./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loops/sum04-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum04-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 363837b614bad810335bbe0c369ca77c24cc87938da6245b414371c201391312 --- 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-b5237d8 [2022-11-22 00:35:58,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:35:58,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:35:58,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:35:58,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:35:58,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:35:58,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:35:58,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:35:58,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:35:58,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:35:58,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:35:58,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:35:58,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:35:58,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:35:58,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:35:58,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:35:58,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:35:58,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:35:58,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:35:58,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:35:58,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:35:58,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:35:58,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:35:58,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:35:58,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:35:58,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:35:58,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:35:58,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:35:58,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:35:58,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:35:58,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:35:58,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:35:58,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:35:58,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:35:58,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:35:58,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:35:58,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:35:58,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:35:58,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:35:58,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:35:58,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:35:58,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:35:58,434 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:35:58,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:35:58,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:35:58,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:35:58,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:35:58,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:35:58,437 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:35:58,437 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:35:58,437 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:35:58,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:35:58,438 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:35:58,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:35:58,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:35:58,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:35:58,439 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:35:58,439 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:35:58,439 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:35:58,439 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:35:58,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:35:58,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:35:58,441 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:35:58,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:35:58,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:35:58,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:35:58,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:35:58,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:35:58,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:35:58,442 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:35:58,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:35:58,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:35:58,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:35:58,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:35:58,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:35:58,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:35:58,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:35:58,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:35:58,444 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:35:58,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:35:58,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:35:58,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:35:58,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:35:58,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:35:58,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:35:58,446 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_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 363837b614bad810335bbe0c369ca77c24cc87938da6245b414371c201391312 [2022-11-22 00:35:58,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:35:58,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:35:58,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:35:58,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:35:58,791 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:35:58,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/loops/sum04-1.i [2022-11-22 00:36:01,748 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:36:01,980 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:36:01,981 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/sv-benchmarks/c/loops/sum04-1.i [2022-11-22 00:36:01,987 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/data/9e5a5a12d/85bba56da1c94bd2b9a78815c8538c42/FLAGb0e689ebc [2022-11-22 00:36:02,002 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/data/9e5a5a12d/85bba56da1c94bd2b9a78815c8538c42 [2022-11-22 00:36:02,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:36:02,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:36:02,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:36:02,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:36:02,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:36:02,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad14f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02, skipping insertion in model container [2022-11-22 00:36:02,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:36:02,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:36:02,212 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/sv-benchmarks/c/loops/sum04-1.i[808,821] [2022-11-22 00:36:02,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:36:02,233 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:36:02,248 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/sv-benchmarks/c/loops/sum04-1.i[808,821] [2022-11-22 00:36:02,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:36:02,264 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:36:02,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02 WrapperNode [2022-11-22 00:36:02,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:36:02,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:36:02,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:36:02,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:36:02,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,297 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-11-22 00:36:02,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:36:02,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:36:02,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:36:02,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:36:02,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:36:02,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:36:02,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:36:02,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:36:02,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (1/1) ... [2022-11-22 00:36:02,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:36:02,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:02,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:36:02,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:36:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:36:02,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:36:02,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:36:02,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:36:02,474 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:36:02,476 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:36:02,583 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:36:02,610 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:36:02,611 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:36:02,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:36:02 BoogieIcfgContainer [2022-11-22 00:36:02,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:36:02,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:36:02,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:36:02,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:36:02,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:36:02" (1/3) ... [2022-11-22 00:36:02,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaec6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:36:02, skipping insertion in model container [2022-11-22 00:36:02,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:36:02" (2/3) ... [2022-11-22 00:36:02,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eaec6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:36:02, skipping insertion in model container [2022-11-22 00:36:02,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:36:02" (3/3) ... [2022-11-22 00:36:02,623 INFO L112 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2022-11-22 00:36:02,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:36:02,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 00:36:02,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:36:02,696 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;@4fca92a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:36:02,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-22 00:36:02,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:36:02,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:02,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:36:02,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2274143, now seen corresponding path program 1 times [2022-11-22 00:36:02,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024588698] [2022-11-22 00:36:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:02,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:02,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:02,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024588698] [2022-11-22 00:36:02,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024588698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:02,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:02,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:36:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737163787] [2022-11-22 00:36:02,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:02,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:36:02,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:36:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:36:03,013 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:03,070 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-11-22 00:36:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:36:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 00:36:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:03,080 INFO L225 Difference]: With dead ends: 25 [2022-11-22 00:36:03,080 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 00:36:03,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:36:03,086 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:03,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:36:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 00:36:03,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-11-22 00:36:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-22 00:36:03,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 4 [2022-11-22 00:36:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:03,118 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-22 00:36:03,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-22 00:36:03,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:36:03,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:03,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:36:03,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:36:03,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:03,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash 70504438, now seen corresponding path program 1 times [2022-11-22 00:36:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:03,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738987500] [2022-11-22 00:36:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:03,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:03,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738987500] [2022-11-22 00:36:03,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738987500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:03,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:03,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:36:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049084059] [2022-11-22 00:36:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:36:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:36:03,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:36:03,190 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:03,218 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-11-22 00:36:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:36:03,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:36:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:03,225 INFO L225 Difference]: With dead ends: 39 [2022-11-22 00:36:03,225 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 00:36:03,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:36:03,227 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:03,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:36:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 00:36:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-11-22 00:36:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-22 00:36:03,246 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 5 [2022-11-22 00:36:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:03,247 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-22 00:36:03,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-22 00:36:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:36:03,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:03,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:03,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:36:03,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash -970435822, now seen corresponding path program 1 times [2022-11-22 00:36:03,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:03,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009417518] [2022-11-22 00:36:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:03,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:03,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009417518] [2022-11-22 00:36:03,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009417518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:03,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:03,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:36:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462051365] [2022-11-22 00:36:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:03,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:36:03,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:36:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:36:03,361 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:03,400 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-22 00:36:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:36:03,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 00:36:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:03,401 INFO L225 Difference]: With dead ends: 21 [2022-11-22 00:36:03,401 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 00:36:03,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:36:03,403 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:03,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:36:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 00:36:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 00:36:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-22 00:36:03,409 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2022-11-22 00:36:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:03,410 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-22 00:36:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-22 00:36:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:36:03,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:03,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:03,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:36:03,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:03,413 INFO L85 PathProgramCache]: Analyzing trace with hash 81663493, now seen corresponding path program 1 times [2022-11-22 00:36:03,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:03,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360935663] [2022-11-22 00:36:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:03,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:03,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360935663] [2022-11-22 00:36:03,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360935663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:03,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258260626] [2022-11-22 00:36:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:03,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:03,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:03,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:03,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:36:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:03,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:36:03,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:03,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:03,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258260626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:03,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353503725] [2022-11-22 00:36:03,743 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:36:03,744 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:03,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:03,755 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:03,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:04,304 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:05,136 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '248#(and (< 2147483645 |ULTIMATE.start_main_~sn~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| 4) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:05,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:05,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:36:05,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-22 00:36:05,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899905190] [2022-11-22 00:36:05,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:05,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:36:05,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:36:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-22 