./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS --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 ea9100a26486a00b9ae2816f07a2845f21fbc129a32af860679f06a7ef1fa1e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:27:59,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:27:59,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:27:59,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:27:59,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:27:59,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:27:59,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:27:59,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:27:59,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:27:59,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:27:59,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:27:59,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:27:59,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:27:59,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:27:59,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:27:59,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:27:59,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:27:59,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:27:59,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:27:59,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:27:59,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:27:59,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:27:59,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:27:59,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:27:59,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:27:59,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:27:59,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:27:59,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:27:59,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:27:59,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:27:59,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:27:59,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:27:59,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:27:59,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:27:59,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:27:59,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:27:59,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:27:59,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:27:59,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:27:59,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:27:59,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:27:59,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:28:00,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:28:00,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:28:00,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:28:00,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:28:00,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:28:00,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:28:00,029 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:28:00,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:28:00,029 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:28:00,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:28:00,031 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:28:00,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:28:00,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:28:00,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:28:00,032 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:28:00,032 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:28:00,032 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:28:00,032 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:28:00,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:28:00,033 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:28:00,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:28:00,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:28:00,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:28:00,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:28:00,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:28:00,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:28:00,036 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:28:00,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:28:00,037 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:28:00,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:28:00,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:28:00,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:28:00,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:00,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:28:00,038 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:28:00,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:28:00,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:28:00,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:28:00,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:28:00,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:28:00,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:28:00,040 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_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea9100a26486a00b9ae2816f07a2845f21fbc129a32af860679f06a7ef1fa1e4 [2022-11-19 07:28:00,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:28:00,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:28:00,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:28:00,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:28:00,333 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:28:00,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/eca-rers2012/Problem10_label42.c [2022-11-19 07:28:00,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/data/3cb1f3042/91ab8ee013cf4c6b87fe237c3f841307/FLAGa602a61d8 [2022-11-19 07:28:01,034 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:28:01,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/sv-benchmarks/c/eca-rers2012/Problem10_label42.c [2022-11-19 07:28:01,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/data/3cb1f3042/91ab8ee013cf4c6b87fe237c3f841307/FLAGa602a61d8 [2022-11-19 07:28:01,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/data/3cb1f3042/91ab8ee013cf4c6b87fe237c3f841307 [2022-11-19 07:28:01,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:28:01,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:28:01,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:01,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:28:01,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:28:01,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:01,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b94f8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01, skipping insertion in model container [2022-11-19 07:28:01,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:01,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:28:01,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:28:01,599 WARN L234 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_5441871d-5dd9-4a58-b1b3-93e47067e201/sv-benchmarks/c/eca-rers2012/Problem10_label42.c[2177,2190] [2022-11-19 07:28:01,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:01,772 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:28:01,806 WARN L234 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_5441871d-5dd9-4a58-b1b3-93e47067e201/sv-benchmarks/c/eca-rers2012/Problem10_label42.c[2177,2190] [2022-11-19 07:28:01,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:01,946 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:28:01,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01 WrapperNode [2022-11-19 07:28:01,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:01,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:01,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:28:01,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:28:01,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:01,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,058 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2022-11-19 07:28:02,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:02,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:28:02,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:28:02,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:28:02,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:28:02,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:28:02,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:28:02,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:28:02,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (1/1) ... [2022-11-19 07:28:02,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:02,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:02,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:28:02,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:28:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:28:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:28:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:28:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:28:02,360 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:28:02,362 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:28:03,546 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:28:06,223 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:28:06,224 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:28:06,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:06 BoogieIcfgContainer [2022-11-19 07:28:06,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:28:06,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:28:06,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:28:06,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:28:06,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:28:01" (1/3) ... [2022-11-19 07:28:06,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641af8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:06, skipping insertion in model container [2022-11-19 07:28:06,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:01" (2/3) ... [2022-11-19 07:28:06,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641af8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:06, skipping insertion in model container [2022-11-19 07:28:06,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:06" (3/3) ... [2022-11-19 07:28:06,237 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label42.c [2022-11-19 07:28:06,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:28:06,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:28:06,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:28:06,368 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;@1afb9e40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:28:06,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:28:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-11-19 07:28:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:28:06,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:06,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:28:06,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 886085788, now seen corresponding path program 1 times [2022-11-19 07:28:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:06,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345015655] [2022-11-19 07:28:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:06,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:06,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345015655] [2022-11-19 07:28:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345015655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:06,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:06,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:28:06,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034263519] [2022-11-19 07:28:06,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:28:06,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:28:06,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:28:06,696 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:06,778 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2022-11-19 07:28:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:28:06,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:28:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:06,787 INFO L225 Difference]: With dead ends: 23 [2022-11-19 07:28:06,788 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:28:06,790 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 [2022-11-19 07:28:06,794 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:06,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:28:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:28:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-11-19 07:28:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2022-11-19 07:28:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-19 07:28:06,823 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-11-19 07:28:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:06,824 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-19 07:28:06,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:28:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-19 07:28:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:28:06,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:06,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 07:28:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:28:06,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -115357076, now seen corresponding path program 1 times [2022-11-19 07:28:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:06,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850800036] [2022-11-19 07:28:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:20,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:20,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850800036] [2022-11-19 07:28:20,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850800036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:28:20,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499763720] [2022-11-19 07:28:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:20,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:28:20,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:20,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:28:20,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5441871d-5dd9-4a58-b1b3-93e47067e201/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:28:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:20,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:28:20,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:28:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:33,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:28:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:28:46,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499763720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:28:46,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1939536018] [2022-11-19 07:28:46,670 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 07:28:46,670 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:28:46,673 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:28:46,680 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:28:46,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:28:52,451 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2022-11-19 07:28:52,695 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2022-11-19 07:35:04,409 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 125