./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/mea8000.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/mea8000.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta --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 cd44d90aed9d2d04077d2b748267e187447c04398d91bc61f6043a9ae8c38324 --- 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-dbf71c6-m [2022-10-17 17:20:59,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:20:59,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:20:59,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:20:59,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:20:59,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:20:59,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:20:59,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:20:59,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:20:59,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:20:59,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:20:59,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:20:59,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:20:59,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:20:59,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:20:59,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:20:59,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:20:59,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:20:59,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:20:59,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:20:59,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:20:59,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:20:59,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:20:59,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:20:59,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:20:59,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:20:59,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:20:59,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:20:59,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:20:59,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:20:59,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:20:59,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:20:59,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:20:59,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:20:59,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:20:59,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:20:59,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:20:59,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:20:59,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:20:59,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:20:59,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:20:59,435 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:20:59,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:20:59,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:20:59,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:20:59,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:20:59,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:20:59,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:20:59,504 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:20:59,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:20:59,505 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:20:59,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:20:59,506 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:20:59,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:20:59,507 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:20:59,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:20:59,507 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:20:59,508 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:20:59,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:20:59,508 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:20:59,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:20:59,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:20:59,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:20:59,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:20:59,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:20:59,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:20:59,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:20:59,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:20:59,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:20:59,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:20:59,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:20:59,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:20:59,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:20:59,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:20:59,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:20:59,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:20:59,516 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:20:59,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:20:59,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:20:59,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:20:59,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:20:59,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:20:59,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:20:59,517 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_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd44d90aed9d2d04077d2b748267e187447c04398d91bc61f6043a9ae8c38324 [2022-10-17 17:20:59,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:20:59,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:20:59,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:20:59,954 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:20:59,955 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:20:59,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-benchs/mea8000.c [2022-10-17 17:21:00,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/data/b93f8d17a/7c525a40e7a9450b915a13bd7b0ed577/FLAG24e0f96c1 [2022-10-17 17:21:00,627 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:21:00,629 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/sv-benchmarks/c/float-benchs/mea8000.c [2022-10-17 17:21:00,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/data/b93f8d17a/7c525a40e7a9450b915a13bd7b0ed577/FLAG24e0f96c1 [2022-10-17 17:21:00,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/data/b93f8d17a/7c525a40e7a9450b915a13bd7b0ed577 [2022-10-17 17:21:00,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:21:00,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:21:00,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:00,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:21:00,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:21:00,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:00" (1/1) ... [2022-10-17 17:21:00,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e07fad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:00, skipping insertion in model container [2022-10-17 17:21:00,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:00" (1/1) ... [2022-10-17 17:21:00,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:21:01,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:21:01,301 WARN L230 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_dc7ffddc-6509-4137-9298-08a3f3ddf848/sv-benchmarks/c/float-benchs/mea8000.c[649,662] [2022-10-17 17:21:01,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:01,496 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:21:01,511 WARN L230 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_dc7ffddc-6509-4137-9298-08a3f3ddf848/sv-benchmarks/c/float-benchs/mea8000.c[649,662] [2022-10-17 17:21:01,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:01,622 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:21:01,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01 WrapperNode [2022-10-17 17:21:01,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:01,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:01,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:21:01,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:21:01,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,729 INFO L138 Inliner]: procedures = 39, calls = 238, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 446 [2022-10-17 17:21:01,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:01,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:21:01,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:21:01,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:21:01,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:21:01,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:21:01,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:21:01,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:21:01,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (1/1) ... [2022-10-17 17:21:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:01,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:01,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:21:01,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:21:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:21:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write_signed16 [2022-10-17 17:21:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure write_signed16 [2022-10-17 17:21:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure cos [2022-10-17 17:21:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure cos [2022-10-17 17:21:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure update_req [2022-10-17 17:21:01,985 INFO L138 BoogieDeclarations]: Found implementation of procedure update_req [2022-10-17 17:21:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 17:21:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:21:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 17:21:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:21:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_char [2022-10-17 17:21:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure exp [2022-10-17 17:21:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure exp [2022-10-17 17:21:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure interp [2022-10-17 17:21:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure interp [2022-10-17 17:21:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure start_frame [2022-10-17 17:21:01,986 INFO L138 BoogieDeclarations]: Found implementation of procedure start_frame [2022-10-17 17:21:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:21:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:21:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:21:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure shift_frame [2022-10-17 17:21:01,987 INFO L138 BoogieDeclarations]: Found implementation of procedure shift_frame [2022-10-17 17:21:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure decode_frame [2022-10-17 17:21:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_frame [2022-10-17 17:21:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:21:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:21:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure stop_frame [2022-10-17 17:21:01,989 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_frame [2022-10-17 17:21:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:21:01,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:21:02,147 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:21:02,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:21:03,163 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:21:03,442 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:21:03,442 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 17:21:03,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:03 BoogieIcfgContainer [2022-10-17 17:21:03,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:21:03,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:21:03,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:21:03,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:21:03,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:21:00" (1/3) ... [2022-10-17 17:21:03,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cb9c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:03, skipping insertion in model container [2022-10-17 17:21:03,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:01" (2/3) ... [2022-10-17 17:21:03,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cb9c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:03, skipping insertion in model container [2022-10-17 17:21:03,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:03" (3/3) ... [2022-10-17 17:21:03,458 INFO L112 eAbstractionObserver]: Analyzing ICFG mea8000.c [2022-10-17 17:21:03,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:21:03,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:21:03,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:21:03,554 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;@10fa19b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:21:03,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:21:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 73 states have internal predecessors, (90), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2022-10-17 17:21:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:21:03,572 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:03,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:03,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1461124322, now seen corresponding path program 1 times [2022-10-17 17:21:03,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:03,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419976782] [2022-10-17 17:21:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:04,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:04,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419976782] [2022-10-17 17:21:04,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419976782] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:04,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:04,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:21:04,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134686095] [2022-10-17 17:21:04,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:04,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:04,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:04,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:04,072 INFO L87 Difference]: Start difference. First operand has 107 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 73 states have internal predecessors, (90), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:04,358 INFO L93 Difference]: Finished difference Result 212 states and 314 transitions. [2022-10-17 17:21:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:21:04,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-17 17:21:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:04,378 INFO L225 Difference]: With dead ends: 212 [2022-10-17 17:21:04,378 INFO L226 Difference]: Without dead ends: 113 [2022-10-17 17:21:04,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:04,389 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 3 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:04,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 251 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:21:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-10-17 17:21:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2022-10-17 17:21:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 64 states have (on average 1.390625) internal successors, (89), 73 states have internal predecessors, (89), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2022-10-17 17:21:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 151 transitions. [2022-10-17 17:21:04,445 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 151 transitions. Word has length 15 [2022-10-17 17:21:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:04,446 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 151 transitions. [2022-10-17 17:21:04,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:21:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 151 transitions. [2022-10-17 17:21:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-17 17:21:04,449 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:04,449 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:04,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:21:04,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:04,463 INFO L85 PathProgramCache]: Analyzing trace with hash 176071477, now seen corresponding path program 1 times [2022-10-17 17:21:04,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:04,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100005982] [2022-10-17 17:21:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:04,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 17:21:04,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:04,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100005982] [2022-10-17 17:21:04,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100005982] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:21:04,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262370380] [2022-10-17 17:21:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:04,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:04,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:21:04,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:21:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:05,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:21:05,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:21:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:21:05,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:21:05,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262370380] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:05,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:21:05,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 17:21:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830338849] [2022-10-17 17:21:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:21:05,081 INFO L87 Difference]: Start difference. First operand 107 states and 151 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:21:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:05,326 INFO L93 Difference]: Finished difference Result 205 states and 289 transitions. [2022-10-17 17:21:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:21:05,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-10-17 17:21:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:05,329 INFO L225 Difference]: With dead ends: 205 [2022-10-17 17:21:05,329 INFO L226 Difference]: Without dead ends: 108 [2022-10-17 17:21:05,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:21:05,332 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:05,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:21:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-10-17 17:21:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-10-17 17:21:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 74 states have internal predecessors, (90), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2022-10-17 17:21:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 152 transitions. [2022-10-17 17:21:05,365 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 152 transitions. Word has length 42 [2022-10-17 17:21:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:05,366 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-10-17 17:21:05,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:21:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 152 transitions. [2022-10-17 17:21:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-17 17:21:05,372 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:05,372 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:05,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:21:05,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:05,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash -409390264, now seen corresponding path program 1 times [2022-10-17 17:21:05,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:05,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831928332] [2022-10-17 17:21:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:21:05,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:05,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831928332] [2022-10-17 17:21:05,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831928332] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:21:05,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851022679] [2022-10-17 17:21:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:05,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:05,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:05,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:21:05,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:21:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:05,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:21:05,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:21:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-17 17:21:06,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:21:06,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851022679] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:06,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:21:06,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-10-17 17:21:06,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117221627] [2022-10-17 17:21:06,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:06,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:21:06,087 INFO L87 Difference]: Start difference. First operand 108 states and 152 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:21:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:06,330 INFO L93 Difference]: Finished difference Result 264 states and 366 transitions. [2022-10-17 17:21:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:21:06,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-10-17 17:21:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:06,333 INFO L225 Difference]: With dead ends: 264 [2022-10-17 17:21:06,333 INFO L226 Difference]: Without dead ends: 167 [2022-10-17 17:21:06,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:21:06,336 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 61 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:06,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 256 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:21:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-10-17 17:21:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2022-10-17 17:21:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 110 states have internal predecessors, (134), 43 states have call successors, (43), 20 states have call predecessors, (43), 19 states have return successors, (43), 35 states have call predecessors, (43), 43 states have call successors, (43) [2022-10-17 17:21:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 220 transitions. [2022-10-17 17:21:06,358 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 220 transitions. Word has length 43 [2022-10-17 17:21:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:06,359 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 220 transitions. [2022-10-17 17:21:06,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 17:21:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 220 transitions. [2022-10-17 17:21:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 17:21:06,361 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:06,361 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:06,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:21:06,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:06,582 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -635089898, now seen corresponding path program 1 times [2022-10-17 17:21:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:06,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763522382] [2022-10-17 17:21:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:06,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:21:06,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763522382] [2022-10-17 17:21:06,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763522382] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:21:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527824753] [2022-10-17 17:21:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:06,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:21:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:06,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:21:06,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc7ffddc-6509-4137-9298-08a3f3ddf848/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:21:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:06,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:21:06,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:21:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:21:07,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:21:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:21:07,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527824753] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:21:07,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1666120266] [2022-10-17 17:21:07,089 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-10-17 17:21:07,090 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:21:07,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:21:07,100 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:21:07,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:21:07,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 53 [2022-10-17 17:21:07,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6