11:23,392 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 24 [2021-10-13 08:11:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:23,392 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2021-10-13 08:11:23,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-13 08:11:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2021-10-13 08:11:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 08:11:23,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:23,395 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] [2021-10-13 08:11:23,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:23,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 08:11:23,607 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:23,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:23,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1797709125, now seen corresponding path program 1 times [2021-10-13 08:11:23,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:23,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786771269] [2021-10-13 08:11:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:23,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:23,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:23,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786771269] [2021-10-13 08:11:23,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786771269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:23,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508174197] [2021-10-13 08:11:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:23,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:23,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:23,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:23,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 08:11:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:23,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 08:11:23,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:24,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:24,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508174197] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:24,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 08:11:24,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 28 [2021-10-13 08:11:24,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523484701] [2021-10-13 08:11:24,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 08:11:24,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 08:11:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2021-10-13 08:11:24,557 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:11:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:24,745 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2021-10-13 08:11:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 08:11:24,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-10-13 08:11:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:24,747 INFO L225 Difference]: With dead ends: 125 [2021-10-13 08:11:24,747 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 08:11:24,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 469.8ms TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 08:11:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 08:11:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2021-10-13 08:11:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 71 states have internal predecessors, (79), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-13 08:11:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2021-10-13 08:11:24,757 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 30 [2021-10-13 08:11:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:24,758 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2021-10-13 08:11:24,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:11:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2021-10-13 08:11:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 08:11:24,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:11:24,760 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:11:24,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:24,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 08:11:24,975 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 08:11:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:11:24,976 INFO L82 PathProgramCache]: Analyzing trace with hash 125646000, now seen corresponding path program 1 times [2021-10-13 08:11:24,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:11:24,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60185006] [2021-10-13 08:11:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:24,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:11:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 08:11:25,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:11:25,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60185006] [2021-10-13 08:11:25,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60185006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:11:25,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634589261] [2021-10-13 08:11:25,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:11:25,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:25,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:11:25,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:11:25,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 08:11:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:11:25,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 08:11:25,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:11:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 08:11:25,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:11:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 08:11:25,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634589261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:11:25,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 08:11:25,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [14] total 28 [2021-10-13 08:11:25,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159217177] [2021-10-13 08:11:25,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 08:11:25,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:11:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 08:11:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2021-10-13 08:11:25,973 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 08:11:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:11:26,141 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2021-10-13 08:11:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 08:11:26,142 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-10-13 08:11:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:11:26,143 INFO L225 Difference]: With dead ends: 92 [2021-10-13 08:11:26,143 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:11:26,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 468.3ms TimeCoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 08:11:26,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:11:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:11:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 08:11:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:11:26,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-10-13 08:11:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:11:26,145 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:11:26,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-13 08:11:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:11:26,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:11:26,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 08:11:26,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 08:11:26,148 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 08:11:26,149 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 08:11:26,149 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 08:11:26,149 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 08:11:26,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:11:26,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:11:26,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:11:26,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:11:26,763 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2021-10-13 08:11:26,763 INFO L857 garLoopResultBuilder]: For program point dividesFINAL(lines 32 40) no Hoare annotation was computed. [2021-10-13 08:11:26,763 INFO L857 garLoopResultBuilder]: For program point dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2021-10-13 08:11:26,763 INFO L857 garLoopResultBuilder]: For program point dividesEXIT(lines 32 40) no Hoare annotation was computed. [2021-10-13 08:11:26,763 INFO L857 garLoopResultBuilder]: For program point dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2021-10-13 08:11:26,763 INFO L857 garLoopResultBuilder]: For program point L39(line 39) no Hoare annotation was computed. [2021-10-13 08:11:26,763 INFO L857 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2021-10-13 08:11:26,764 INFO L853 garLoopResultBuilder]: At program point L39-2(line 39) the Hoare annotation is: (let ((.cse0 (not (< 0 |divides_#in~n|)))) (and (or (not (< |divides_#in~m| 2147483647)) (< divides_~m 2147483647) .cse0) (or (not (<= |divides_#in~m| 2147483647)) .cse0 (and (<= divides_~m 2147483647) (< 0 divides_~n) (<= divides_~n divides_~m))))) [2021-10-13 08:11:26,764 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-10-13 08:11:26,764 INFO L857 garLoopResultBuilder]: For program point L39-3(line 39) no Hoare annotation was computed. [2021-10-13 08:11:26,764 INFO L860 garLoopResultBuilder]: At program point dividesENTRY(lines 32 40) the Hoare annotation is: true [2021-10-13 08:11:26,764 INFO L857 garLoopResultBuilder]: For program point gcdEXIT(lines 17 29) no Hoare annotation was computed. [2021-10-13 08:11:26,764 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2021-10-13 08:11:26,765 INFO L857 garLoopResultBuilder]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-10-13 08:11:26,765 INFO L857 garLoopResultBuilder]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-13 08:11:26,765 INFO L857 garLoopResultBuilder]: For program point gcdFINAL(lines 17 29) no Hoare annotation was computed. [2021-10-13 08:11:26,765 INFO L857 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-10-13 08:11:26,765 INFO L857 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-10-13 08:11:26,765 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-13 08:11:26,765 INFO L853 garLoopResultBuilder]: At program point L28-2(line 28) the Hoare annotation is: (let ((.cse0 (not (<= |gcd_#in~y2| 2147483647))) (.cse1 (not (<= |gcd_#in~y1| 2147483647)))) (and (or (not (< |gcd_#in~y1| 2147483647)) (<= gcd_~y2 2147483646) (not (<= |gcd_#in~y2| 2147483646))) (or .cse0 (and (not (= gcd_~y1 gcd_~y2)) (< gcd_~y1 2147483647) (<= |gcd_#in~y1| gcd_~y1) (<= gcd_~y2 2147483647)) .cse1) (or .cse0 (and (< 0 gcd_~y1) (< 0 gcd_~y2)) .cse1))) [2021-10-13 08:11:26,766 INFO L857 garLoopResultBuilder]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-13 08:11:26,766 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-13 08:11:26,766 INFO L857 garLoopResultBuilder]: For program point L28-3(line 28) no Hoare annotation was computed. [2021-10-13 08:11:26,766 INFO L853 garLoopResultBuilder]: At program point L26-2(line 26) the Hoare annotation is: (let ((.cse0 (not (<= |gcd_#in~y2| 2147483647)))) (and (or .cse0 (and (<= gcd_~y2 2147483646) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= |gcd_#in~y1| gcd_~y1) (<= gcd_~y1 2147483647)) (not (<= |gcd_#in~y1| 2147483647))) (or .cse0 (and (< 0 gcd_~y1) (not (= gcd_~y1 gcd_~y2)) (< gcd_~y1 2147483647) (< 0 gcd_~y2)) (not (< |gcd_#in~y1| 2147483647))))) [2021-10-13 08:11:26,766 INFO L860 garLoopResultBuilder]: At program point gcdENTRY(lines 17 29) the Hoare annotation is: true [2021-10-13 08:11:26,766 INFO L857 garLoopResultBuilder]: For program point L26-3(line 26) no Hoare annotation was computed. [2021-10-13 08:11:26,766 INFO L857 garLoopResultBuilder]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-10-13 08:11:26,767 INFO L857 garLoopResultBuilder]: For program point L18-2(lines 17 29) no Hoare annotation was computed. [2021-10-13 08:11:26,767 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:11:26,767 INFO L853 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2021-10-13 08:11:26,767 INFO L857 garLoopResultBuilder]: For program point L52-1(line 52) no Hoare annotation was computed. [2021-10-13 08:11:26,767 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-10-13 08:11:26,767 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 46) no Hoare annotation was computed. [2021-10-13 08:11:26,767 INFO L860 garLoopResultBuilder]: At program point L42(lines 42 59) the Hoare annotation is: true [2021-10-13 08:11:26,768 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:11:26,768 INFO L853 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647) (< 0 ULTIMATE.start_main_~z~0)) [2021-10-13 08:11:26,768 INFO L857 garLoopResultBuilder]: For program point L53-1(line 53) no Hoare annotation was computed. [2021-10-13 08:11:26,768 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 58) no Hoare annotation was computed. [2021-10-13 08:11:26,773 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:11:26,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:11:26 BoogieIcfgContainer [2021-10-13 08:11:26,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:11:26,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:11:26,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:11:26,788 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:11:26,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:11:16" (3/4) ... [2021-10-13 08:11:26,793 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:11:26,800 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2021-10-13 08:11:26,801 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2021-10-13 08:11:26,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-13 08:11:26,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 08:11:26,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:11:26,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:11:26,878 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:11:26,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:11:26,880 INFO L168 Benchmark]: Toolchain (without parser) took 10989.01 ms. Allocated memory was 100.7 MB in the beginning and 155.2 MB in the end (delta: 54.5 MB). Free memory was 60.0 MB in the beginning and 121.7 MB in the end (delta: -61.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:26,880 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 76.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:11:26,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.85 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 76.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:26,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 74.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:26,882 INFO L168 Benchmark]: Boogie Preprocessor took 18.36 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.8 MB in the end (delta: 938.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:26,882 INFO L168 Benchmark]: RCFGBuilder took 544.46 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 60.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:26,883 INFO L168 Benchmark]: TraceAbstraction took 10013.11 ms. Allocated memory was 100.7 MB in the beginning and 155.2 MB in the end (delta: 54.5 MB). Free memory was 60.3 MB in the beginning and 124.8 MB in the end (delta: -64.5 MB). Peak memory consumption was 75.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:26,883 INFO L168 Benchmark]: Witness Printer took 90.15 ms. Allocated memory is still 155.2 MB. Free memory was 124.8 MB in the beginning and 121.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:11:26,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory is still 76.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.85 ms. Allocated memory is still 100.7 MB. Free memory was 59.8 MB in the beginning and 76.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.22 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 74.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.36 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 73.8 MB in the end (delta: 938.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 544.46 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 60.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10013.11 ms. Allocated memory was 100.7 MB in the beginning and 155.2 MB in the end (delta: 54.5 MB). Free memory was 60.3 MB in the beginning and 124.8 MB in the end (delta: -64.5 MB). Peak memory consumption was 75.1 MB. Max. memory is 16.1 GB. * Witness Printer took 90.15 ms. Allocated memory is still 155.2 MB. Free memory was 124.8 MB in the beginning and 121.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. 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 - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 9930.2ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 28.3ms, AutomataDifference: 2598.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 402.5ms, InitialAbstractionConstructionTime: 14.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 245 SDtfs, 532 SDslu, 1069 SDs, 0 SdLazy, 1828 SolverSat, 268 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1146.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 194 SyntacticMatches, 5 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2404.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=8, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 216.8ms AutomataMinimizationTime, 11 MinimizatonAttempts, 97 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 62 PreInvPairs, 64 NumberOfFragments, 152 HoareAnnotationTreeSize, 62 FomulaSimplifications, 91 FormulaSimplificationTreeSizeReduction, 103.0ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 703 FormulaSimplificationTreeSizeReductionInter, 289.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 65.8ms SsaConstructionTime, 344.1ms SatisfiabilityAnalysisTime, 4181.5ms InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 1869 SizeOfPredicates, 24 NumberOfNonLiveVariables, 584 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 61/109 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 08:11:26,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5faa7da1-1cf2-408a-9c24-58bc7a040b19/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...