./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7 --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 8553bd7027647a5604588c30aa29c454809a172163824e055b8bdeea70d5613d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:05:51,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:05:51,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:05:51,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:05:51,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:05:51,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:05:52,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:05:52,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:05:52,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:05:52,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:05:52,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:05:52,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:05:52,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:05:52,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:05:52,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:05:52,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:05:52,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:05:52,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:05:52,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:05:52,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:05:52,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:05:52,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:05:52,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:05:52,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:05:52,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:05:52,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:05:52,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:05:52,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:05:52,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:05:52,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:05:52,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:05:52,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:05:52,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:05:52,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:05:52,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:05:52,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:05:52,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:05:52,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:05:52,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:05:52,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:05:52,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:05:52,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 20:05:52,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:05:52,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:05:52,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:05:52,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:05:52,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:05:52,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:05:52,093 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:05:52,093 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:05:52,093 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:05:52,093 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:05:52,094 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:05:52,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:05:52,094 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:05:52,094 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:05:52,095 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:05:52,095 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:05:52,095 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:05:52,095 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:05:52,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:05:52,096 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:05:52,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:05:52,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:05:52,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:05:52,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:05:52,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:05:52,098 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 20:05:52,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:05:52,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:05:52,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:05:52,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:05:52,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:05:52,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:05:52,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:05:52,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:05:52,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:05:52,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:05:52,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:05:52,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:05:52,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:05:52,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:05:52,102 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_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8553bd7027647a5604588c30aa29c454809a172163824e055b8bdeea70d5613d [2021-11-25 20:05:52,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:05:52,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:05:52,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:05:52,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:05:52,400 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:05:52,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2021-11-25 20:05:52,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/data/703664ad7/b6c52003745f41a689395c94c23add61/FLAG16420ee79 [2021-11-25 20:05:52,930 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:05:52,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2021-11-25 20:05:52,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/data/703664ad7/b6c52003745f41a689395c94c23add61/FLAG16420ee79 [2021-11-25 20:05:53,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/data/703664ad7/b6c52003745f41a689395c94c23add61 [2021-11-25 20:05:53,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:05:53,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:05:53,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:05:53,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:05:53,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:05:53,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a11561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53, skipping insertion in model container [2021-11-25 20:05:53,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:05:53,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:05:53,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:05:53,496 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:05:53,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:05:53,529 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:05:53,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53 WrapperNode [2021-11-25 20:05:53,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:05:53,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:05:53,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:05:53,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:05:53,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,577 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-11-25 20:05:53,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:05:53,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:05:53,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:05:53,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:05:53,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:05:53,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:05:53,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:05:53,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:05:53,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (1/1) ... [2021-11-25 20:05:53,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:05:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:53,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:05:53,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:05:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:05:53,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:05:53,770 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:05:53,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:05:53,869 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:05:53,885 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:05:53,885 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:05:53,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:05:53 BoogieIcfgContainer [2021-11-25 20:05:53,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:05:53,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:05:53,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:05:53,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:05:53,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:05:53" (1/3) ... [2021-11-25 20:05:53,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e1cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:05:53, skipping insertion in model container [2021-11-25 20:05:53,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:05:53" (2/3) ... [2021-11-25 20:05:53,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e1cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:05:53, skipping insertion in model container [2021-11-25 20:05:53,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:05:53" (3/3) ... [2021-11-25 20:05:53,897 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2021-11-25 20:05:53,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:05:53,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 20:05:53,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:05:53,959 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 [2021-11-25 20:05:53,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 20:05:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:53,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:05:53,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:53,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:05:53,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:05:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:53,987 INFO L85 PathProgramCache]: Analyzing trace with hash 65732945, now seen corresponding path program 1 times [2021-11-25 20:05:53,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:53,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657484540] [2021-11-25 20:05:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:54,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:54,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:54,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657484540] [2021-11-25 20:05:54,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657484540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:54,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:54,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:05:54,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343671962] [2021-11-25 20:05:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:54,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:05:54,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:05:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:54,224 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-11-25 20:05:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:54,363 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-11-25 20:05:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:05:54,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2021-11-25 20:05:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:54,373 INFO L225 Difference]: With dead ends: 32 [2021-11-25 20:05:54,373 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 20:05:54,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:54,380 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:54,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:05:54,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 20:05:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2021-11-25 20:05:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-25 20:05:54,422 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-11-25 20:05:54,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:54,422 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-25 20:05:54,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-11-25 20:05:54,423 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-25 20:05:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:05:54,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:54,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:05:54,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:05:54,424 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:05:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:54,425 INFO L85 PathProgramCache]: Analyzing trace with hash 65733137, now seen corresponding path program 1 times [2021-11-25 20:05:54,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:54,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596295261] [2021-11-25 20:05:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:54,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:54,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:54,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596295261] [2021-11-25 20:05:54,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596295261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:54,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:54,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:05:54,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934260200] [2021-11-25 20:05:54,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:54,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:05:54,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:05:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:05:54,490 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-11-25 20:05:54,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:54,564 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-11-25 20:05:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:05:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2021-11-25 20:05:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:54,565 INFO L225 Difference]: With dead ends: 25 [2021-11-25 20:05:54,565 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 20:05:54,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:54,568 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:54,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:05:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 20:05:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2021-11-25 20:05:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-25 20:05:54,573 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-11-25 20:05:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:54,573 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-25 20:05:54,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-11-25 20:05:54,574 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-25 20:05:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 20:05:54,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:54,574 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-11-25 20:05:54,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:05:54,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:05:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash 688900812, now seen corresponding path program 1 times [2021-11-25 20:05:54,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:54,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777704152] [2021-11-25 20:05:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:54,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:54,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:54,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777704152] [2021-11-25 20:05:54,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777704152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:05:54,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554065382] [2021-11-25 20:05:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:54,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:54,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:54,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:54,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:05:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:54,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:05:54,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:54,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:54,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554065382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:54,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:05:54,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-11-25 20:05:54,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897204773] [2021-11-25 20:05:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:54,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:54,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:54,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:54,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:05:54,832 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-25 20:05:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:54,897 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-11-25 20:05:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:05:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-11-25 20:05:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:54,898 INFO L225 Difference]: With dead ends: 32 [2021-11-25 20:05:54,899 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 20:05:54,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:05:54,902 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:54,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:05:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 20:05:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-11-25 20:05:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-25 20:05:54,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2021-11-25 20:05:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:54,919 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-25 20:05:54,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-25 20:05:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-25 20:05:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 20:05:54,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:54,921 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:54,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 20:05:55,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:55,139 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:05:55,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash 688901004, now seen corresponding path program 1 times [2021-11-25 20:05:55,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:55,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006253771] [2021-11-25 20:05:55,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:55,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:55,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006253771] [2021-11-25 20:05:55,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006253771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:05:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106222296] [2021-11-25 20:05:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:55,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:55,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:55,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:55,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:05:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:55,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:05:55,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:55,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:05:55,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106222296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:55,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:05:55,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-11-25 20:05:55,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064416927] [2021-11-25 20:05:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:55,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:55,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:05:55,331 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-25 20:05:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:55,375 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-25 20:05:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:05:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-11-25 20:05:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:55,377 INFO L225 Difference]: With dead ends: 17 [2021-11-25 20:05:55,377 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 20:05:55,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:05:55,379 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:55,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:05:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 20:05:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-11-25 20:05:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-25 20:05:55,383 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-11-25 20:05:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:55,384 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-25 20:05:55,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-25 20:05:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-25 20:05:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 20:05:55,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:55,385 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:55,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:55,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:55,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 20:05:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:55,586 INFO L85 PathProgramCache]: Analyzing trace with hash 866395590, now seen corresponding path program 1 times [2021-11-25 20:05:55,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:55,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259052974] [2021-11-25 20:05:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:55,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:55,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:55,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259052974] [2021-11-25 20:05:55,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259052974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:05:55,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576410792] [2021-11-25 20:05:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:55,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:55,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:55,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:55,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:05:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:05:55,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:55,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:05:55,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576410792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:55,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [669662753] [2021-11-25 20:05:55,839 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:05:55,840 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:05:55,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:05:55,849 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:05:55,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:05:55,924 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:05:56,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [669662753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:56,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:05:56,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 11 [2021-11-25 20:05:56,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920769679] [2021-11-25 20:05:56,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:56,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:05:56,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:56,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:05:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:05:56,066 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2021-11-25 20:05:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:56,086 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-25 20:05:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:05:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 9 [2021-11-25 20:05:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:56,087 INFO L225 Difference]: With dead ends: 13 [2021-11-25 20:05:56,087 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 20:05:56,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:05:56,088 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:56,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:05:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 20:05:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 20:05:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:05:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 20:05:56,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-11-25 20:05:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:56,090 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 20:05:56,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2021-11-25 20:05:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 20:05:56,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 20:05:56,093 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-11-25 20:05:56,094 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-11-25 20:05:56,094 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-11-25 20:05:56,094 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-11-25 20:05:56,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:56,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:56,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 20:05:56,347 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-11-25 20:05:56,347 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 20:05:56,348 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-11-25 20:05:56,348 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-25 20:05:56,348 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-25 20:05:56,348 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-25 20:05:56,348 INFO L858 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-11-25 20:05:56,348 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-11-25 20:05:56,348 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-11-25 20:05:56,349 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 20:05:56,349 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 24) no Hoare annotation was computed. [2021-11-25 20:05:56,349 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 26) no Hoare annotation was computed. [2021-11-25 20:05:56,349 INFO L854 garLoopResultBuilder]: At program point L20-2(lines 19 25) the Hoare annotation is: (and (< 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y2~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~y2~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647)) [2021-11-25 20:05:56,349 INFO L854 garLoopResultBuilder]: At program point L18-1(lines 18 26) the Hoare annotation is: (or (<= |ULTIMATE.start_main_~y1~0#1| (+ |ULTIMATE.start_main_~y2~0#1| 2147483646)) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647)) [2021-11-25 20:05:56,352 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-25 20:05:56,354 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:05:56,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:05:56 BoogieIcfgContainer [2021-11-25 20:05:56,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:05:56,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:05:56,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:05:56,381 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:05:56,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:05:53" (3/4) ... [2021-11-25 20:05:56,385 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 20:05:56,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-25 20:05:56,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 20:05:56,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 20:05:56,430 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:05:56,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:05:56,431 INFO L158 Benchmark]: Toolchain (without parser) took 3104.06ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 80.2MB in the beginning and 80.0MB in the end (delta: 145.0kB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-11-25 20:05:56,432 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:05:56,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.21ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 79.8MB in the beginning and 112.4MB in the end (delta: -32.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:05:56,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.50ms. Allocated memory is still 136.3MB. Free memory was 112.4MB in the beginning and 110.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:05:56,433 INFO L158 Benchmark]: Boogie Preprocessor took 34.02ms. Allocated memory is still 136.3MB. Free memory was 110.6MB in the beginning and 109.7MB in the end (delta: 908.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:05:56,434 INFO L158 Benchmark]: RCFGBuilder took 273.28ms. Allocated memory is still 136.3MB. Free memory was 109.7MB in the beginning and 100.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:05:56,434 INFO L158 Benchmark]: TraceAbstraction took 2490.59ms. Allocated memory is still 136.3MB. Free memory was 100.2MB in the beginning and 82.1MB in the end (delta: 18.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-25 20:05:56,435 INFO L158 Benchmark]: Witness Printer took 49.23ms. Allocated memory is still 136.3MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:05:56,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.21ms. Allocated memory was 111.1MB in the beginning and 136.3MB in the end (delta: 25.2MB). Free memory was 79.8MB in the beginning and 112.4MB in the end (delta: -32.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.50ms. Allocated memory is still 136.3MB. Free memory was 112.4MB in the beginning and 110.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.02ms. Allocated memory is still 136.3MB. Free memory was 110.6MB in the beginning and 109.7MB in the end (delta: 908.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 273.28ms. Allocated memory is still 136.3MB. Free memory was 109.7MB in the beginning and 100.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2490.59ms. Allocated memory is still 136.3MB. Free memory was 100.2MB in the beginning and 82.1MB in the end (delta: 18.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 49.23ms. Allocated memory is still 136.3MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 0 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 22 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 342 SizeOfPredicates, 1 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 5/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 12, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 12, TOOLS_QUANTIFIERELIM_TIME: 0.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 24, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 56, DAG_COMPRESSION_RETAINED_NODES: 26, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: y1 <= y2 + 2147483646 || y1 <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((0 < y1 && y2 <= 2147483647) && 0 < y2) && y1 <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-25 20:05:56,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23fedbb8-2fcb-473b-88da-bf63177e539f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE