./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.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_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/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_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/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_bab68c10-3154-4091-b776-0d12b37ba5c4/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 fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:15:12,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:15:12,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:15:12,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:15:12,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:15:12,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:15:12,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:15:12,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:15:12,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:15:12,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:15:12,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:15:12,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:15:12,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:15:12,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:15:12,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:15:12,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:15:12,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:15:12,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:15:12,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:15:12,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:15:12,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:15:12,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:15:12,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:15:12,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:15:12,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:15:12,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:15:12,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:15:12,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:15:12,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:15:12,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:15:12,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:15:12,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:15:12,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:15:12,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:15:12,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:15:12,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:15:12,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:15:12,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:15:12,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:15:12,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:15:12,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:15:12,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 20:15:13,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:15:13,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:15:13,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:15:13,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:15:13,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:15:13,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:15:13,049 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:15:13,049 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:15:13,050 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:15:13,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:15:13,051 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:15:13,052 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:15:13,052 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:15:13,053 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:15:13,053 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:15:13,053 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:15:13,054 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:15:13,054 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:15:13,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:15:13,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:15:13,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:15:13,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:15:13,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:15:13,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:15:13,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:15:13,057 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 20:15:13,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:15:13,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:15:13,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:15:13,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:15:13,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:15:13,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:15:13,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:15:13,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:15:13,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:15:13,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:15:13,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:15:13,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:15:13,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:15:13,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:15:13,064 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_bab68c10-3154-4091-b776-0d12b37ba5c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef [2021-11-25 20:15:13,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:15:13,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:15:13,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:15:13,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:15:13,450 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:15:13,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2021-11-25 20:15:13,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/data/feca7ef8b/7aaab82259b9498b8ab04fef39eebff9/FLAGbeca97e92 [2021-11-25 20:15:13,932 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:15:13,934 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2021-11-25 20:15:13,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/data/feca7ef8b/7aaab82259b9498b8ab04fef39eebff9/FLAGbeca97e92 [2021-11-25 20:15:14,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/data/feca7ef8b/7aaab82259b9498b8ab04fef39eebff9 [2021-11-25 20:15:14,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:15:14,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:15:14,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:15:14,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:15:14,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:15:14,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ede4354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14, skipping insertion in model container [2021-11-25 20:15:14,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:15:14,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:15:14,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:15:14,513 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:15:14,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:15:14,541 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:15:14,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14 WrapperNode [2021-11-25 20:15:14,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:15:14,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:15:14,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:15:14,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:15:14,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,572 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-11-25 20:15:14,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:15:14,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:15:14,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:15:14,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:15:14,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:15:14,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:15:14,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:15:14,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:15:14,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (1/1) ... [2021-11-25 20:15:14,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:15:14,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:15:14,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:15:14,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:15:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:15:14,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:15:14,721 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:15:14,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:15:14,853 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:15:14,867 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:15:14,868 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:15:14,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:15:14 BoogieIcfgContainer [2021-11-25 20:15:14,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:15:14,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:15:14,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:15:14,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:15:14,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:15:14" (1/3) ... [2021-11-25 20:15:14,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c35bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:15:14, skipping insertion in model container [2021-11-25 20:15:14,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:14" (2/3) ... [2021-11-25 20:15:14,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c35bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:15:14, skipping insertion in model container [2021-11-25 20:15:14,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:15:14" (3/3) ... [2021-11-25 20:15:14,878 INFO L111 eAbstractionObserver]: Analyzing ICFG Collatz_bounded.c [2021-11-25 20:15:14,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:15:14,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 20:15:14,933 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:15:14,941 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 20:15:14,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 20:15:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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 20:15:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:15:14,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:14,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:15:14,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:15:14,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 67641555, now seen corresponding path program 1 times [2021-11-25 20:15:14,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:14,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629993304] [2021-11-25 20:15:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:14,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:15,168 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 20:15:15,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:15,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629993304] [2021-11-25 20:15:15,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629993304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:15:15,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:15:15,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:15:15,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148287474] [2021-11-25 20:15:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:15:15,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:15:15,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:15:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:15:15,206 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 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) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 20:15:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:15,405 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-11-25 20:15:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:15:15,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 20:15:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:15,415 INFO L225 Difference]: With dead ends: 34 [2021-11-25 20:15:15,416 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 20:15:15,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:15:15,422 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:15,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:15:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 20:15:15,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 20:15:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:15:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-11-25 20:15:15,465 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 5 [2021-11-25 20:15:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:15,466 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-11-25 20:15:15,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 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 20:15:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-11-25 20:15:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:15:15,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:15,467 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:15:15,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:15:15,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:15:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1409696742, now seen corresponding path program 1 times [2021-11-25 20:15:15,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:15,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136111550] [2021-11-25 20:15:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:15,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:15,614 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 20:15:15,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:15,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136111550] [2021-11-25 20:15:15,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136111550] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:15:15,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735388334] [2021-11-25 20:15:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:15,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:15,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:15:15,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:15:15,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:15:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:15,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:15:15,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:15:15,802 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 20:15:15,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:15:15,996 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 20:15:15,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735388334] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:15:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [103270419] [2021-11-25 20:15:16,018 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 20:15:16,019 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:15:16,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:15:16,030 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:15:16,031 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:15:16,261 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:15:16,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [103270419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:15:16,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:15:16,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 3] total 11 [2021-11-25 20:15:16,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686753960] [2021-11-25 20:15:16,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:15:16,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:15:16,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:15:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:15:16,664 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-11-25 20:15:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:16,885 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-11-25 20:15:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:15:16,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 11 [2021-11-25 20:15:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:16,889 INFO L225 Difference]: With dead ends: 62 [2021-11-25 20:15:16,889 INFO L226 Difference]: Without dead ends: 48 [2021-11-25 20:15:16,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:15:16,892 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:16,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:15:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-25 20:15:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2021-11-25 20:15:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 35 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) [2021-11-25 20:15:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-25 20:15:16,915 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 11 [2021-11-25 20:15:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:16,917 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-25 20:15:16,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-11-25 20:15:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-25 20:15:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:15:16,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:16,920 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:15:16,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:15:17,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:17,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:15:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1591049055, now seen corresponding path program 1 times [2021-11-25 20:15:17,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:17,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989941] [2021-11-25 20:15:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:17,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:15:17,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:17,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989941] [2021-11-25 20:15:17,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:15:17,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:15:17,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:15:17,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232324369] [2021-11-25 20:15:17,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:15:17,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:15:17,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:17,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:15:17,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:15:17,263 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 20:15:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:17,334 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-11-25 20:15:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:15:17,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 15 [2021-11-25 20:15:17,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:17,336 INFO L225 Difference]: With dead ends: 37 [2021-11-25 20:15:17,336 INFO L226 Difference]: Without dead ends: 32 [2021-11-25 20:15:17,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:15:17,339 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:17,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:15:17,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-25 20:15:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2021-11-25 20:15:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:15:17,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-25 20:15:17,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2021-11-25 20:15:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:17,347 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-25 20:15:17,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 20:15:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-25 20:15:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 20:15:17,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:17,348 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:15:17,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:15:17,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:15:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1591048863, now seen corresponding path program 1 times [2021-11-25 20:15:17,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:17,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226331362] [2021-11-25 20:15:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:17,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:17,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:17,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226331362] [2021-11-25 20:15:17,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226331362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:15:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709754966] [2021-11-25 20:15:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:17,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:15:17,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:15:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:15:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:17,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 20:15:17,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:15:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:17,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:15:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:17,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709754966] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:15:17,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658554313] [2021-11-25 20:15:17,741 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 20:15:17,742 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:15:17,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:15:17,743 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:15:17,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:15:19,854 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:15:19,944 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '444#(< 2147483647 (* 3 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 20:15:19,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:15:19,944 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:15:19,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 9 [2021-11-25 20:15:19,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956546614] [2021-11-25 20:15:19,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:15:19,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:15:19,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:15:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:15:19,953 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:15:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:20,123 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2021-11-25 20:15:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 20:15:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 20:15:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:20,125 INFO L225 Difference]: With dead ends: 72 [2021-11-25 20:15:20,125 INFO L226 Difference]: Without dead ends: 71 [2021-11-25 20:15:20,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:15:20,127 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:20,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:15:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-25 20:15:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2021-11-25 20:15:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:15:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-11-25 20:15:20,136 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 15 [2021-11-25 20:15:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:20,137 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-11-25 20:15:20,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:15:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2021-11-25 20:15:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 20:15:20,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:20,138 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-25 20:15:20,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:15:20,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:20,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:15:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1942598407, now seen corresponding path program 2 times [2021-11-25 20:15:20,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:20,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72787432] [2021-11-25 20:15:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:20,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:20,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72787432] [2021-11-25 20:15:20,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72787432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:15:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993961392] [2021-11-25 20:15:20,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:15:20,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:15:20,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:15:20,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:15:20,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:15:20,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:15:20,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:15:20,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:15:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:15:20,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:15:20,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993961392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:15:20,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:15:20,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-11-25 20:15:20,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101871352] [2021-11-25 20:15:20,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:15:20,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:15:20,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:20,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:15:20,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:15:20,635 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:15:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:20,693 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-11-25 20:15:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:15:20,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 27 [2021-11-25 20:15:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:20,695 INFO L225 Difference]: With dead ends: 88 [2021-11-25 20:15:20,695 INFO L226 Difference]: Without dead ends: 60 [2021-11-25 20:15:20,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:15:20,697 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:20,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:15:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-25 20:15:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2021-11-25 20:15:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:15:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-11-25 20:15:20,707 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 27 [2021-11-25 20:15:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:20,707 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-11-25 20:15:20,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:15:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-11-25 20:15:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 20:15:20,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:20,709 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2021-11-25 20:15:20,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:15:20,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:20,923 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:15:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1952344899, now seen corresponding path program 3 times [2021-11-25 20:15:20,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:20,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634487661] [2021-11-25 20:15:20,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:20,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:21,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634487661] [2021-11-25 20:15:21,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634487661] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:15:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231760100] [2021-11-25 20:15:21,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:15:21,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:21,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:15:21,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:15:21,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:15:21,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:15:21,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:15:21,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 20:15:21,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:15:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:21,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:15:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:22,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231760100] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:15:22,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [588352939] [2021-11-25 20:15:22,701 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 20:15:22,701 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:15:22,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:15:22,701 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:15:22,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:15:24,343 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:15:24,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1078#(< 2147483647 (* 3 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 20:15:24,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:15:24,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:15:24,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 26 [2021-11-25 20:15:24,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008536665] [2021-11-25 20:15:24,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:15:24,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 20:15:24,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:15:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 20:15:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=721, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:15:24,484 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:15:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:15:24,825 INFO L93 Difference]: Finished difference Result 168 states and 191 transitions. [2021-11-25 20:15:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:15:24,826 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-25 20:15:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:15:24,827 INFO L225 Difference]: With dead ends: 168 [2021-11-25 20:15:24,828 INFO L226 Difference]: Without dead ends: 167 [2021-11-25 20:15:24,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=555, Invalid=1085, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 20:15:24,829 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:15:24,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 2 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 108 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2021-11-25 20:15:24,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-25 20:15:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 78. [2021-11-25 20:15:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 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) [2021-11-25 20:15:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-11-25 20:15:24,863 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 35 [2021-11-25 20:15:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:15:24,864 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-11-25 20:15:24,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:15:24,864 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-11-25 20:15:24,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 20:15:24,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:15:24,871 INFO L514 BasicCegarLoop]: trace histogram [15, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1] [2021-11-25 20:15:24,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:15:25,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:25,099 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:15:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:15:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1538575371, now seen corresponding path program 4 times [2021-11-25 20:15:25,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:15:25,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042095018] [2021-11-25 20:15:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:15:25,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:15:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 13 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:15:25,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:15:25,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042095018] [2021-11-25 20:15:25,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042095018] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:15:25,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722656778] [2021-11-25 20:15:25,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:15:25,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:15:25,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:15:25,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:15:25,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:15:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:15:25,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 20:15:25,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:16:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 13 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:16:21,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:17:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 26 proven. 305 refuted. 12 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:17:27,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722656778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:17:27,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [750526706] [2021-11-25 20:17:27,512 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 20:17:27,512 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:17:27,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:17:27,513 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:17:27,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:17:32,703 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:17:32,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1899#(< 2147483647 (* 3 |ULTIMATE.start_main_~y~0#1|))' at error location [2021-11-25 20:17:32,987 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:17:32,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:17:32,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 16] total 62 [2021-11-25 20:17:32,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192902898] [2021-11-25 20:17:32,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:17:32,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-25 20:17:32,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:32,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-25 20:17:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1674, Invalid=2995, Unknown=23, NotChecked=0, Total=4692 [2021-11-25 20:17:32,992 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 63 states, 62 states have (on average 3.306451612903226) internal successors, (205), 63 states have internal predecessors, (205), 0 states have call successors, (0), 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 20:17:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:38,791 INFO L93 Difference]: Finished difference Result 367 states and 416 transitions. [2021-11-25 20:17:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-25 20:17:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.306451612903226) internal successors, (205), 63 states have internal predecessors, (205), 0 states have call successors, (0), 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 75 [2021-11-25 20:17:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:38,796 INFO L225 Difference]: With dead ends: 367 [2021-11-25 20:17:38,796 INFO L226 Difference]: Without dead ends: 366 [2021-11-25 20:17:38,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 166 SyntacticMatches, 27 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5532 ImplicationChecksByTransitivity, 116.1s TimeCoverageRelationStatistics Valid=2370, Invalid=4087, Unknown=23, NotChecked=0, Total=6480 [2021-11-25 20:17:38,802 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 375 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1367 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:38,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 2 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 96 Invalid, 0 Unknown, 1367 Unchecked, 0.2s Time] [2021-11-25 20:17:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-25 20:17:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 158. [2021-11-25 20:17:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.10828025477707) internal successors, (174), 157 states have internal predecessors, (174), 0 states have call successors, (0), 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 20:17:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2021-11-25 20:17:38,830 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 75 [2021-11-25 20:17:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:38,831 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2021-11-25 20:17:38,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.306451612903226) internal successors, (205), 63 states have internal predecessors, (205), 0 states have call successors, (0), 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 20:17:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2021-11-25 20:17:38,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-25 20:17:38,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:38,840 INFO L514 BasicCegarLoop]: trace histogram [31, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1] [2021-11-25 20:17:38,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:17:39,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:39,067 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 20:17:39,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:39,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1286493595, now seen corresponding path program 5 times [2021-11-25 20:17:39,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:39,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013038380] [2021-11-25 20:17:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:39,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 29 proven. 1546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:17:41,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:41,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013038380] [2021-11-25 20:17:41,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013038380] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:17:41,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211196389] [2021-11-25 20:17:41,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:17:41,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:17:41,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:17:41,228 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:17:41,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab68c10-3154-4091-b776-0d12b37ba5c4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process