./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/LogRecursive.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/LogRecursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS --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 e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:54:16,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:54:16,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:54:16,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:54:16,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:54:16,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:54:16,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:54:16,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:54:16,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:54:16,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:54:16,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:54:16,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:54:16,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:54:16,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:54:16,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:54:16,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:54:16,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:54:16,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:54:16,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:54:16,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:54:16,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:54:16,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:54:16,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:54:16,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:54:16,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:54:16,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:54:16,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:54:16,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:54:16,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:54:16,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:54:16,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:54:16,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:54:16,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:54:16,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:54:16,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:54:16,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:54:16,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:54:16,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:54:16,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:54:16,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:54:16,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:54:16,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 07:54:16,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:54:16,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:54:16,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:54:16,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:54:16,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:54:16,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:54:16,390 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:54:16,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:54:16,390 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:54:16,390 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:54:16,391 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:54:16,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:54:16,392 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:54:16,392 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:54:16,392 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:54:16,392 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:54:16,392 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:54:16,392 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:54:16,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:54:16,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:54:16,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:54:16,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:54:16,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:54:16,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:54:16,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:54:16,404 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 07:54:16,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:54:16,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:54:16,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:54:16,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:54:16,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:54:16,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:16,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:54:16,406 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:54:16,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:54:16,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:54:16,407 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:54:16,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:54:16,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:54:16,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:54:16,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e724a514255a950b17f8b31ed081620ead5e2540931c6bb88a6923d310e5f391 [2022-11-19 07:54:16,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:54:16,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:54:16,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:54:16,744 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:54:16,745 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:54:16,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-numeric/LogRecursive.c [2022-11-19 07:54:16,819 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/data/7297a80a0/231d1ff3e7f24122b75db6290b268f46/FLAG1ff6a1a4c [2022-11-19 07:54:17,257 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:54:17,257 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/sv-benchmarks/c/termination-numeric/LogRecursive.c [2022-11-19 07:54:17,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/data/7297a80a0/231d1ff3e7f24122b75db6290b268f46/FLAG1ff6a1a4c [2022-11-19 07:54:17,660 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/data/7297a80a0/231d1ff3e7f24122b75db6290b268f46 [2022-11-19 07:54:17,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:54:17,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:54:17,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:17,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:54:17,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:54:17,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536cd2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17, skipping insertion in model container [2022-11-19 07:54:17,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:54:17,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:54:17,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:17,885 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:54:17,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:17,912 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:54:17,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17 WrapperNode [2022-11-19 07:54:17,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:17,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:17,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:54:17,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:54:17,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,944 INFO L138 Inliner]: procedures = 6, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-19 07:54:17,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:54:17,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:54:17,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:54:17,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:54:17,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,962 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:54:17,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:54:17,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:54:17,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:54:17,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (1/1) ... [2022-11-19 07:54:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:18,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:54:18,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:54:18,068 INFO L130 BoogieDeclarations]: Found specification of procedure _log [2022-11-19 07:54:18,068 INFO L138 BoogieDeclarations]: Found implementation of procedure _log [2022-11-19 07:54:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:54:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:54:18,135 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:54:18,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:54:18,290 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:54:18,302 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:54:18,302 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:54:18,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:18 BoogieIcfgContainer [2022-11-19 07:54:18,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:54:18,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:54:18,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:54:18,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:54:18,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:17" (1/3) ... [2022-11-19 07:54:18,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334eab0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:18, skipping insertion in model container [2022-11-19 07:54:18,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:17" (2/3) ... [2022-11-19 07:54:18,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334eab0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:18, skipping insertion in model container [2022-11-19 07:54:18,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:18" (3/3) ... [2022-11-19 07:54:18,314 INFO L112 eAbstractionObserver]: Analyzing ICFG LogRecursive.c [2022-11-19 07:54:18,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:54:18,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 07:54:18,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:54:18,393 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7bdb0fe2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:54:18,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 07:54:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:54:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:54:18,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:18,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:18,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting _logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:54:18,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1793613479, now seen corresponding path program 1 times [2022-11-19 07:54:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:18,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763111929] [2022-11-19 07:54:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:18,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:18,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112278427] [2022-11-19 07:54:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:18,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:18,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:18,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:18,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:54:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:18,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:54:18,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:54:18,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:18,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:18,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763111929] [2022-11-19 07:54:18,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:54:18,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112278427] [2022-11-19 07:54:18,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112278427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:18,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:18,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:54:18,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632731535] [2022-11-19 07:54:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:54:18,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:54:18,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:54:18,814 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:54:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:18,983 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-11-19 07:54:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:54:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 07:54:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:18,994 INFO L225 Difference]: With dead ends: 23 [2022-11-19 07:54:18,995 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 07:54:18,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:54:19,002 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:19,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 07:54:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-11-19 07:54:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:54:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-19 07:54:19,048 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2022-11-19 07:54:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:19,049 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-19 07:54:19,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:54:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-19 07:54:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:54:19,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:19,051 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:19,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:19,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 07:54:19,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:54:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1670712509, now seen corresponding path program 1 times [2022-11-19 07:54:19,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:19,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686994231] [2022-11-19 07:54:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:19,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:19,276 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:19,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213420607] [2022-11-19 07:54:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:19,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:19,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:19,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:19,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:54:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:19,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:54:19,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:54:19,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:19,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:19,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686994231] [2022-11-19 07:54:19,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:54:19,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213420607] [2022-11-19 07:54:19,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213420607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:19,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:19,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:54:19,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514391254] [2022-11-19 07:54:19,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:19,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:54:19,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:54:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:54:19,391 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:54:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:19,416 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-11-19 07:54:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:54:19,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-19 07:54:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:19,418 INFO L225 Difference]: With dead ends: 22 [2022-11-19 07:54:19,418 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 07:54:19,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:54:19,420 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:19,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 33 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:54:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 07:54:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-11-19 07:54:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:54:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-19 07:54:19,430 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 20 [2022-11-19 07:54:19,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:19,430 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-19 07:54:19,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:54:19,431 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-19 07:54:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:54:19,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:19,432 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:19,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:54:19,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-19 07:54:19,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:54:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1805524379, now seen corresponding path program 1 times [2022-11-19 07:54:19,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220694919] [2022-11-19 07:54:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:19,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:19,654 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:19,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057621321] [2022-11-19 07:54:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:19,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:19,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:19,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:19,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:54:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:19,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:54:19,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:54:19,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:54:19,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:19,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220694919] [2022-11-19 07:54:19,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:54:19,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057621321] [2022-11-19 07:54:19,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057621321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:54:19,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:54:19,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:54:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858576329] [2022-11-19 07:54:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:54:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:54:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:54:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:19,752 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:54:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:19,762 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-19 07:54:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:54:19,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-19 07:54:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:19,764 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:54:19,764 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 07:54:19,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:54:19,766 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:19,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:54:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 07:54:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 07:54:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:54:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-19 07:54:19,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2022-11-19 07:54:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:19,773 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-19 07:54:19,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:54:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-19 07:54:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 07:54:19,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:19,774 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:19,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:19,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:19,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:54:19,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1353302436, now seen corresponding path program 1 times [2022-11-19 07:54:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:19,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832913343] [2022-11-19 07:54:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:19,999 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:19,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213324286] [2022-11-19 07:54:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:20,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:20,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:20,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:20,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:54:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:20,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:54:20,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:54:20,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:54:20,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:20,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832913343] [2022-11-19 07:54:20,289 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:54:20,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213324286] [2022-11-19 07:54:20,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213324286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:20,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122959088] [2022-11-19 07:54:20,308 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:54:20,308 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:54:20,312 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:54:20,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:54:20,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-19 07:54:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274606497] [2022-11-19 07:54:20,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:54:20,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:54:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:20,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:54:20,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:54:20,316 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 07:54:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:20,364 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-19 07:54:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:54:20,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2022-11-19 07:54:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:20,366 INFO L225 Difference]: With dead ends: 35 [2022-11-19 07:54:20,366 INFO L226 Difference]: Without dead ends: 34 [2022-11-19 07:54:20,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:54:20,368 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:20,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:54:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-19 07:54:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-19 07:54:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:54:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2022-11-19 07:54:20,375 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 25 [2022-11-19 07:54:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:20,376 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2022-11-19 07:54:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 07:54:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2022-11-19 07:54:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:54:20,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:20,378 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:20,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:20,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:20,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:54:20,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1156661059, now seen corresponding path program 2 times [2022-11-19 07:54:20,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:20,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678589009] [2022-11-19 07:54:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:20,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:20,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841084840] [2022-11-19 07:54:20,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:54:20,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:20,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:20,607 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:20,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:54:20,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:54:20,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:54:20,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:54:20,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-19 07:54:20,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-19 07:54:21,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:21,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678589009] [2022-11-19 07:54:21,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:54:21,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841084840] [2022-11-19 07:54:21,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841084840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:21,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1143662294] [2022-11-19 07:54:21,782 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:54:21,782 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:54:21,782 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:54:21,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:54:21,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-19 07:54:21,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312588729] [2022-11-19 07:54:21,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:54:21,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 07:54:21,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 07:54:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:54:21,788 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-19 07:54:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:21,908 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-11-19 07:54:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:54:21,909 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 60 [2022-11-19 07:54:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:21,911 INFO L225 Difference]: With dead ends: 65 [2022-11-19 07:54:21,911 INFO L226 Difference]: Without dead ends: 64 [2022-11-19 07:54:21,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:54:21,912 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:21,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 80 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:54:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-19 07:54:21,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-19 07:54:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 07:54:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2022-11-19 07:54:21,923 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2022-11-19 07:54:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:21,924 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2022-11-19 07:54:21,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 22 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-19 07:54:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2022-11-19 07:54:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:54:21,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:21,928 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:21,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:22,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:54:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -88303939, now seen corresponding path program 3 times [2022-11-19 07:54:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:22,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423345690] [2022-11-19 07:54:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:22,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:22,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001688474] [2022-11-19 07:54:22,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:54:22,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:22,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:22,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:22,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:54:22,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:54:22,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:54:22,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 07:54:22,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-19 07:54:22,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:54:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-11-19 07:54:28,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:54:28,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423345690] [2022-11-19 07:54:28,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:54:28,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001688474] [2022-11-19 07:54:28,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001688474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:54:28,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [409600169] [2022-11-19 07:54:28,441 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:54:28,441 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:54:28,442 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:54:28,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:54:28,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-19 07:54:28,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819122489] [2022-11-19 07:54:28,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:54:28,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-19 07:54:28,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:54:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-19 07:54:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-11-19 07:54:28,447 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-19 07:54:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:54:28,668 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2022-11-19 07:54:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-19 07:54:28,669 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 120 [2022-11-19 07:54:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:54:28,671 INFO L225 Difference]: With dead ends: 125 [2022-11-19 07:54:28,672 INFO L226 Difference]: Without dead ends: 124 [2022-11-19 07:54:28,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-11-19 07:54:28,674 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:54:28,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 93 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:54:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-19 07:54:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-19 07:54:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 99 states have internal predecessors, (100), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-19 07:54:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2022-11-19 07:54:28,690 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 120 [2022-11-19 07:54:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:54:28,690 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2022-11-19 07:54:28,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-19 07:54:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2022-11-19 07:54:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 07:54:28,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:54:28,701 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2022-11-19 07:54:28,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:54:28,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:54:28,901 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:54:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:54:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash -411990778, now seen corresponding path program 4 times [2022-11-19 07:54:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:54:28,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132920837] [2022-11-19 07:54:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:54:28,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:54:28,930 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:54:28,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517147275] [2022-11-19 07:54:28,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 07:54:28,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:54:28,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:54:28,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:54:28,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:54:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:54:29,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 07:54:29,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:54:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2554 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2022-11-19 07:54:30,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2554 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2022-11-19 07:55:19,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:55:19,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132920837] [2022-11-19 07:55:19,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:55:19,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517147275] [2022-11-19 07:55:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517147275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:19,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [68128209] [2022-11-19 07:55:19,013 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:55:19,014 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:55:19,014 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:55:19,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:55:19,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2022-11-19 07:55:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637945038] [2022-11-19 07:55:19,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:55:19,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-19 07:55:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:55:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-19 07:55:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-11-19 07:55:19,026 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 94 states, 93 states have (on average 2.053763440860215) internal successors, (191), 94 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2022-11-19 07:55:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:19,466 INFO L93 Difference]: Finished difference Result 245 states and 269 transitions. [2022-11-19 07:55:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-19 07:55:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.053763440860215) internal successors, (191), 94 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) Word has length 235 [2022-11-19 07:55:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:19,476 INFO L225 Difference]: With dead ends: 245 [2022-11-19 07:55:19,476 INFO L226 Difference]: Without dead ends: 244 [2022-11-19 07:55:19,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-11-19 07:55:19,483 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:19,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 134 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:55:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-19 07:55:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-19 07:55:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 194 states have (on average 1.0103092783505154) internal successors, (196), 195 states have internal predecessors, (196), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2022-11-19 07:55:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2022-11-19 07:55:19,528 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 235 [2022-11-19 07:55:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:19,530 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2022-11-19 07:55:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.053763440860215) internal successors, (191), 94 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 46 states have return successors, (46), 46 states have call predecessors, (46), 1 states have call successors, (46) [2022-11-19 07:55:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2022-11-19 07:55:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-19 07:55:19,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:19,552 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 48, 48, 48, 47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:19,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:19,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:55:19,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [_logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 07:55:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash 286673597, now seen corresponding path program 5 times [2022-11-19 07:55:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:55:19,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115562174] [2022-11-19 07:55:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:55:19,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:55:19,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55486229] [2022-11-19 07:55:19,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:55:19,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:55:19,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:19,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:55:19,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:57:41,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2022-11-19 07:57:41,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:57:41,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 188 conjunts are in the unsatisfiable core [2022-11-19 07:57:41,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:14,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115562174] [2022-11-19 07:59:14,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:59:14,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55486229] [2022-11-19 07:59:14,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. [2022-11-19 07:59:14,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1077808233] [2022-11-19 07:59:14,323 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:59:14,323 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:14,323 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:59:14,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:14,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-19 07:59:14,324 ERROR L170 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2022-11-19 07:59:14,324 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-19 07:59:14,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location _logErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-19 07:59:14,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-19 07:59:14,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location _logErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-19 07:59:14,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location _logErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-19 07:59:14,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location _logErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-19 07:59:14,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:59:14,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:14,571 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2022-11-19 07:59:14,575 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:59:14,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:59:14 BoogieIcfgContainer [2022-11-19 07:59:14,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:59:14,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:59:14,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:59:14,624 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:59:14,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:18" (3/4) ... [2022-11-19 07:59:14,630 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:59:14,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:59:14,630 INFO L158 Benchmark]: Toolchain (without parser) took 296964.26ms. Allocated memory was 127.9MB in the beginning and 325.1MB in the end (delta: 197.1MB). Free memory was 85.0MB in the beginning and 134.8MB in the end (delta: -49.8MB). Peak memory consumption was 146.5MB. Max. memory is 16.1GB. [2022-11-19 07:59:14,631 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:59:14,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.76ms. Allocated memory is still 127.9MB. Free memory was 84.8MB in the beginning and 102.9MB in the end (delta: -18.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:59:14,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.89ms. Allocated memory is still 127.9MB. Free memory was 102.9MB in the beginning and 101.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:59:14,632 INFO L158 Benchmark]: Boogie Preprocessor took 18.71ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 100.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:59:14,632 INFO L158 Benchmark]: RCFGBuilder took 340.11ms. Allocated memory is still 127.9MB. Free memory was 100.7MB in the beginning and 90.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:59:14,633 INFO L158 Benchmark]: TraceAbstraction took 296315.72ms. Allocated memory was 127.9MB in the beginning and 325.1MB in the end (delta: 197.1MB). Free memory was 89.7MB in the beginning and 135.8MB in the end (delta: -46.1MB). Peak memory consumption was 153.1MB. Max. memory is 16.1GB. [2022-11-19 07:59:14,633 INFO L158 Benchmark]: Witness Printer took 6.55ms. Allocated memory is still 325.1MB. Free memory was 135.8MB in the beginning and 134.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:59:14,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.76ms. Allocated memory is still 127.9MB. Free memory was 84.8MB in the beginning and 102.9MB in the end (delta: -18.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.89ms. Allocated memory is still 127.9MB. Free memory was 102.9MB in the beginning and 101.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.71ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 100.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.11ms. Allocated memory is still 127.9MB. Free memory was 100.7MB in the beginning and 90.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 296315.72ms. Allocated memory was 127.9MB in the beginning and 325.1MB in the end (delta: 197.1MB). Free memory was 89.7MB in the beginning and 135.8MB in the end (delta: -46.1MB). Peak memory consumption was 153.1MB. Max. memory is 16.1GB. * Witness Printer took 6.55ms. Allocated memory is still 325.1MB. Free memory was 135.8MB in the beginning and 134.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] COND FALSE !(x < 0) [L23] int y = __VERIFIER_nondet_int(); [L24] COND FALSE !(y < 0) [L26] int z = __VERIFIER_nondet_int(); [L27] CALL _log(x,y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND TRUE x >= y && y > 1 [L41] EXPR x/y [L41] CALL, EXPR _log(x/y, y) [L40] COND FALSE !(x >= y && y > 1) [L43] return 0; [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] EXPR 1 + _log(x/y, y) [L41] return 1 + _log(x/y, y); [L41] RET, EXPR _log(x/y, y) [L41] 1 + _log(x/y, y) - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 296.2s, OverallIterations: 8, TraceHistogramMax: 49, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 446 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 362 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 489 IncrementalHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 84 mSDtfsCounter, 489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3157 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=7, InterpolantAutomatonStates: 185, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 141.4s SatisfiabilityAnalysisTime, 150.1s InterpolantComputationTime, 963 NumberOfCodeBlocks, 883 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 1751 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2128 ConjunctsInSsa, 285 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 3533/6649 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5757bae0-6d96-42d0-b700-db81565f535b/bin/utaipan-I9t0OCRTmS/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN