./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/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_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b89d5a1db28cdbe10153d7e75038bff16b1343640a8d05a90f6e5bdf82eae94a --- 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 01:24:11,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:24:11,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:24:11,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:24:11,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:24:11,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:24:11,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:24:11,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:24:11,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:24:11,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:24:11,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:24:11,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:24:11,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:24:11,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:24:11,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:24:11,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:24:11,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:24:11,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:24:11,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:24:11,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:24:11,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:24:11,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:24:11,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:24:11,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:24:11,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:24:11,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:24:11,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:24:11,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:24:11,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:24:11,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:24:11,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:24:11,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:24:11,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:24:11,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:24:11,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:24:11,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:24:11,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:24:11,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:24:11,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:24:11,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:24:11,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:24:11,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:24:11,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:24:11,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:24:11,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:24:11,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:24:11,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:24:11,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:24:11,300 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:24:11,300 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:24:11,300 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:24:11,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:24:11,301 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:24:11,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:24:11,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:24:11,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:24:11,302 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:24:11,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:24:11,303 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:24:11,303 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:24:11,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:24:11,304 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:24:11,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:24:11,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:24:11,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:24:11,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:24:11,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:24:11,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:24:11,307 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:24:11,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:24:11,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:24:11,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:24:11,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:24:11,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:24:11,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:24:11,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:24:11,310 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:24:11,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:24:11,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:24:11,311 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:24:11,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:24:11,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:24:11,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:24:11,312 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_72c92eec-955b-431b-b4fe-020dd7a6b729/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b89d5a1db28cdbe10153d7e75038bff16b1343640a8d05a90f6e5bdf82eae94a [2022-11-22 01:24:11,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:24:11,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:24:11,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:24:11,681 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:24:11,681 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:24:11,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2022-11-22 01:24:14,819 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:24:14,994 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:24:14,995 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2022-11-22 01:24:15,001 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/data/3e0aed611/ae9ef1ead2064b18a24a3c3f0b5dc406/FLAGadb208448 [2022-11-22 01:24:15,016 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/data/3e0aed611/ae9ef1ead2064b18a24a3c3f0b5dc406 [2022-11-22 01:24:15,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:24:15,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:24:15,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:24:15,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:24:15,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:24:15,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641a82c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15, skipping insertion in model container [2022-11-22 01:24:15,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:24:15,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:24:15,260 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_72c92eec-955b-431b-b4fe-020dd7a6b729/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2022-11-22 01:24:15,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:24:15,295 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:24:15,311 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_72c92eec-955b-431b-b4fe-020dd7a6b729/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2022-11-22 01:24:15,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:24:15,344 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:24:15,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15 WrapperNode [2022-11-22 01:24:15,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:24:15,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:24:15,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:24:15,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:24:15,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,388 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-22 01:24:15,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:24:15,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:24:15,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:24:15,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:24:15,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,420 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:24:15,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:24:15,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:24:15,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:24:15,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (1/1) ... [2022-11-22 01:24:15,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:24:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:24:15,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:24:15,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:24:15,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:24:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:24:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:24:15,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:24:15,599 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:24:15,602 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:24:15,793 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:24:15,837 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:24:15,838 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-22 01:24:15,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:24:15 BoogieIcfgContainer [2022-11-22 01:24:15,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:24:15,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:24:15,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:24:15,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:24:15,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:24:15" (1/3) ... [2022-11-22 01:24:15,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357666ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:24:15, skipping insertion in model container [2022-11-22 01:24:15,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:24:15" (2/3) ... [2022-11-22 01:24:15,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357666ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:24:15, skipping insertion in model container [2022-11-22 01:24:15,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:24:15" (3/3) ... [2022-11-22 01:24:15,851 INFO L112 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2022-11-22 01:24:15,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:24:15,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:24:15,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:24:15,931 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;@702de511, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:24:15,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:24:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:15,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:24:15,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:15,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:15,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:15,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1937423035, now seen corresponding path program 1 times [2022-11-22 01:24:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:15,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524689008] [2022-11-22 01:24:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:15,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:16,336 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 01:24:16,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:16,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524689008] [2022-11-22 01:24:16,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524689008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:16,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:24:16,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:24:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172687426] [2022-11-22 01:24:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:16,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:24:16,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:24:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:24:16,377 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:16,507 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2022-11-22 01:24:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:24:16,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:24:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:16,517 INFO L225 Difference]: With dead ends: 27 [2022-11-22 01:24:16,524 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 01:24:16,527 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 01:24:16,530 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:16,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:24:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 01:24:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2022-11-22 01:24:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2022-11-22 01:24:16,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 8 [2022-11-22 01:24:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:16,592 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-11-22 01:24:16,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2022-11-22 01:24:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:24:16,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:16,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:16,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:24:16,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash -69687538, now seen corresponding path program 1 times [2022-11-22 01:24:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299523626] [2022-11-22 01:24:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:16,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:16,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:16,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299523626] [2022-11-22 01:24:16,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299523626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:24:16,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678121570] [2022-11-22 01:24:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:16,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:24:16,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:24:16,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:24:16,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:24:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:16,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 01:24:16,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:24:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:17,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:24:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:17,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678121570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:24:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [554086430] [2022-11-22 01:24:17,093 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:24:17,093 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:24:17,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:24:17,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:24:17,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:24:17,360 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:24:17,950 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '136#(and (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (not (< (mod |ULTIMATE.start_main_~v~0#1| 4294967296) 10)) (<= |ULTIMATE.start_main_~w~0#1| 0) (= (ite (<= (mod (mod |ULTIMATE.start_main_~v~0#1| 4) 4294967296) 2147483647) (mod (mod |ULTIMATE.start_main_~v~0#1| 4) 4294967296) (+ (mod (mod |ULTIMATE.start_main_~v~0#1| 4) 4294967296) (- 4294967296))) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= |#NULL.base| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~v~0#1|) (<= 0 |ULTIMATE.start_main_~w~0#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2022-11-22 01:24:17,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:24:17,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:24:17,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2022-11-22 01:24:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186931270] [2022-11-22 01:24:17,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:24:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:24:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:24:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:24:17,954 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:18,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:18,243 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2022-11-22 01:24:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:24:18,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:24:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:18,246 INFO L225 Difference]: With dead ends: 45 [2022-11-22 01:24:18,246 INFO L226 Difference]: Without dead ends: 35 [2022-11-22 01:24:18,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:24:18,248 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:18,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 44 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:24:18,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-22 01:24:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 15. [2022-11-22 01:24:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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 01:24:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2022-11-22 01:24:18,261 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 9 [2022-11-22 01:24:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:18,262 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-11-22 01:24:18,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2022-11-22 01:24:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:24:18,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:24:18,264 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:24:18,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:24:18,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:24:18,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:24:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:24:18,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1849903237, now seen corresponding path program 2 times [2022-11-22 01:24:18,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:24:18,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056741263] [2022-11-22 01:24:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:24:18,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:24:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:24:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:24:18,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:24:18,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056741263] [2022-11-22 01:24:18,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056741263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:24:18,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207669425] [2022-11-22 01:24:18,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:24:18,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:24:18,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:24:18,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:24:18,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:24:18,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:24:18,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:24:18,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 01:24:18,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:24:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:24:19,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:24:19,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207669425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:19,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:24:19,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-22 01:24:19,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755092897] [2022-11-22 01:24:19,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:19,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:24:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:19,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:24:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:24:19,269 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:24:19,467 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2022-11-22 01:24:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:24:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 01:24:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:24:19,469 INFO L225 Difference]: With dead ends: 24 [2022-11-22 01:24:19,469 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:24:19,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:24:19,471 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:24:19,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:24:19,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:24:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:24:19,472 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 01:24:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:24:19,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-22 01:24:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:24:19,473 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:24:19,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:24:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:24:19,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:24:19,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:24:19,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:24:19,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:24:19,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:24:19,894 INFO L895 garLoopResultBuilder]: At program point L23-3(line 23) the Hoare annotation is: (or (< (mod (+ 4294967295 |ULTIMATE.start_main_~v~0#1|) 4294967296) 10) (= |ULTIMATE.start_main_~v~0#1| 0)) [2022-11-22 01:24:19,894 INFO L895 garLoopResultBuilder]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (= |ULTIMATE.start_main_~v~0#1| 0)) [2022-11-22 01:24:19,894 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-22 01:24:19,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:24:19,894 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-11-22 01:24:19,895 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (= |ULTIMATE.start_main_~v~0#1| 0)) [2022-11-22 01:24:19,895 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:24:19,895 INFO L895 garLoopResultBuilder]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (= |ULTIMATE.start_main_~v~0#1| 0)) [2022-11-22 01:24:19,895 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 25) the Hoare annotation is: (or (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (= |ULTIMATE.start_main_~v~0#1| 0)) [2022-11-22 01:24:19,895 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-11-22 01:24:19,896 INFO L895 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (and (<= (let ((.cse0 (- |ULTIMATE.start___VERIFIER_assert_~cond#1|))) (+ |ULTIMATE.start___VERIFIER_assert_~cond#1| (* 4 (div .cse0 4)) (* 4294967296 (div (+ |ULTIMATE.start___VERIFIER_assert_~cond#1| (* (div (+ 4294967305 .cse0) 4) 4) (- 7)) 4294967296)))) 4294967291) (< |ULTIMATE.start___VERIFIER_assert_~cond#1| 4294967296) (< (mod (+ 4294967295 |ULTIMATE.start_main_~v~0#1|) 4294967296) 10) (<= 0 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (exists ((|aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172| Int)) (let ((.cse2 (* |aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69| 4)) (.cse1 (+ |ULTIMATE.start___VERIFIER_assert_~cond#1| (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172| 4294967296)))) (and (<= 0 .cse1) (< .cse1 (+ .cse2 4)) (< .cse1 4) (<= .cse2 .cse1))))) [2022-11-22 01:24:19,900 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-22 01:24:19,902 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:24:19,922 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,923 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,923 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,923 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,924 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,924 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,925 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,926 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,926 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,926 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,927 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,928 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:24:19 BoogieIcfgContainer [2022-11-22 01:24:19,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:24:19,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:24:19,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:24:19,931 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:24:19,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:24:15" (3/4) ... [2022-11-22 01:24:19,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:24:19,944 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-22 01:24:19,945 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-22 01:24:19,945 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 01:24:19,945 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:24:19,971 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((cond + 4 * (-cond / 4) + 4294967296 * ((cond + (4294967305 + -cond) / 4 * 4 + -7) / 4294967296) <= 4294967291 && cond < 4294967296) && (4294967295 + v) % 4294967296 < 10) && 0 <= cond) && (\exists aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69 : int, aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 : int :: ((0 <= cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296 && cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296 < aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69 * 4 + 4) && cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296 < 4) && aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69 * 4 <= cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296) [2022-11-22 01:24:19,980 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:24:19,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:24:19,981 INFO L158 Benchmark]: Toolchain (without parser) took 4961.49ms. Allocated memory is still 195.0MB. Free memory was 150.6MB in the beginning and 81.8MB in the end (delta: 68.8MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2022-11-22 01:24:19,981 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:24:19,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.77ms. Allocated memory is still 195.0MB. Free memory was 150.6MB in the beginning and 140.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:24:19,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.33ms. Allocated memory is still 195.0MB. Free memory was 140.1MB in the beginning and 138.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:24:19,982 INFO L158 Benchmark]: Boogie Preprocessor took 39.81ms. Allocated memory is still 195.0MB. Free memory was 138.6MB in the beginning and 137.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:24:19,983 INFO L158 Benchmark]: RCFGBuilder took 410.37ms. Allocated memory is still 195.0MB. Free memory was 137.4MB in the beginning and 124.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 01:24:19,983 INFO L158 Benchmark]: TraceAbstraction took 4086.68ms. Allocated memory is still 195.0MB. Free memory was 124.4MB in the beginning and 83.9MB in the end (delta: 40.5MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2022-11-22 01:24:19,983 INFO L158 Benchmark]: Witness Printer took 49.41ms. Allocated memory is still 195.0MB. Free memory was 83.9MB in the beginning and 81.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:24:19,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.77ms. Allocated memory is still 195.0MB. Free memory was 150.6MB in the beginning and 140.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.33ms. Allocated memory is still 195.0MB. Free memory was 140.1MB in the beginning and 138.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.81ms. Allocated memory is still 195.0MB. Free memory was 138.6MB in the beginning and 137.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 410.37ms. Allocated memory is still 195.0MB. Free memory was 137.4MB in the beginning and 124.9MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4086.68ms. Allocated memory is still 195.0MB. Free memory was 124.4MB in the beginning and 83.9MB in the end (delta: 40.5MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. * Witness Printer took 49.41ms. Allocated memory is still 195.0MB. Free memory was 83.9MB in the beginning and 81.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] * 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: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 25 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 25 NumberOfFragments, 118 HoareAnnotationTreeSize, 6 FomulaSimplifications, 925 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 312 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 1 QuantifiedInterpolants, 198 SizeOfPredicates, 5 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 10/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: !(cond == 0) || v == 0 - InvariantResult [Line: 5]: Loop Invariant [2022-11-22 01:24:19,995 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,995 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,995 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,995 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,996 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,996 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,996 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,997 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,997 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,997 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] [2022-11-22 01:24:19,997 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69,QUANTIFIED] [2022-11-22 01:24:19,998 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172,QUANTIFIED] Derived loop invariant: (((cond + 4 * (-cond / 4) + 4294967296 * ((cond + (4294967305 + -cond) / 4 * 4 + -7) / 4294967296) <= 4294967291 && cond < 4294967296) && (4294967295 + v) % 4294967296 < 10) && 0 <= cond) && (\exists aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69 : int, aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 : int :: ((0 <= cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296 && cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296 < aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69 * 4 + 4) && cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296 < 4) && aux_div_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69 * 4 <= cond + aux_div_aux_mod_aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~v~0#1_45_71_64_69_172 * 4294967296) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !(cond == 0) || v == 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (4294967295 + v) % 4294967296 < 10 || v == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(cond == 0) || v == 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !(cond == 0) || v == 0 RESULT: Ultimate proved your program to be correct! [2022-11-22 01:24:20,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72c92eec-955b-431b-b4fe-020dd7a6b729/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