./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V --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 64bit --witnessprinter.graph.data.programhash 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:41:04,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:41:04,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:41:04,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:41:04,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:41:04,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:41:04,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:41:04,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:41:04,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:41:04,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:41:04,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:41:04,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:41:04,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:41:04,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:41:04,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:41:04,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:41:04,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:41:04,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:41:04,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:41:04,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:41:04,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:41:04,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:41:04,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:41:04,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:41:04,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:41:04,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:41:04,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:41:04,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:41:04,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:41:04,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:41:04,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:41:04,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:41:04,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:41:04,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:41:04,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:41:04,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:41:04,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:41:04,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:41:04,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:41:04,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:41:04,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:41:04,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-23 02:41:04,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:41:04,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:41:04,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:41:04,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:41:04,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:41:04,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:41:04,960 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:41:04,960 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:41:04,960 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:41:04,960 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:41:04,961 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:41:04,961 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:41:04,961 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:41:04,961 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:41:04,961 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:41:04,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:41:04,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:41:04,964 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:41:04,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:41:04,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:41:04,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:41:04,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:41:04,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:41:04,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:41:04,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:41:04,967 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 02:41:04,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:41:04,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:41:04,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:41:04,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:41:04,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:41:04,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:04,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:41:04,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:41:04,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:41:04,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:41:04,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:41:04,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:41:04,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:41:04,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:41:04,972 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_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2021-11-23 02:41:05,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:41:05,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:41:05,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:41:05,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:41:05,351 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:41:05,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-23 02:41:05,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/data/88cbf43d6/4c8297bec8ee46e1ae4b1a2c771ba472/FLAG2dd4be86b [2021-11-23 02:41:05,853 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:41:05,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-23 02:41:05,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/data/88cbf43d6/4c8297bec8ee46e1ae4b1a2c771ba472/FLAG2dd4be86b [2021-11-23 02:41:06,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/data/88cbf43d6/4c8297bec8ee46e1ae4b1a2c771ba472 [2021-11-23 02:41:06,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:41:06,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:41:06,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:06,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:41:06,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:41:06,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545e83e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06, skipping insertion in model container [2021-11-23 02:41:06,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:41:06,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:41:06,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:06,453 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:41:06,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:06,478 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:41:06,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06 WrapperNode [2021-11-23 02:41:06,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:06,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:06,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:41:06,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:41:06,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,509 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-11-23 02:41:06,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:06,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:41:06,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:41:06,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:41:06,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:41:06,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:41:06,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:41:06,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:41:06,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (1/1) ... [2021-11-23 02:41:06,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:06,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:06,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:41:06,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:41:06,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:41:06,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:41:06,679 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:41:06,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:41:06,781 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:41:06,798 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:41:06,798 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:41:06,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:06 BoogieIcfgContainer [2021-11-23 02:41:06,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:41:06,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:41:06,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:41:06,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:41:06,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:41:06" (1/3) ... [2021-11-23 02:41:06,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7831be74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:06, skipping insertion in model container [2021-11-23 02:41:06,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:06" (2/3) ... [2021-11-23 02:41:06,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7831be74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:06, skipping insertion in model container [2021-11-23 02:41:06,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:06" (3/3) ... [2021-11-23 02:41:06,809 INFO L111 eAbstractionObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2021-11-23 02:41:06,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:41:06,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-23 02:41:06,862 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:41:06,870 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:41:06,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-23 02:41:06,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 02:41:06,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:06,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 02:41:06,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:06,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2537489, now seen corresponding path program 1 times [2021-11-23 02:41:06,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:06,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45808439] [2021-11-23 02:41:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:06,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:07,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:07,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45808439] [2021-11-23 02:41:07,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45808439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:07,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:07,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:41:07,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515038356] [2021-11-23 02:41:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:07,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:07,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:07,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:07,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:07,073 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:07,163 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-11-23 02:41:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:07,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-23 02:41:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:07,174 INFO L225 Difference]: With dead ends: 35 [2021-11-23 02:41:07,174 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 02:41:07,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:07,181 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:07,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 13 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:41:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 02:41:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-11-23 02:41:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-23 02:41:07,221 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 4 [2021-11-23 02:41:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:07,221 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-23 02:41:07,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-23 02:41:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:41:07,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:07,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:41:07,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:41:07,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 78662207, now seen corresponding path program 1 times [2021-11-23 02:41:07,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:07,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465182744] [2021-11-23 02:41:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:07,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:07,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:07,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465182744] [2021-11-23 02:41:07,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465182744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:07,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:07,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:41:07,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233998884] [2021-11-23 02:41:07,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:07,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:07,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:07,308 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:07,354 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-23 02:41:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 02:41:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:07,356 INFO L225 Difference]: With dead ends: 30 [2021-11-23 02:41:07,356 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 02:41:07,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:07,359 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:07,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:41:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 02:41:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 02:41:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.619047619047619) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-23 02:41:07,366 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 5 [2021-11-23 02:41:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:07,366 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-23 02:41:07,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-23 02:41:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:41:07,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:07,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:07,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:41:07,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:07,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:07,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1715027665, now seen corresponding path program 1 times [2021-11-23 02:41:07,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:07,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15092302] [2021-11-23 02:41:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:07,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:07,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:07,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15092302] [2021-11-23 02:41:07,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15092302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:07,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:07,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:07,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791847735] [2021-11-23 02:41:07,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:07,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:07,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:07,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:07,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:07,412 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:07,515 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2021-11-23 02:41:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:41:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:07,519 INFO L225 Difference]: With dead ends: 48 [2021-11-23 02:41:07,520 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 02:41:07,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:07,534 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:07,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:41:07,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 02:41:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2021-11-23 02:41:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-11-23 02:41:07,543 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 7 [2021-11-23 02:41:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:07,544 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-11-23 02:41:07,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-11-23 02:41:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 02:41:07,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:07,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:07,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:41:07,549 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:07,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1715028575, now seen corresponding path program 1 times [2021-11-23 02:41:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:07,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597088719] [2021-11-23 02:41:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:07,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:07,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:07,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597088719] [2021-11-23 02:41:07,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597088719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:07,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:07,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:07,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095506737] [2021-11-23 02:41:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:07,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:07,583 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:07,638 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2021-11-23 02:41:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:07,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 02:41:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:07,640 INFO L225 Difference]: With dead ends: 63 [2021-11-23 02:41:07,641 INFO L226 Difference]: Without dead ends: 61 [2021-11-23 02:41:07,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:07,643 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:07,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:41:07,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-23 02:41:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2021-11-23 02:41:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 41 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2021-11-23 02:41:07,653 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 7 [2021-11-23 02:41:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:07,653 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2021-11-23 02:41:07,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2021-11-23 02:41:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:41:07,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:07,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:07,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:41:07,655 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1626249991, now seen corresponding path program 1 times [2021-11-23 02:41:07,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:07,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637316821] [2021-11-23 02:41:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:07,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:07,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:07,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637316821] [2021-11-23 02:41:07,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637316821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:07,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:07,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:07,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532053482] [2021-11-23 02:41:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:07,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:41:07,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:41:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:07,698 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:07,786 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2021-11-23 02:41:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:41:07,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 02:41:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:07,788 INFO L225 Difference]: With dead ends: 59 [2021-11-23 02:41:07,789 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 02:41:07,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:41:07,791 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:07,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 19 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:41:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 02:41:07,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-11-23 02:41:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.6511627906976745) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2021-11-23 02:41:07,801 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 8 [2021-11-23 02:41:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:07,802 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2021-11-23 02:41:07,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2021-11-23 02:41:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:41:07,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:07,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:07,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:41:07,804 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1626278212, now seen corresponding path program 1 times [2021-11-23 02:41:07,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:07,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539226362] [2021-11-23 02:41:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:07,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:07,851 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:07,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539226362] [2021-11-23 02:41:07,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539226362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:07,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:07,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:07,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262563574] [2021-11-23 02:41:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:07,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:07,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:07,855 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:07,909 INFO L93 Difference]: Finished difference Result 96 states and 135 transitions. [2021-11-23 02:41:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:07,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 02:41:07,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:07,911 INFO L225 Difference]: With dead ends: 96 [2021-11-23 02:41:07,911 INFO L226 Difference]: Without dead ends: 94 [2021-11-23 02:41:07,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:07,913 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:07,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 20 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:41:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-23 02:41:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2021-11-23 02:41:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 85 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 123 transitions. [2021-11-23 02:41:07,929 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 123 transitions. Word has length 8 [2021-11-23 02:41:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:07,929 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 123 transitions. [2021-11-23 02:41:07,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 123 transitions. [2021-11-23 02:41:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:41:07,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:07,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:07,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:41:07,931 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:07,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1124983043, now seen corresponding path program 1 times [2021-11-23 02:41:07,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:07,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611282047] [2021-11-23 02:41:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:07,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:07,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:07,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611282047] [2021-11-23 02:41:07,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611282047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:07,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:07,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:41:07,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663565042] [2021-11-23 02:41:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:07,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:41:07,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:41:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:07,960 INFO L87 Difference]: Start difference. First operand 86 states and 123 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:07,974 INFO L93 Difference]: Finished difference Result 86 states and 123 transitions. [2021-11-23 02:41:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:41:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 02:41:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:07,976 INFO L225 Difference]: With dead ends: 86 [2021-11-23 02:41:07,977 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 02:41:07,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:41:07,978 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:07,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:41:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 02:41:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-23 02:41:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 78 states have (on average 1.5) internal successors, (117), 84 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2021-11-23 02:41:08,007 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 9 [2021-11-23 02:41:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:08,008 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2021-11-23 02:41:08,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2021-11-23 02:41:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:41:08,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:08,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:08,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:41:08,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 514736030, now seen corresponding path program 1 times [2021-11-23 02:41:08,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139972948] [2021-11-23 02:41:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:08,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:08,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:08,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139972948] [2021-11-23 02:41:08,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139972948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:08,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:08,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:41:08,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101760888] [2021-11-23 02:41:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:08,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:08,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:08,074 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:08,120 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2021-11-23 02:41:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 02:41:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:08,122 INFO L225 Difference]: With dead ends: 85 [2021-11-23 02:41:08,122 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 02:41:08,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:08,126 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:08,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 15 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:41:08,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 02:41:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-23 02:41:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 83 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:08,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 111 transitions. [2021-11-23 02:41:08,150 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 111 transitions. Word has length 10 [2021-11-23 02:41:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:08,151 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 111 transitions. [2021-11-23 02:41:08,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:08,151 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 111 transitions. [2021-11-23 02:41:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:41:08,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:08,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 02:41:08,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:41:08,152 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:08,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1939177669, now seen corresponding path program 1 times [2021-11-23 02:41:08,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:08,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943804661] [2021-11-23 02:41:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:08,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:08,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:08,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943804661] [2021-11-23 02:41:08,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943804661] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:08,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265821222] [2021-11-23 02:41:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:08,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:08,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:08,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:08,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:41:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:08,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:41:08,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:08,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:08,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265821222] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2063609133] [2021-11-23 02:41:08,708 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-23 02:41:08,708 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:08,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:08,719 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:08,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:08,946 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:09,344 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1260#(and (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 9999) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~z~0#1| 10000))' at error location [2021-11-23 02:41:09,345 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:09,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:09,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-23 02:41:09,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699696838] [2021-11-23 02:41:09,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:09,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:41:09,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:09,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:41:09,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:41:09,348 INFO L87 Difference]: Start difference. First operand 84 states and 111 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:09,706 INFO L93 Difference]: Finished difference Result 214 states and 281 transitions. [2021-11-23 02:41:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 02:41:09,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:41:09,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:09,709 INFO L225 Difference]: With dead ends: 214 [2021-11-23 02:41:09,709 INFO L226 Difference]: Without dead ends: 213 [2021-11-23 02:41:09,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 02:41:09,711 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 248 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:09,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 25 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:41:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-23 02:41:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 143. [2021-11-23 02:41:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 142 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2021-11-23 02:41:09,725 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 13 [2021-11-23 02:41:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:09,725 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2021-11-23 02:41:09,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2021-11-23 02:41:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:41:09,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:09,727 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-23 02:41:09,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:09,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 02:41:09,942 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:09,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash -15034333, now seen corresponding path program 1 times [2021-11-23 02:41:09,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:09,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51777145] [2021-11-23 02:41:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:09,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:09,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51777145] [2021-11-23 02:41:09,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51777145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847038659] [2021-11-23 02:41:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:09,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:09,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:10,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:10,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:41:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:10,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:41:10,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:10,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:10,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847038659] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:10,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1883338546] [2021-11-23 02:41:10,187 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-23 02:41:10,187 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:10,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:10,188 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:10,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:10,345 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:10,618 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1811#(and (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (< (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1| 2147483648) 0) (<= |ULTIMATE.start_main_~z~0#1| 10000))' at error location [2021-11-23 02:41:10,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:10,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:10,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-23 02:41:10,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352008440] [2021-11-23 02:41:10,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:10,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:41:10,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:41:10,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:41:10,620 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:11,148 INFO L93 Difference]: Finished difference Result 260 states and 360 transitions. [2021-11-23 02:41:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 02:41:11,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 02:41:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:11,151 INFO L225 Difference]: With dead ends: 260 [2021-11-23 02:41:11,151 INFO L226 Difference]: Without dead ends: 257 [2021-11-23 02:41:11,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-11-23 02:41:11,153 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 248 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:11,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 21 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:41:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-23 02:41:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 166. [2021-11-23 02:41:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.2901234567901234) internal successors, (209), 165 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-11-23 02:41:11,167 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 14 [2021-11-23 02:41:11,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:11,167 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-11-23 02:41:11,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:11,168 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-11-23 02:41:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:41:11,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:11,169 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:11,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:11,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:41:11,394 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:11,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1476454657, now seen corresponding path program 1 times [2021-11-23 02:41:11,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:11,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512838890] [2021-11-23 02:41:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:11,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:11,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:11,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512838890] [2021-11-23 02:41:11,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512838890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:11,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597475780] [2021-11-23 02:41:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:11,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:11,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:11,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:11,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:41:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:11,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:41:11,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:11,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:11,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597475780] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:11,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [126768202] [2021-11-23 02:41:11,567 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:41:11,567 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:11,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:11,567 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:11,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:11,693 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:11,954 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2486#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 9999) (< |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-23 02:41:11,954 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:11,954 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:11,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 02:41:11,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788352709] [2021-11-23 02:41:11,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:11,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:41:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:11,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:41:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:41:11,956 INFO L87 Difference]: Start difference. First operand 166 states and 209 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:12,044 INFO L93 Difference]: Finished difference Result 376 states and 497 transitions. [2021-11-23 02:41:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:41:12,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 02:41:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:12,046 INFO L225 Difference]: With dead ends: 376 [2021-11-23 02:41:12,047 INFO L226 Difference]: Without dead ends: 374 [2021-11-23 02:41:12,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:41:12,048 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 77 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:12,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 32 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:41:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-23 02:41:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 273. [2021-11-23 02:41:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 269 states have (on average 1.2602230483271375) internal successors, (339), 272 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 339 transitions. [2021-11-23 02:41:12,065 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 339 transitions. Word has length 17 [2021-11-23 02:41:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:12,065 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 339 transitions. [2021-11-23 02:41:12,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 339 transitions. [2021-11-23 02:41:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:41:12,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:12,067 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 02:41:12,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:12,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:12,282 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:12,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash 218785273, now seen corresponding path program 1 times [2021-11-23 02:41:12,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:12,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617519129] [2021-11-23 02:41:12,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:12,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:41:12,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:12,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617519129] [2021-11-23 02:41:12,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617519129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:12,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239344429] [2021-11-23 02:41:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:12,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:12,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:12,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:12,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:41:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:12,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:41:12,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:41:12,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:41:12,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239344429] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:12,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [552022960] [2021-11-23 02:41:12,675 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:41:12,675 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:12,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:12,676 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:12,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:13,224 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:13,604 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3447#(and (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~z~0#1| 10000))' at error location [2021-11-23 02:41:13,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:13,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:13,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2021-11-23 02:41:13,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363492064] [2021-11-23 02:41:13,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:13,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 02:41:13,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 02:41:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2021-11-23 02:41:13,607 INFO L87 Difference]: Start difference. First operand 273 states and 339 transitions. Second operand has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:14,267 INFO L93 Difference]: Finished difference Result 510 states and 646 transitions. [2021-11-23 02:41:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-23 02:41:14,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 02:41:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:14,270 INFO L225 Difference]: With dead ends: 510 [2021-11-23 02:41:14,270 INFO L226 Difference]: Without dead ends: 507 [2021-11-23 02:41:14,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=612, Invalid=2144, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 02:41:14,273 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:14,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:41:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-23 02:41:14,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 304. [2021-11-23 02:41:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 300 states have (on average 1.24) internal successors, (372), 303 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2021-11-23 02:41:14,296 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 372 transitions. Word has length 23 [2021-11-23 02:41:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:14,297 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 372 transitions. [2021-11-23 02:41:14,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 372 transitions. [2021-11-23 02:41:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 02:41:14,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:14,299 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-23 02:41:14,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:14,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:14,518 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1998495684, now seen corresponding path program 2 times [2021-11-23 02:41:14,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038695502] [2021-11-23 02:41:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:14,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:14,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:14,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038695502] [2021-11-23 02:41:14,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038695502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:14,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175855826] [2021-11-23 02:41:14,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:41:14,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:14,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:14,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:41:14,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 02:41:14,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:41:14,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:41:14,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:14,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:15,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175855826] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:15,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175818383] [2021-11-23 02:41:15,005 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:41:15,005 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:15,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:15,005 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:15,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:15,491 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:15,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4704#(and (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~z~0#1| 10000))' at error location [2021-11-23 02:41:15,784 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:15,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:15,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2021-11-23 02:41:15,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810388057] [2021-11-23 02:41:15,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:15,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 02:41:15,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 02:41:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2021-11-23 02:41:15,787 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. Second operand has 22 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:17,267 INFO L93 Difference]: Finished difference Result 1477 states and 1782 transitions. [2021-11-23 02:41:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-23 02:41:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 02:41:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:17,285 INFO L225 Difference]: With dead ends: 1477 [2021-11-23 02:41:17,285 INFO L226 Difference]: Without dead ends: 1476 [2021-11-23 02:41:17,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1815, Invalid=6375, Unknown=0, NotChecked=0, Total=8190 [2021-11-23 02:41:17,294 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 409 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:17,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 29 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:41:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-23 02:41:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 704. [2021-11-23 02:41:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 1.247142857142857) internal successors, (873), 703 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 873 transitions. [2021-11-23 02:41:17,352 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 873 transitions. Word has length 28 [2021-11-23 02:41:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:17,352 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 873 transitions. [2021-11-23 02:41:17,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 22 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 873 transitions. [2021-11-23 02:41:17,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 02:41:17,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:17,357 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-11-23 02:41:17,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:17,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 02:41:17,570 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:17,570 INFO L85 PathProgramCache]: Analyzing trace with hash -92271481, now seen corresponding path program 2 times [2021-11-23 02:41:17,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:17,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187991830] [2021-11-23 02:41:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:17,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:17,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:17,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187991830] [2021-11-23 02:41:17,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187991830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176324752] [2021-11-23 02:41:17,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:41:17,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:17,678 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:17,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:41:17,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 02:41:17,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:41:17,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:41:17,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:18,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:26,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176324752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:26,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730315130] [2021-11-23 02:41:26,115 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-23 02:41:26,115 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:26,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:26,116 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:26,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:26,208 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:26,693 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7703#(and (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 9999) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~z~0#1| 10000))' at error location [2021-11-23 02:41:26,693 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:26,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:26,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-11-23 02:41:26,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287234270] [2021-11-23 02:41:26,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:26,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 02:41:26,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 02:41:26,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1279, Unknown=3, NotChecked=0, Total=1560 [2021-11-23 02:41:26,696 INFO L87 Difference]: Start difference. First operand 704 states and 873 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:28,763 INFO L93 Difference]: Finished difference Result 1399 states and 1678 transitions. [2021-11-23 02:41:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 02:41:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-23 02:41:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:28,772 INFO L225 Difference]: With dead ends: 1399 [2021-11-23 02:41:28,772 INFO L226 Difference]: Without dead ends: 1398 [2021-11-23 02:41:28,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1316, Invalid=3793, Unknown=3, NotChecked=0, Total=5112 [2021-11-23 02:41:28,776 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 709 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:28,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 86 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 752 Invalid, 0 Unknown, 68 Unchecked, 0.7s Time] [2021-11-23 02:41:28,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-11-23 02:41:28,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 874. [2021-11-23 02:41:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 870 states have (on average 1.2344827586206897) internal successors, (1074), 873 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1074 transitions. [2021-11-23 02:41:28,838 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1074 transitions. Word has length 31 [2021-11-23 02:41:28,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:28,838 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1074 transitions. [2021-11-23 02:41:28,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1074 transitions. [2021-11-23 02:41:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:41:28,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:28,843 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1] [2021-11-23 02:41:28,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:29,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 02:41:29,057 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1797904045, now seen corresponding path program 1 times [2021-11-23 02:41:29,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:29,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554573574] [2021-11-23 02:41:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:29,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-23 02:41:29,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:29,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554573574] [2021-11-23 02:41:29,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554573574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:29,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20552573] [2021-11-23 02:41:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:29,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:29,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:29,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:29,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:41:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:29,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:41:29,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:29,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:29,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20552573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:29,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236973526] [2021-11-23 02:41:29,698 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-23 02:41:29,698 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:29,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:29,699 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:29,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:29,782 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:30,137 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10824#(and (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0) (<= |ULTIMATE.start_main_~z~0#1| 10000))' at error location [2021-11-23 02:41:30,137 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:30,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:30,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 24 [2021-11-23 02:41:30,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181534874] [2021-11-23 02:41:30,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:30,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:41:30,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:41:30,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 02:41:30,139 INFO L87 Difference]: Start difference. First operand 874 states and 1074 transitions. Second operand has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:31,571 INFO L93 Difference]: Finished difference Result 2334 states and 2853 transitions. [2021-11-23 02:41:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 02:41:31,571 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 02:41:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:31,582 INFO L225 Difference]: With dead ends: 2334 [2021-11-23 02:41:31,583 INFO L226 Difference]: Without dead ends: 2131 [2021-11-23 02:41:31,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1049, Invalid=3921, Unknown=0, NotChecked=0, Total=4970 [2021-11-23 02:41:31,588 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 361 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:31,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 98 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 02:41:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2021-11-23 02:41:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 425. [2021-11-23 02:41:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 422 states have (on average 1.2085308056872037) internal successors, (510), 424 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 510 transitions. [2021-11-23 02:41:31,668 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 510 transitions. Word has length 35 [2021-11-23 02:41:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:31,668 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 510 transitions. [2021-11-23 02:41:31,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 510 transitions. [2021-11-23 02:41:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 02:41:31,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:31,670 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:31,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:31,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:31,892 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 492246977, now seen corresponding path program 2 times [2021-11-23 02:41:31,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:31,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902260445] [2021-11-23 02:41:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:31,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:31,967 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902260445] [2021-11-23 02:41:31,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902260445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:31,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835828669] [2021-11-23 02:41:31,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:41:31,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:31,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:31,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:41:32,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-23 02:41:32,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:41:32,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:41:32,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:32,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:32,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835828669] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026498485] [2021-11-23 02:41:32,234 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:41:32,234 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:32,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:32,235 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:32,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:32,303 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:32,555 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14581#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 9999) (< |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-23 02:41:32,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:32,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:32,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-23 02:41:32,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403335898] [2021-11-23 02:41:32,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:32,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:41:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:41:32,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:41:32,557 INFO L87 Difference]: Start difference. First operand 425 states and 510 transitions. Second operand has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:32,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:32,899 INFO L93 Difference]: Finished difference Result 1630 states and 2074 transitions. [2021-11-23 02:41:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:41:32,900 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 02:41:32,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:32,909 INFO L225 Difference]: With dead ends: 1630 [2021-11-23 02:41:32,909 INFO L226 Difference]: Without dead ends: 1628 [2021-11-23 02:41:32,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:41:32,911 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 233 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:32,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 64 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:41:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-11-23 02:41:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1156. [2021-11-23 02:41:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1153 states have (on average 1.183868169991327) internal successors, (1365), 1155 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1365 transitions. [2021-11-23 02:41:33,040 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1365 transitions. Word has length 37 [2021-11-23 02:41:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:33,040 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1365 transitions. [2021-11-23 02:41:33,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1365 transitions. [2021-11-23 02:41:33,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 02:41:33,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:33,042 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-23 02:41:33,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:33,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 02:41:33,259 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1120594886, now seen corresponding path program 3 times [2021-11-23 02:41:33,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:33,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436409368] [2021-11-23 02:41:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:33,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:33,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436409368] [2021-11-23 02:41:33,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436409368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933711400] [2021-11-23 02:41:33,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 02:41:33,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:33,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:33,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:33,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:41:33,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 02:41:33,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:41:33,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 02:41:33,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:33,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:41:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:34,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933711400] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:41:34,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [40903754] [2021-11-23 02:41:34,434 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:41:34,434 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:41:34,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:41:34,435 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:41:34,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:41:34,827 