00:36:05,140 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:05,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:05,184 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-11-22 00:36:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:36:05,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 00:36:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:05,187 INFO L225 Difference]: With dead ends: 46 [2022-11-22 00:36:05,187 INFO L226 Difference]: Without dead ends: 45 [2022-11-22 00:36:05,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-22 00:36:05,190 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:05,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 49 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:36:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-22 00:36:05,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2022-11-22 00:36:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.457142857142857) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2022-11-22 00:36:05,198 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 11 [2022-11-22 00:36:05,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:05,199 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2022-11-22 00:36:05,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2022-11-22 00:36:05,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 00:36:05,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:05,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:05,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:05,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:05,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1763393008, now seen corresponding path program 1 times [2022-11-22 00:36:05,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:05,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664771033] [2022-11-22 00:36:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:05,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:05,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:05,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664771033] [2022-11-22 00:36:05,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664771033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:05,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191471003] [2022-11-22 00:36:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:05,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:05,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:36:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:05,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 00:36:05,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:05,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:05,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191471003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:05,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [797813504] [2022-11-22 00:36:05,670 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:36:05,670 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:05,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:05,671 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:05,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:06,102 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:06,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [797813504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:06,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:36:06,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 15 [2022-11-22 00:36:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635323481] [2022-11-22 00:36:06,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:06,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:36:06,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:36:06,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:36:06,756 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:07,026 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2022-11-22 00:36:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:36:07,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 00:36:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:07,027 INFO L225 Difference]: With dead ends: 48 [2022-11-22 00:36:07,027 INFO L226 Difference]: Without dead ends: 45 [2022-11-22 00:36:07,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:36:07,029 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:07,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:36:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-22 00:36:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2022-11-22 00:36:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-22 00:36:07,037 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 12 [2022-11-22 00:36:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:07,038 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-22 00:36:07,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-22 00:36:07,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-22 00:36:07,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:07,039 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1] [2022-11-22 00:36:07,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 00:36:07,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:07,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash -173066785, now seen corresponding path program 2 times [2022-11-22 00:36:07,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:07,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773275759] [2022-11-22 00:36:07,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:07,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:07,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:07,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773275759] [2022-11-22 00:36:07,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773275759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:07,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822041662] [2022-11-22 00:36:07,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:36:07,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:07,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:07,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:36:07,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 00:36:07,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:07,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 00:36:07,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:07,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:36:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:07,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822041662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:36:07,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [424046846] [2022-11-22 00:36:07,693 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 00:36:07,694 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:36:07,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:36:07,695 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:36:07,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:36:07,937 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:36:08,680 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '729#(and (< 2147483645 |ULTIMATE.start_main_~sn~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| 4) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:36:08,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:36:08,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:36:08,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-22 00:36:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078809089] [2022-11-22 00:36:08,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:36:08,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 00:36:08,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 00:36:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:36:08,683 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:08,752 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2022-11-22 00:36:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:36:08,753 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-22 00:36:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:08,754 INFO L225 Difference]: With dead ends: 76 [2022-11-22 00:36:08,754 INFO L226 Difference]: Without dead ends: 75 [2022-11-22 00:36:08,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-11-22 00:36:08,756 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:08,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 67 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:36:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-22 00:36:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-22 00:36:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2022-11-22 00:36:08,769 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 32 [2022-11-22 00:36:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:08,769 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2022-11-22 00:36:08,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2022-11-22 00:36:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 00:36:08,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:08,772 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1] [2022-11-22 00:36:08,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:08,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 00:36:08,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 00:36:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1565847137, now seen corresponding path program 3 times [2022-11-22 00:36:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:08,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356532648] [2022-11-22 00:36:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:08,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:09,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356532648] [2022-11-22 00:36:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356532648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:36:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484860535] [2022-11-22 00:36:09,273 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:36:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:36:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:36:09,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:36:09,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:36:09,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:36:09,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:36:09,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 00:36:09,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:36:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-22 00:36:09,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:36:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484860535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:36:09,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 19 [2022-11-22 00:36:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14458778] [2022-11-22 00:36:09,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:09,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:36:09,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:09,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:36:09,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:36:09,515 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:09,611 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2022-11-22 00:36:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 00:36:09,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-22 00:36:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:09,612 INFO L225 Difference]: With dead ends: 102 [2022-11-22 00:36:09,612 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:36:09,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2022-11-22 00:36:09,615 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:09,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:36:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:36:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:36:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:36:09,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2022-11-22 00:36:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:09,619 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:36:09,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:36:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:36:09,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:36:09,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-22 00:36:09,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-22 00:36:09,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-22 00:36:09,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-22 00:36:09,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:36:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 00:36:09,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 00:36:10,083 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 26) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-22 00:36:10,084 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-11-22 00:36:10,085 INFO L899 garLoopResultBuilder]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2022-11-22 00:36:10,085 INFO L899 garLoopResultBuilder]: For program point L24-3(line 24) no Hoare annotation was computed. [2022-11-22 00:36:10,085 INFO L899 garLoopResultBuilder]: For program point L24-4(line 24) no Hoare annotation was computed. [2022-11-22 00:36:10,085 INFO L895 garLoopResultBuilder]: At program point L24-5(lines 24 27) the Hoare annotation is: (let ((.cse0 (let ((.cse1 (= |#NULL.offset| 0)) (.cse3 (= |#NULL.base| 0))) (or (let ((.cse2 (select |#memory_int| 1))) (and (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start_main_~sn~0#1| 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) .cse1 (= (select .cse2 0) 48) (= 10 (select |#length| 2)) (= (select .cse2 1) 0) (< 0 |#StackHeapBarrier|) .cse3)) (and (<= 2 |ULTIMATE.start_main_~sn~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|) .cse1 (<= 0 |#StackHeapBarrier|) .cse3))))) (or (and (<= 4 |ULTIMATE.start_main_~i~0#1|) .cse0 (<= |ULTIMATE.start_main_~sn~0#1| 6)) (and (<= |ULTIMATE.start_main_~sn~0#1| 4) (<= 3 |ULTIMATE.start_main_~i~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~sn~0#1| 2) .cse0))) [2022-11-22 00:36:10,091 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-11-22 00:36:10,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:36:10,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:36:10 BoogieIcfgContainer [2022-11-22 00:36:10,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:36:10,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:36:10,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:36:10,136 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:36:10,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:36:02" (3/4) ... [2022-11-22 00:36:10,142 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 00:36:10,153 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-22 00:36:10,154 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-22 00:36:10,154 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 00:36:10,155 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 00:36:10,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:36:10,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:36:10,198 INFO L158 Benchmark]: Toolchain (without parser) took 8192.67ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 124.1MB in the beginning and 113.4MB in the end (delta: 10.7MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2022-11-22 00:36:10,199 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 93.3MB in the beginning and 93.2MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:36:10,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.57ms. Allocated memory is still 155.2MB. Free memory was 124.1MB in the beginning and 125.8MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 00:36:10,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.62ms. Allocated memory is still 155.2MB. Free memory was 125.8MB in the beginning and 124.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:36:10,200 INFO L158 Benchmark]: Boogie Preprocessor took 18.87ms. Allocated memory is still 155.2MB. Free memory was 123.7MB in the beginning and 123.1MB in the end (delta: 597.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:36:10,201 INFO L158 Benchmark]: RCFGBuilder took 295.83ms. Allocated memory is still 155.2MB. Free memory was 123.1MB in the beginning and 111.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:36:10,201 INFO L158 Benchmark]: TraceAbstraction took 7519.74ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 111.1MB in the beginning and 115.5MB in the end (delta: -4.4MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-11-22 00:36:10,202 INFO L158 Benchmark]: Witness Printer took 61.61ms. Allocated memory is still 186.6MB. Free memory was 115.5MB in the beginning and 113.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:36:10,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 93.3MB in the beginning and 93.2MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.57ms. Allocated memory is still 155.2MB. Free memory was 124.1MB in the beginning and 125.8MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.62ms. Allocated memory is still 155.2MB. Free memory was 125.8MB in the beginning and 124.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.87ms. Allocated memory is still 155.2MB. Free memory was 123.7MB in the beginning and 123.1MB in the end (delta: 597.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.83ms. Allocated memory is still 155.2MB. Free memory was 123.1MB in the beginning and 111.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7519.74ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 111.1MB in the beginning and 115.5MB in the end (delta: -4.4MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Witness Printer took 61.61ms. Allocated memory is still 186.6MB. Free memory was 115.5MB in the beginning and 113.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 115 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 145 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 48 mSDtfsCounter, 179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=6, InterpolantAutomatonStates: 50, 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, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 7 NumberOfFragments, 235 HoareAnnotationTreeSize, 1 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 243 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 829 SizeOfPredicates, 4 NumberOfNonLiveVariables, 306 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 351/873 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 40, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 40, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 57, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 13, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 231, DAG_COMPRESSION_RETAINED_NODES: 39, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((4 <= i && ((((((((((((2 == unknown-#length-unknown[1] && i == 1) && sn == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 10 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((2 <= sn && 2 <= i) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0))) && sn <= 6) || ((sn <= 4 && 3 <= i) && ((((((((((((2 == unknown-#length-unknown[1] && i == 1) && sn == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 10 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((2 <= sn && 2 <= i) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)))) || (sn <= 2 && ((((((((((((2 == unknown-#length-unknown[1] && i == 1) && sn == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && 10 == unknown-#length-unknown[2]) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((2 <= sn && 2 <= i) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0))) RESULT: Ultimate proved your program to be correct! [2022-11-22 00:36:10,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012ca759-84c0-4afd-b4ad-3b4b768ea661/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE