./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label54.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_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/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_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/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_b78adf9f-f949-4de4-b59c-8b42313ee10a/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 86c957edaa3a19e9386396f93b83971b79b2c7d38305a79160055b9fd3c1d0de --- 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 06:38:10,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:38:10,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:38:10,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:38:10,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:38:10,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:38:10,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:38:10,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:38:10,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:38:10,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:38:10,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:38:10,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:38:10,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:38:10,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:38:10,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:38:10,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:38:10,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:38:10,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:38:10,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:38:10,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:38:10,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:38:10,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:38:10,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:38:10,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:38:10,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:38:10,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:38:10,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:38:10,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:38:10,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:38:10,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:38:10,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:38:10,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:38:10,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:38:10,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:38:10,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:38:10,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:38:10,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:38:10,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:38:10,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:38:10,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:38:10,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:38:10,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:38:10,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:38:10,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:38:10,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:38:10,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:38:10,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:38:10,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:38:10,101 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:38:10,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:38:10,102 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:38:10,102 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:38:10,102 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:38:10,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:38:10,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:38:10,103 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:38:10,103 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:38:10,103 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:38:10,103 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:38:10,103 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:38:10,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:38:10,104 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:38:10,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:38:10,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:38:10,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:38:10,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:38:10,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:38:10,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:38:10,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:38:10,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:38:10,106 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:38:10,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:38:10,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:38:10,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:38:10,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:38:10,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:38:10,107 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:38:10,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:38:10,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:38:10,108 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:38:10,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:38:10,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:38:10,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:38:10,108 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_b78adf9f-f949-4de4-b59c-8b42313ee10a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86c957edaa3a19e9386396f93b83971b79b2c7d38305a79160055b9fd3c1d0de [2022-12-14 06:38:10,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:38:10,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:38:10,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:38:10,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:38:10,298 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:38:10,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem02_label54.c [2022-12-14 06:38:12,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:38:13,017 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:38:13,017 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/sv-benchmarks/c/eca-rers2012/Problem02_label54.c [2022-12-14 06:38:13,024 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/data/cad760ade/0a32981b3a14404085aff6f6a1210b40/FLAGf260e720b [2022-12-14 06:38:13,036 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/data/cad760ade/0a32981b3a14404085aff6f6a1210b40 [2022-12-14 06:38:13,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:38:13,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:38:13,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:38:13,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:38:13,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:38:13,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6e7bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13, skipping insertion in model container [2022-12-14 06:38:13,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:38:13,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:38:13,257 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_b78adf9f-f949-4de4-b59c-8b42313ee10a/sv-benchmarks/c/eca-rers2012/Problem02_label54.c[16901,16914] [2022-12-14 06:38:13,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:38:13,288 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:38:13,343 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_b78adf9f-f949-4de4-b59c-8b42313ee10a/sv-benchmarks/c/eca-rers2012/Problem02_label54.c[16901,16914] [2022-12-14 06:38:13,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:38:13,364 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:38:13,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13 WrapperNode [2022-12-14 06:38:13,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:38:13,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:38:13,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:38:13,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:38:13,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,411 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-12-14 06:38:13,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:38:13,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:38:13,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:38:13,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:38:13,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,444 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:38:13,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:38:13,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:38:13,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:38:13,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (1/1) ... [2022-12-14 06:38:13,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:38:13,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:38:13,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:38:13,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:38:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:38:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:38:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:38:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:38:13,571 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:38:13,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:38:14,244 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:38:14,407 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:38:14,407 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:38:14,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:38:14 BoogieIcfgContainer [2022-12-14 06:38:14,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:38:14,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:38:14,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:38:14,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:38:14,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:38:13" (1/3) ... [2022-12-14 06:38:14,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62824e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:38:14, skipping insertion in model container [2022-12-14 06:38:14,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:38:13" (2/3) ... [2022-12-14 06:38:14,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62824e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:38:14, skipping insertion in model container [2022-12-14 06:38:14,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:38:14" (3/3) ... [2022-12-14 06:38:14,415 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2022-12-14 06:38:14,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:38:14,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:38:14,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:38:14,470 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;@22821c50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:38:14,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:38:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 06:38:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 06:38:14,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:14,480 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] [2022-12-14 06:38:14,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1814573780, now seen corresponding path program 1 times [2022-12-14 06:38:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:14,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431933429] [2022-12-14 06:38:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:14,763 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 06:38:14,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:14,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431933429] [2022-12-14 06:38:14,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431933429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:14,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:14,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:38:14,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473585753] [2022-12-14 06:38:14,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:14,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:14,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:14,796 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 06:38:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:15,129 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-12-14 06:38:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:15,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2022-12-14 06:38:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:15,138 INFO L225 Difference]: With dead ends: 251 [2022-12-14 06:38:15,138 INFO L226 Difference]: Without dead ends: 163 [2022-12-14 06:38:15,140 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 06:38:15,142 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:15,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:38:15,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-14 06:38:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-12-14 06:38:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 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 06:38:15,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2022-12-14 06:38:15,175 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2022-12-14 06:38:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:15,176 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2022-12-14 06:38:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 06:38:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2022-12-14 06:38:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 06:38:15,178 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:15,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:38:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:38:15,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -483707145, now seen corresponding path program 1 times [2022-12-14 06:38:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:15,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726794181] [2022-12-14 06:38:15,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:38:15,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:15,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726794181] [2022-12-14 06:38:15,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726794181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:15,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:15,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:38:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357785508] [2022-12-14 06:38:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:15,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:15,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:15,280 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:38:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:15,580 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2022-12-14 06:38:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:15,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-12-14 06:38:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:15,583 INFO L225 Difference]: With dead ends: 405 [2022-12-14 06:38:15,583 INFO L226 Difference]: Without dead ends: 243 [2022-12-14 06:38:15,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:15,586 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:15,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:38:15,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-14 06:38:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-12-14 06:38:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 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 06:38:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2022-12-14 06:38:15,595 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2022-12-14 06:38:15,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:15,596 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2022-12-14 06:38:15,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:38:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2022-12-14 06:38:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 06:38:15,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:15,598 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:38:15,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:38:15,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1049110576, now seen corresponding path program 1 times [2022-12-14 06:38:15,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:15,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428506525] [2022-12-14 06:38:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:38:15,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:15,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428506525] [2022-12-14 06:38:15,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428506525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:15,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:15,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:38:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187468461] [2022-12-14 06:38:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:15,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:15,653 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 06:38:15,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:15,930 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2022-12-14 06:38:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2022-12-14 06:38:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:15,933 INFO L225 Difference]: With dead ends: 725 [2022-12-14 06:38:15,934 INFO L226 Difference]: Without dead ends: 483 [2022-12-14 06:38:15,935 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 06:38:15,936 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 104 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:15,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 30 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:38:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-12-14 06:38:15,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-12-14 06:38:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.396265560165975) internal successors, (673), 482 states have internal predecessors, (673), 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 06:38:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 673 transitions. [2022-12-14 06:38:15,949 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 673 transitions. Word has length 95 [2022-12-14 06:38:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:15,949 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 673 transitions. [2022-12-14 06:38:15,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 06:38:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 673 transitions. [2022-12-14 06:38:15,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-14 06:38:15,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:15,952 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 06:38:15,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:38:15,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:15,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1996723777, now seen corresponding path program 1 times [2022-12-14 06:38:15,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:15,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910043531] [2022-12-14 06:38:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:15,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 06:38:16,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:16,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910043531] [2022-12-14 06:38:16,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910043531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:16,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:16,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:38:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307354234] [2022-12-14 06:38:16,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:16,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:16,067 INFO L87 Difference]: Start difference. First operand 483 states and 673 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 06:38:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:16,313 INFO L93 Difference]: Finished difference Result 1125 states and 1545 transitions. [2022-12-14 06:38:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:16,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 124 [2022-12-14 06:38:16,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:16,317 INFO L225 Difference]: With dead ends: 1125 [2022-12-14 06:38:16,317 INFO L226 Difference]: Without dead ends: 563 [2022-12-14 06:38:16,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:16,320 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:16,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 23 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:38:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-12-14 06:38:16,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2022-12-14 06:38:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.2384341637010676) internal successors, (696), 562 states have internal predecessors, (696), 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 06:38:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 696 transitions. [2022-12-14 06:38:16,334 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 696 transitions. Word has length 124 [2022-12-14 06:38:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:16,335 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 696 transitions. [2022-12-14 06:38:16,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 06:38:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 696 transitions. [2022-12-14 06:38:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 06:38:16,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:16,337 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 06:38:16,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:38:16,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1690313547, now seen corresponding path program 1 times [2022-12-14 06:38:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:16,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616175148] [2022-12-14 06:38:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 06:38:16,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:16,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616175148] [2022-12-14 06:38:16,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616175148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:38:16,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556449157] [2022-12-14 06:38:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:16,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:38:16,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:38:16,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:38:16,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:38:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:16,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:38:16,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:38:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 06:38:16,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:38:16,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556449157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:16,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:38:16,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-14 06:38:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467955390] [2022-12-14 06:38:16,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:16,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:38:16,720 INFO L87 Difference]: Start difference. First operand 563 states and 696 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 06:38:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:16,949 INFO L93 Difference]: Finished difference Result 1605 states and 1990 transitions. [2022-12-14 06:38:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:16,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 128 [2022-12-14 06:38:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:16,955 INFO L225 Difference]: With dead ends: 1605 [2022-12-14 06:38:16,955 INFO L226 Difference]: Without dead ends: 1043 [2022-12-14 06:38:16,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:38:16,962 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 62 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:16,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 145 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:38:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-12-14 06:38:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2022-12-14 06:38:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.208939708939709) internal successors, (1163), 962 states have internal predecessors, (1163), 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 06:38:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1163 transitions. [2022-12-14 06:38:16,978 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1163 transitions. Word has length 128 [2022-12-14 06:38:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:16,978 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1163 transitions. [2022-12-14 06:38:16,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 06:38:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1163 transitions. [2022-12-14 06:38:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 06:38:16,980 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:16,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:16,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:38:17,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:38:17,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1882526977, now seen corresponding path program 1 times [2022-12-14 06:38:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:17,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043419902] [2022-12-14 06:38:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:38:17,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:17,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043419902] [2022-12-14 06:38:17,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043419902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:17,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:17,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:38:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608208553] [2022-12-14 06:38:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:17,253 INFO L87 Difference]: Start difference. First operand 963 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 06:38:17,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:17,382 INFO L93 Difference]: Finished difference Result 1765 states and 2143 transitions. [2022-12-14 06:38:17,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:17,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 132 [2022-12-14 06:38:17,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:17,384 INFO L225 Difference]: With dead ends: 1765 [2022-12-14 06:38:17,385 INFO L226 Difference]: Without dead ends: 723 [2022-12-14 06:38:17,386 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 06:38:17,387 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:17,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 4 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:38:17,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-12-14 06:38:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2022-12-14 06:38:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.1301939058171746) internal successors, (816), 722 states have internal predecessors, (816), 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 06:38:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 816 transitions. [2022-12-14 06:38:17,403 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 816 transitions. Word has length 132 [2022-12-14 06:38:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:17,403 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 816 transitions. [2022-12-14 06:38:17,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 06:38:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 816 transitions. [2022-12-14 06:38:17,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-14 06:38:17,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:17,406 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:17,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:38:17,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1874198736, now seen corresponding path program 1 times [2022-12-14 06:38:17,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:17,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063690970] [2022-12-14 06:38:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:17,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 06:38:17,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:17,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063690970] [2022-12-14 06:38:17,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063690970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:17,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:17,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:38:17,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149031002] [2022-12-14 06:38:17,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:17,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:17,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:17,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:17,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:17,506 INFO L87 Difference]: Start difference. First operand 723 states and 816 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 06:38:17,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:17,696 INFO L93 Difference]: Finished difference Result 1445 states and 1634 transitions. [2022-12-14 06:38:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:17,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 170 [2022-12-14 06:38:17,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:17,700 INFO L225 Difference]: With dead ends: 1445 [2022-12-14 06:38:17,700 INFO L226 Difference]: Without dead ends: 643 [2022-12-14 06:38:17,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:17,702 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 33 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:17,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 116 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:38:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-12-14 06:38:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2022-12-14 06:38:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.1105919003115265) internal successors, (713), 642 states have internal predecessors, (713), 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 06:38:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 713 transitions. [2022-12-14 06:38:17,711 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 713 transitions. Word has length 170 [2022-12-14 06:38:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:17,712 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 713 transitions. [2022-12-14 06:38:17,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 06:38:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 713 transitions. [2022-12-14 06:38:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-12-14 06:38:17,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:17,713 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-12-14 06:38:17,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:38:17,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:17,714 INFO L85 PathProgramCache]: Analyzing trace with hash 666818717, now seen corresponding path program 1 times [2022-12-14 06:38:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:17,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940881243] [2022-12-14 06:38:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-14 06:38:17,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:17,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940881243] [2022-12-14 06:38:17,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940881243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:17,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:17,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:38:17,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469979614] [2022-12-14 06:38:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:17,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:17,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:17,815 INFO L87 Difference]: Start difference. First operand 643 states and 713 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 06:38:18,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:18,016 INFO L93 Difference]: Finished difference Result 1365 states and 1536 transitions. [2022-12-14 06:38:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:18,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 205 [2022-12-14 06:38:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:18,020 INFO L225 Difference]: With dead ends: 1365 [2022-12-14 06:38:18,021 INFO L226 Difference]: Without dead ends: 723 [2022-12-14 06:38:18,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:18,023 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 57 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:18,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 98 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:38:18,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-12-14 06:38:18,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2022-12-14 06:38:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.0955678670360112) internal successors, (791), 722 states have internal predecessors, (791), 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 06:38:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 791 transitions. [2022-12-14 06:38:18,033 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 791 transitions. Word has length 205 [2022-12-14 06:38:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:18,033 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 791 transitions. [2022-12-14 06:38:18,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 06:38:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 791 transitions. [2022-12-14 06:38:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-12-14 06:38:18,035 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:38:18,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:38:18,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:38:18,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:38:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:38:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1987754669, now seen corresponding path program 1 times [2022-12-14 06:38:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:38:18,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717007839] [2022-12-14 06:38:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:38:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:38:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:38:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-14 06:38:18,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:38:18,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717007839] [2022-12-14 06:38:18,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717007839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:38:18,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:38:18,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:38:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091374843] [2022-12-14 06:38:18,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:38:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:38:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:38:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:38:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:18,141 INFO L87 Difference]: Start difference. First operand 723 states and 791 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 06:38:18,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:38:18,313 INFO L93 Difference]: Finished difference Result 883 states and 961 transitions. [2022-12-14 06:38:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:38:18,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 215 [2022-12-14 06:38:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:38:18,314 INFO L225 Difference]: With dead ends: 883 [2022-12-14 06:38:18,314 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 06:38:18,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:38:18,316 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:38:18,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:38:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 06:38:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 06:38:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:38:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 06:38:18,317 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 215 [2022-12-14 06:38:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:38:18,317 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 06:38:18,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 06:38:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 06:38:18,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 06:38:18,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 06:38:18,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:38:18,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 06:38:18,545 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-12-14 06:38:18,546 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-12-14 06:38:18,547 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-12-14 06:38:18,548 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 485) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-12-14 06:38:18,549 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-12-14 06:38:18,550 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-12-14 06:38:18,551 INFO L899 garLoopResultBuilder]: For program point L481-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= 10 ~a28~0)) (.cse1 (<= ~a17~0 7)) (.cse2 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse3 (<= ~a17~0 8)) (.cse4 (= ~a19~0 1)) (.cse5 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and (<= 9 ~a28~0) .cse3 .cse2 .cse4) (and .cse3 .cse2 .cse5) (and .cse6 .cse2 .cse4) (and .cse6 .cse1 .cse2) (and .cse3 (<= ~a28~0 7)) (and .cse0 .cse3 .cse4 .cse5))) [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L484-1(lines 39 608) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L485(line 485) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-12-14 06:38:18,552 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-12-14 06:38:18,553 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 06:38:18,553 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-12-14 06:38:18,553 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-12-14 06:38:18,553 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-12-14 06:38:18,553 INFO L895 garLoopResultBuilder]: At program point calculate_output_returnLabel#1(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= 10 ~a28~0)) (.cse1 (<= ~a17~0 7)) (.cse2 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse3 (<= ~a17~0 8)) (.cse4 (= ~a19~0 1)) (.cse5 (not (= ~a11~0 1)))) (or (and .cse0 .cse1 .cse2) (and (<= 9 ~a28~0) .cse3 .cse2 .cse4) (and .cse3 .cse2 .cse5) (and .cse6 .cse2 .cse4) (and .cse6 .cse1 .cse2) (and .cse3 (<= ~a28~0 7)) (and .cse0 .cse3 .cse4 .cse5))) [2022-12-14 06:38:18,553 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-12-14 06:38:18,553 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-12-14 06:38:18,553 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-12-14 06:38:18,555 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:38:18,557 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:38:18,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:38:18 BoogieIcfgContainer [2022-12-14 06:38:18,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:38:18,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:38:18,569 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:38:18,569 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:38:18,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:38:14" (3/4) ... [2022-12-14 06:38:18,572 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 06:38:18,583 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-12-14 06:38:18,584 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-14 06:38:18,584 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 06:38:18,585 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 06:38:18,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:38:18,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:38:18,641 INFO L158 Benchmark]: Toolchain (without parser) took 5602.13ms. Allocated memory was 144.7MB in the beginning and 213.9MB in the end (delta: 69.2MB). Free memory was 105.1MB in the beginning and 125.7MB in the end (delta: -20.6MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2022-12-14 06:38:18,641 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 144.7MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:38:18,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.90ms. Allocated memory is still 144.7MB. Free memory was 105.1MB in the beginning and 78.6MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 06:38:18,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.72ms. Allocated memory is still 144.7MB. Free memory was 78.6MB in the beginning and 73.3MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 06:38:18,642 INFO L158 Benchmark]: Boogie Preprocessor took 39.00ms. Allocated memory is still 144.7MB. Free memory was 73.3MB in the beginning and 68.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 06:38:18,642 INFO L158 Benchmark]: RCFGBuilder took 957.54ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 68.6MB in the beginning and 98.2MB in the end (delta: -29.6MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2022-12-14 06:38:18,642 INFO L158 Benchmark]: TraceAbstraction took 4158.23ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 97.2MB in the beginning and 136.2MB in the end (delta: -39.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:38:18,643 INFO L158 Benchmark]: Witness Printer took 71.13ms. Allocated memory is still 213.9MB. Free memory was 136.2MB in the beginning and 125.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 06:38:18,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 144.7MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.90ms. Allocated memory is still 144.7MB. Free memory was 105.1MB in the beginning and 78.6MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.72ms. Allocated memory is still 144.7MB. Free memory was 78.6MB in the beginning and 73.3MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.00ms. Allocated memory is still 144.7MB. Free memory was 73.3MB in the beginning and 68.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 957.54ms. Allocated memory was 144.7MB in the beginning and 178.3MB in the end (delta: 33.6MB). Free memory was 68.6MB in the beginning and 98.2MB in the end (delta: -29.6MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4158.23ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 97.2MB in the beginning and 136.2MB in the end (delta: -39.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.13ms. Allocated memory is still 213.9MB. Free memory was 136.2MB in the beginning and 125.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 485]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 433 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 433 mSDsluCounter, 617 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 454 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1835 IncrementalHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 454 mSolverCounterUnsat, 577 mSDtfsCounter, 1835 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 80 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 153 HoareAnnotationTreeSize, 3 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 312 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1362 NumberOfCodeBlocks, 1362 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1352 ConstructedInterpolants, 0 QuantifiedInterpolants, 3009 SizeOfPredicates, 0 NumberOfNonLiveVariables, 301 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 911/919 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a25 == 1 && a17 <= 7) && a28 <= 10) || (((9 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((a17 <= 8 && a28 <= 10) && !(a11 == 1))) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 7) && a28 <= 10)) || (a17 <= 8 && a28 <= 7)) || (((a25 == 1 && a17 <= 8) && a19 == 1) && !(a11 == 1)) - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((a25 == 1 && a17 <= 7) && a28 <= 10) || (((9 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((a17 <= 8 && a28 <= 10) && !(a11 == 1))) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || ((10 <= a28 && a17 <= 7) && a28 <= 10)) || (a17 <= 8 && a28 <= 7)) || (((a25 == 1 && a17 <= 8) && a19 == 1) && !(a11 == 1)) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 06:38:18,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78adf9f-f949-4de4-b59c-8b42313ee10a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE