./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem09_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem09_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh --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 6d1ec6e1a0f63d1fe7f69f12e5e7bad23335a4f4574e0b71169f57ddd44ba12a --- 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-2329fc7 [2022-12-14 05:47:21,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:47:21,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:47:21,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:47:21,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:47:21,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:47:21,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:47:21,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:47:21,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:47:21,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:47:21,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:47:21,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:47:21,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:47:21,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:47:21,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:47:21,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:47:21,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:47:21,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:47:21,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:47:21,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:47:21,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:47:21,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:47:21,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:47:21,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:47:21,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:47:21,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:47:21,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:47:21,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:47:21,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:47:21,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:47:21,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:47:21,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:47:21,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:47:21,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:47:21,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:47:21,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:47:21,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:47:21,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:47:21,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:47:21,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:47:21,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:47:21,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:47:21,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:47:21,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:47:21,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:47:21,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:47:21,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:47:21,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:47:21,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:47:21,396 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:47:21,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:47:21,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:47:21,397 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:47:21,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:47:21,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:47:21,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:47:21,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:47:21,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:47:21,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:47:21,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:47:21,399 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:47:21,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:47:21,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:47:21,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:47:21,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:47:21,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:47:21,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:47:21,399 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_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1ec6e1a0f63d1fe7f69f12e5e7bad23335a4f4574e0b71169f57ddd44ba12a [2022-12-14 05:47:21,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:47:21,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:47:21,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:47:21,601 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:47:21,601 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:47:21,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem09_label52.c [2022-12-14 05:47:24,141 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:47:25,875 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:47:25,875 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/sv-benchmarks/c/eca-rers2012/Problem09_label52.c [2022-12-14 05:47:26,150 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/data/69ab86730/51468adfcf0342b1bdccc50edefdfd99/FLAG11c5f0ce8 [2022-12-14 05:47:26,161 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/data/69ab86730/51468adfcf0342b1bdccc50edefdfd99 [2022-12-14 05:47:26,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:47:26,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:47:26,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:47:26,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:47:26,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:47:26,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:26" (1/1) ... [2022-12-14 05:47:26,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1fec6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:47:26, skipping insertion in model container [2022-12-14 05:47:26,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:47:26" (1/1) ... [2022-12-14 05:47:26,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:47:27,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:47:51,703 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/sv-benchmarks/c/eca-rers2012/Problem09_label52.c[6308520,6308533] [2022-12-14 05:47:51,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:47:51,810 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:48:04,827 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/sv-benchmarks/c/eca-rers2012/Problem09_label52.c[6308520,6308533] [2022-12-14 05:48:04,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:48:08,213 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:48:08,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08 WrapperNode [2022-12-14 05:48:08,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:48:08,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:48:08,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:48:08,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:48:08,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:09,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:11,380 INFO L138 Inliner]: procedures = 88, calls = 82, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 197818 [2022-12-14 05:48:11,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:48:11,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:48:11,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:48:11,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:48:11,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:11,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:11,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:11,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:13,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:13,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:13,433 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:13,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:14,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:48:14,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:48:14,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:48:14,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:48:14,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (1/1) ... [2022-12-14 05:48:14,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:48:14,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:48:14,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:48:14,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f80fc45-db01-4beb-8f49-a10a5b89462a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:48:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:48:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:48:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:48:14,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:48:14,432 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:48:14,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:49:20,555 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:50:09,080 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:50:09,080 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:50:09,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:09 BoogieIcfgContainer [2022-12-14 05:50:09,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:50:09,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:50:09,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:50:09,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:50:09,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:47:26" (1/3) ... [2022-12-14 05:50:09,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:09, skipping insertion in model container [2022-12-14 05:50:09,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:48:08" (2/3) ... [2022-12-14 05:50:09,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:09, skipping insertion in model container [2022-12-14 05:50:09,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:09" (3/3) ... [2022-12-14 05:50:09,098 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem09_label52.c [2022-12-14 05:50:09,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:50:09,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:50:09,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:50:09,294 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;@fed6515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:50:09,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:50:09,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 16544 states, 16542 states have (on average 1.995284729778745) internal successors, (33006), 16543 states have internal predecessors, (33006), 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) [2022-12-14 05:50:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16466 [2022-12-14 05:50:10,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:10,895 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:50:10,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:50:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1181488371, now seen corresponding path program 1 times [2022-12-14 05:50:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:10,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949900536] [2022-12-14 05:50:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:10,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:52:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:52:16,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:52:16,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949900536] [2022-12-14 05:52:16,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949900536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:52:16,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:52:16,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:52:16,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280839806] [2022-12-14 05:52:16,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:52:16,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:52:16,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:52:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:52:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:52:16,626 INFO L87 Difference]: Start difference. First operand has 16544 states, 16542 states have (on average 1.995284729778745) internal successors, (33006), 16543 states have internal predecessors, (33006), 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 4 states, 4 states have (on average 4116.25) internal successors, (16465), 3 states have internal predecessors, (16465), 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) [2022-12-14 05:54:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:54:34,327 INFO L93 Difference]: Finished difference Result 82708 states and 165017 transitions. [2022-12-14 05:54:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:54:34,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4116.25) internal successors, (16465), 3 states have internal predecessors, (16465), 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 16465 [2022-12-14 05:54:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:54:34,548 INFO L225 Difference]: With dead ends: 82708 [2022-12-14 05:54:34,549 INFO L226 Difference]: Without dead ends: 66157 [2022-12-14 05:54:34,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:54:34,576 INFO L413 NwaCegarLoop]: 14659 mSDtfsCounter, 33948 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 140092 mSolverCounterSat, 41876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33948 SdHoareTripleChecker+Valid, 16114 SdHoareTripleChecker+Invalid, 181968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 41876 IncrementalHoareTripleChecker+Valid, 140092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:54:34,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33948 Valid, 16114 Invalid, 181968 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [41876 Valid, 140092 Invalid, 0 Unknown, 0 Unchecked, 135.6s Time] [2022-12-14 05:54:34,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66157 states. [2022-12-14 05:54:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66157 to 65860. [2022-12-14 05:54:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65860 states, 65859 states have (on average 1.4362198029122824) internal successors, (94588), 65859 states have internal predecessors, (94588), 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) [2022-12-14 05:54:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65860 states to 65860 states and 94588 transitions. [2022-12-14 05:54:35,562 INFO L78 Accepts]: Start accepts. Automaton has 65860 states and 94588 transitions. Word has length 16465 [2022-12-14 05:54:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:54:35,578 INFO L495 AbstractCegarLoop]: Abstraction has 65860 states and 94588 transitions. [2022-12-14 05:54:35,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4116.25) internal successors, (16465), 3 states have internal predecessors, (16465), 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) [2022-12-14 05:54:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 65860 states and 94588 transitions. [2022-12-14 05:54:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16525 [2022-12-14 05:54:37,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:54:37,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:54:37,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:54:37,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:54:37,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:54:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1593709122, now seen corresponding path program 1 times [2022-12-14 05:54:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:54:37,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392296823] [2022-12-14 05:54:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:54:37,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:54:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:55:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:55:58,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:55:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392296823] [2022-12-14 05:55:58,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392296823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:55:58,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:55:58,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:55:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21814879] [2022-12-14 05:55:58,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:55:58,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:55:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:55:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:55:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:55:58,724 INFO L87 Difference]: Start difference. First operand 65860 states and 94588 transitions. Second operand has 3 states, 3 states have (on average 5508.0) internal successors, (16524), 2 states have internal predecessors, (16524), 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) [2022-12-14 05:56:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:56:56,605 INFO L93 Difference]: Finished difference Result 197568 states and 283753 transitions. [2022-12-14 05:56:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:56:56,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5508.0) internal successors, (16524), 2 states have internal predecessors, (16524), 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 16524 [2022-12-14 05:56:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:56:56,773 INFO L225 Difference]: With dead ends: 197568 [2022-12-14 05:56:56,773 INFO L226 Difference]: Without dead ends: 131709 [2022-12-14 05:56:56,802 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 [2022-12-14 05:56:56,803 INFO L413 NwaCegarLoop]: 9608 mSDtfsCounter, 17506 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 52801 mSolverCounterSat, 14976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17506 SdHoareTripleChecker+Valid, 9978 SdHoareTripleChecker+Invalid, 67777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 14976 IncrementalHoareTripleChecker+Valid, 52801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:56:56,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17506 Valid, 9978 Invalid, 67777 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [14976 Valid, 52801 Invalid, 0 Unknown, 0 Unchecked, 56.7s Time] [2022-12-14 05:56:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131709 states. [2022-12-14 05:56:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131709 to 131709. [2022-12-14 05:56:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131709 states, 131708 states have (on average 1.3005208491511526) internal successors, (171289), 131708 states have internal predecessors, (171289), 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) [2022-12-14 05:56:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131709 states to 131709 states and 171289 transitions. [2022-12-14 05:56:57,969 INFO L78 Accepts]: Start accepts. Automaton has 131709 states and 171289 transitions. Word has length 16524 [2022-12-14 05:56:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:56:57,971 INFO L495 AbstractCegarLoop]: Abstraction has 131709 states and 171289 transitions. [2022-12-14 05:56:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5508.0) internal successors, (16524), 2 states have internal predecessors, (16524), 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) [2022-12-14 05:56:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 131709 states and 171289 transitions. [2022-12-14 05:56:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16567 [2022-12-14 05:56:59,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:56:59,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:56:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:56:59,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:56:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:56:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash -154151418, now seen corresponding path program 1 times [2022-12-14 05:56:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:56:59,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191201604] [2022-12-14 05:56:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:56:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:57:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:58:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:58:03,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:58:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191201604] [2022-12-14 05:58:03,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191201604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:58:03,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:58:03,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:58:03,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573412402] [2022-12-14 05:58:03,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:58:03,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:58:03,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:58:03,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:58:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:58:03,152 INFO L87 Difference]: Start difference. First operand 131709 states and 171289 transitions. Second operand has 3 states, 3 states have (on average 5519.333333333333) internal successors, (16558), 2 states have internal predecessors, (16558), 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) [2022-12-14 05:59:00,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:00,899 INFO L93 Difference]: Finished difference Result 329573 states and 447359 transitions. [2022-12-14 05:59:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:59:00,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5519.333333333333) internal successors, (16558), 2 states have internal predecessors, (16558), 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 16566 [2022-12-14 05:59:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:01,111 INFO L225 Difference]: With dead ends: 329573 [2022-12-14 05:59:01,111 INFO L226 Difference]: Without dead ends: 197865 [2022-12-14 05:59:01,158 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 [2022-12-14 05:59:01,159 INFO L413 NwaCegarLoop]: 7999 mSDtfsCounter, 20543 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 46144 mSolverCounterSat, 21107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20543 SdHoareTripleChecker+Valid, 8368 SdHoareTripleChecker+Invalid, 67251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21107 IncrementalHoareTripleChecker+Valid, 46144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:01,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20543 Valid, 8368 Invalid, 67251 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21107 Valid, 46144 Invalid, 0 Unknown, 0 Unchecked, 56.3s Time] [2022-12-14 05:59:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197865 states.