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:41:35,312 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18365#(and (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~z~0#1| 10000))' at error location [2021-11-23 02:41:35,313 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:41:35,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:41:35,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2021-11-23 02:41:35,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147289170] [2021-11-23 02:41:35,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:41:35,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-23 02:41:35,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:35,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-23 02:41:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=2701, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 02:41:35,316 INFO L87 Difference]: Start difference. First operand 1156 states and 1365 transitions. Second operand has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:55,767 INFO L93 Difference]: Finished difference Result 15995 states and 18854 transitions. [2021-11-23 02:41:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 464 states. [2021-11-23 02:41:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 02:41:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:55,836 INFO L225 Difference]: With dead ends: 15995 [2021-11-23 02:41:55,836 INFO L226 Difference]: Without dead ends: 15994 [2021-11-23 02:41:55,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134321 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=59679, Invalid=201953, Unknown=0, NotChecked=0, Total=261632 [2021-11-23 02:41:55,860 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2031 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4597 mSolverCounterSat, 990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 4597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:55,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 15 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 4597 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 02:41:55,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15994 states. [2021-11-23 02:41:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15994 to 6178. [2021-11-23 02:41:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 6175 states have (on average 1.1964372469635627) internal successors, (7388), 6177 states have internal predecessors, (7388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 7388 transitions. [2021-11-23 02:41:56,904 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 7388 transitions. Word has length 44 [2021-11-23 02:41:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:56,904 INFO L470 AbstractCegarLoop]: Abstraction has 6178 states and 7388 transitions. [2021-11-23 02:41:56,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:41:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 7388 transitions. [2021-11-23 02:41:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 02:41:56,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:56,907 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1] [2021-11-23 02:41:56,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:41:57,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 02:41:57,121 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-23 02:41:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2085279218, now seen corresponding path program 4 times [2021-11-23 02:41:57,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:57,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393890762] [2021-11-23 02:41:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:57,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:57,334 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:57,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:57,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393890762] [2021-11-23 02:41:57,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393890762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:41:57,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762480354] [2021-11-23 02:41:57,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 02:41:57,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:41:57,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:57,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:41:57,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 02:41:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:57,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 02:41:57,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:41:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:41:57,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:41,050 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-23 02:44:41,051 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-23 02:44:41,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1347040760] [2021-11-23 02:44:41,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-23 02:44:41,058 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:44:41,058 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:44:41,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:44:41,059 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:44:41,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:44:41,063 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:267) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) 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:610) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 45 more [2021-11-23 02:44:41,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:44:41,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-23 02:44:41,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478837477] [2021-11-23 02:44:41,066 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:44:41,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:44:41,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:44:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=2023, Unknown=25, NotChecked=0, Total=2550 [2021-11-23 02:44:41,067 INFO L87 Difference]: Start difference. First operand 6178 states and 7388 transitions. Second operand has 21 states, 20 states have (on average 2.9) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:44:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:44:41,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=502, Invalid=2023, Unknown=25, NotChecked=0, Total=2550 [2021-11-23 02:44:41,068 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:41,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:44:41,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:41,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 02:44:41,269 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@76eebb0e at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) 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:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) 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) [2021-11-23 02:44:41,271 INFO L158 Benchmark]: Toolchain (without parser) took 215029.90ms. Allocated memory was 130.0MB in the beginning and 585.1MB in the end (delta: 455.1MB). Free memory was 88.9MB in the beginning and 191.5MB in the end (delta: -102.6MB). Peak memory consumption was 353.3MB. Max. memory is 16.1GB. [2021-11-23 02:44:41,272 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:44:41,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.91ms. Allocated memory is still 130.0MB. Free memory was 88.7MB in the beginning and 104.3MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:44:41,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.33ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:44:41,273 INFO L158 Benchmark]: Boogie Preprocessor took 39.14ms. Allocated memory is still 130.0MB. Free memory was 102.7MB in the beginning and 101.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:44:41,273 INFO L158 Benchmark]: RCFGBuilder took 250.79ms. Allocated memory is still 130.0MB. Free memory was 101.6MB in the beginning and 91.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:44:41,273 INFO L158 Benchmark]: TraceAbstraction took 214468.30ms. Allocated memory was 130.0MB in the beginning and 585.1MB in the end (delta: 455.1MB). Free memory was 91.7MB in the beginning and 191.5MB in the end (delta: -99.8MB). Peak memory consumption was 357.7MB. Max. memory is 16.1GB. [2021-11-23 02:44:41,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.91ms. Allocated memory is still 130.0MB. Free memory was 88.7MB in the beginning and 104.3MB in the end (delta: -15.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.33ms. Allocated memory is still 130.0MB. Free memory was 104.3MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.14ms. Allocated memory is still 130.0MB. Free memory was 102.7MB in the beginning and 101.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 250.79ms. Allocated memory is still 130.0MB. Free memory was 101.6MB in the beginning and 91.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 214468.30ms. Allocated memory was 130.0MB in the beginning and 585.1MB in the end (delta: 455.1MB). Free memory was 91.7MB in the beginning and 191.5MB in the end (delta: -99.8MB). Peak memory consumption was 357.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@76eebb0e de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@76eebb0e: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d915c33-cdd7-4a5d-b8fc-0809140d5f0e/bin/utaipan-EQgc7hIp5V/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@76eebb0e