./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label31.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_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/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_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/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_55565b36-1e51-45df-b66e-1d865113945f/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 e4dd87ffa8279e5be73819f1eecf23f4704317559faef100e8eb60d719eb066b --- 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 07:03:03,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:03:03,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:03:03,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:03:03,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:03:03,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:03:03,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:03:03,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:03:03,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:03:03,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:03:03,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:03:03,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:03:03,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:03:03,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:03:03,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:03:03,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:03:03,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:03:03,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:03:03,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:03:03,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:03:03,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:03:03,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:03:03,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:03:03,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:03:03,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:03:03,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:03:03,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:03:03,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:03:03,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:03:03,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:03:03,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:03:03,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:03:03,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:03:03,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:03:03,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:03:03,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:03:03,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:03:03,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:03:03,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:03:03,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:03:03,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:03:03,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:03:03,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:03:03,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:03:03,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:03:03,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:03:03,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:03:03,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:03:03,326 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:03:03,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:03:03,326 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:03:03,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:03:03,327 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:03:03,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:03:03,327 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:03:03,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:03:03,327 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:03:03,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:03:03,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:03:03,328 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:03:03,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:03:03,329 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:03:03,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:03:03,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:03:03,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:03:03,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:03:03,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:03:03,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:03:03,330 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:03:03,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:03:03,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:03:03,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:03:03,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:03:03,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:03:03,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:03:03,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:03:03,332 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:03:03,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:03:03,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:03:03,332 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:03:03,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:03:03,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:03:03,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:03:03,333 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_55565b36-1e51-45df-b66e-1d865113945f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4dd87ffa8279e5be73819f1eecf23f4704317559faef100e8eb60d719eb066b [2022-12-14 07:03:03,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:03:03,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:03:03,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:03:03,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:03:03,553 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:03:03,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/eca-rers2012/Problem01_label31.c [2022-12-14 07:03:06,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:03:06,341 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:03:06,342 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/sv-benchmarks/c/eca-rers2012/Problem01_label31.c [2022-12-14 07:03:06,352 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/data/647c19e42/97acbb2372334787941ed2b86500691d/FLAGd87626787 [2022-12-14 07:03:06,365 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/data/647c19e42/97acbb2372334787941ed2b86500691d [2022-12-14 07:03:06,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:03:06,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:03:06,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:03:06,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:03:06,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:03:06,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52309b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06, skipping insertion in model container [2022-12-14 07:03:06,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:03:06,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:03:06,686 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_55565b36-1e51-45df-b66e-1d865113945f/sv-benchmarks/c/eca-rers2012/Problem01_label31.c[16993,17006] [2022-12-14 07:03:06,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:03:06,722 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:03:06,808 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_55565b36-1e51-45df-b66e-1d865113945f/sv-benchmarks/c/eca-rers2012/Problem01_label31.c[16993,17006] [2022-12-14 07:03:06,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:03:06,836 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:03:06,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06 WrapperNode [2022-12-14 07:03:06,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:03:06,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:03:06,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:03:06,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:03:06,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,898 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-12-14 07:03:06,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:03:06,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:03:06,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:03:06,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:03:06,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,946 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:03:06,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:03:06,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:03:06,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:03:06,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (1/1) ... [2022-12-14 07:03:06,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:03:06,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:03:06,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:03:06,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:03:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:03:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:03:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:03:07,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:03:07,090 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:03:07,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:03:07,821 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:03:07,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:03:07,985 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:03:07,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:03:07 BoogieIcfgContainer [2022-12-14 07:03:07,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:03:07,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:03:07,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:03:07,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:03:07,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:03:06" (1/3) ... [2022-12-14 07:03:07,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:03:07, skipping insertion in model container [2022-12-14 07:03:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:06" (2/3) ... [2022-12-14 07:03:07,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:03:07, skipping insertion in model container [2022-12-14 07:03:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:03:07" (3/3) ... [2022-12-14 07:03:07,993 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2022-12-14 07:03:08,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:03:08,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:03:08,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:03:08,046 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;@d789be6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:03:08,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:03:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 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 07:03:08,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 07:03:08,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:08,060 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] [2022-12-14 07:03:08,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 379011262, now seen corresponding path program 1 times [2022-12-14 07:03:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614367564] [2022-12-14 07:03:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:08,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:08,376 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 07:03:08,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:08,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614367564] [2022-12-14 07:03:08,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614367564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:08,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:08,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:03:08,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926565354] [2022-12-14 07:03:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:08,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:03:08,412 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 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) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 07:03:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:08,762 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-12-14 07:03:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:08,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2022-12-14 07:03:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:08,772 INFO L225 Difference]: With dead ends: 224 [2022-12-14 07:03:08,772 INFO L226 Difference]: Without dead ends: 145 [2022-12-14 07:03:08,774 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 07:03:08,776 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:08,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:03:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-14 07:03:08,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-12-14 07:03:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 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 07:03:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2022-12-14 07:03:08,819 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2022-12-14 07:03:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:08,820 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2022-12-14 07:03:08,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 07:03:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2022-12-14 07:03:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 07:03:08,822 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:08,823 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] [2022-12-14 07:03:08,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:03:08,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:08,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1708118262, now seen corresponding path program 1 times [2022-12-14 07:03:08,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:08,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004120943] [2022-12-14 07:03:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:08,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:08,913 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 07:03:08,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:08,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004120943] [2022-12-14 07:03:08,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004120943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:08,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:08,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:03:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812937555] [2022-12-14 07:03:08,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:08,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:03:08,917 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 07:03:09,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:09,178 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2022-12-14 07:03:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:09,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2022-12-14 07:03:09,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:09,180 INFO L225 Difference]: With dead ends: 431 [2022-12-14 07:03:09,180 INFO L226 Difference]: Without dead ends: 287 [2022-12-14 07:03:09,181 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 07:03:09,182 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:09,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-14 07:03:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-12-14 07:03:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 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 07:03:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2022-12-14 07:03:09,201 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2022-12-14 07:03:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:09,201 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2022-12-14 07:03:09,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 07:03:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2022-12-14 07:03:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 07:03:09,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:09,204 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] [2022-12-14 07:03:09,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:03:09,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash 714029981, now seen corresponding path program 1 times [2022-12-14 07:03:09,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:09,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961500500] [2022-12-14 07:03:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:09,329 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 07:03:09,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:09,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961500500] [2022-12-14 07:03:09,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961500500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:09,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:09,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:03:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548110249] [2022-12-14 07:03:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:09,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:03:09,331 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 07:03:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:09,573 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2022-12-14 07:03:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2022-12-14 07:03:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:09,576 INFO L225 Difference]: With dead ends: 786 [2022-12-14 07:03:09,577 INFO L226 Difference]: Without dead ends: 500 [2022-12-14 07:03:09,578 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 07:03:09,580 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:09,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-12-14 07:03:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2022-12-14 07:03:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 428 states have internal predecessors, (682), 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 07:03:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2022-12-14 07:03:09,591 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2022-12-14 07:03:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:09,592 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2022-12-14 07:03:09,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 07:03:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2022-12-14 07:03:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 07:03:09,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:09,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-14 07:03:09,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:03:09,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash 763839277, now seen corresponding path program 1 times [2022-12-14 07:03:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:09,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866750109] [2022-12-14 07:03:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:09,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 07:03:09,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866750109] [2022-12-14 07:03:09,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866750109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:09,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:09,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:03:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650377647] [2022-12-14 07:03:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:09,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:09,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:03:09,700 INFO L87 Difference]: Start difference. First operand 429 states and 682 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 07:03:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:09,934 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2022-12-14 07:03:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:09,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 87 [2022-12-14 07:03:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:09,937 INFO L225 Difference]: With dead ends: 999 [2022-12-14 07:03:09,937 INFO L226 Difference]: Without dead ends: 571 [2022-12-14 07:03:09,938 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 07:03:09,939 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 72 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:09,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 56 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-12-14 07:03:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-12-14 07:03:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5105263157894737) internal successors, (861), 570 states have internal predecessors, (861), 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 07:03:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 861 transitions. [2022-12-14 07:03:09,958 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 861 transitions. Word has length 87 [2022-12-14 07:03:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:09,958 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 861 transitions. [2022-12-14 07:03:09,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 07:03:09,958 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 861 transitions. [2022-12-14 07:03:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 07:03:09,961 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:09,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-14 07:03:09,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:03:09,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2013622683, now seen corresponding path program 1 times [2022-12-14 07:03:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:09,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739324231] [2022-12-14 07:03:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:03:10,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:10,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739324231] [2022-12-14 07:03:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739324231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:10,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:10,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:03:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981990563] [2022-12-14 07:03:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:10,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:03:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:10,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:03:10,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:03:10,092 INFO L87 Difference]: Start difference. First operand 571 states and 861 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 07:03:10,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:10,441 INFO L93 Difference]: Finished difference Result 1425 states and 2113 transitions. [2022-12-14 07:03:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:03:10,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-12-14 07:03:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:10,447 INFO L225 Difference]: With dead ends: 1425 [2022-12-14 07:03:10,447 INFO L226 Difference]: Without dead ends: 855 [2022-12-14 07:03:10,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:03:10,449 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 139 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:10,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 53 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:03:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-12-14 07:03:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2022-12-14 07:03:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4559386973180077) internal successors, (1140), 783 states have internal predecessors, (1140), 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 07:03:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1140 transitions. [2022-12-14 07:03:10,462 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1140 transitions. Word has length 90 [2022-12-14 07:03:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:10,463 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1140 transitions. [2022-12-14 07:03:10,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 07:03:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1140 transitions. [2022-12-14 07:03:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 07:03:10,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:10,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:10,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:03:10,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash 683568294, now seen corresponding path program 1 times [2022-12-14 07:03:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:10,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421738365] [2022-12-14 07:03:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:03:10,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:10,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421738365] [2022-12-14 07:03:10,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421738365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:10,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:10,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:03:10,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433042897] [2022-12-14 07:03:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:10,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:10,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:03:10,576 INFO L87 Difference]: Start difference. First operand 784 states and 1140 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 07:03:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:10,789 INFO L93 Difference]: Finished difference Result 1567 states and 2279 transitions. [2022-12-14 07:03:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-12-14 07:03:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:10,793 INFO L225 Difference]: With dead ends: 1567 [2022-12-14 07:03:10,793 INFO L226 Difference]: Without dead ends: 784 [2022-12-14 07:03:10,794 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 07:03:10,795 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:10,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-12-14 07:03:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 642. [2022-12-14 07:03:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.329173166926677) internal successors, (852), 641 states have internal predecessors, (852), 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 07:03:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 852 transitions. [2022-12-14 07:03:10,811 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 852 transitions. Word has length 108 [2022-12-14 07:03:10,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:10,812 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 852 transitions. [2022-12-14 07:03:10,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 07:03:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 852 transitions. [2022-12-14 07:03:10,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-14 07:03:10,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:10,815 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-14 07:03:10,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:03:10,815 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:10,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1573514720, now seen corresponding path program 1 times [2022-12-14 07:03:10,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:10,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872714519] [2022-12-14 07:03:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:10,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:03:10,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:10,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872714519] [2022-12-14 07:03:10,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872714519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:10,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:10,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:03:10,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783993220] [2022-12-14 07:03:10,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:10,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:03:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:03:10,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:03:10,945 INFO L87 Difference]: Start difference. First operand 642 states and 852 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 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 07:03:11,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:11,285 INFO L93 Difference]: Finished difference Result 1496 states and 1982 transitions. [2022-12-14 07:03:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:03:11,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 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 145 [2022-12-14 07:03:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:11,288 INFO L225 Difference]: With dead ends: 1496 [2022-12-14 07:03:11,288 INFO L226 Difference]: Without dead ends: 855 [2022-12-14 07:03:11,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:03:11,290 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 107 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:11,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 48 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:03:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-12-14 07:03:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2022-12-14 07:03:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.2924648786717752) internal successors, (1012), 783 states have internal predecessors, (1012), 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 07:03:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1012 transitions. [2022-12-14 07:03:11,310 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1012 transitions. Word has length 145 [2022-12-14 07:03:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:11,310 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1012 transitions. [2022-12-14 07:03:11,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 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 07:03:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1012 transitions. [2022-12-14 07:03:11,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 07:03:11,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:11,313 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 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] [2022-12-14 07:03:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:03:11,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:11,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash -927449499, now seen corresponding path program 1 times [2022-12-14 07:03:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:11,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770830841] [2022-12-14 07:03:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:03:11,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:11,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770830841] [2022-12-14 07:03:11,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770830841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:11,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:11,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:03:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675519426] [2022-12-14 07:03:11,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:11,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:11,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:03:11,472 INFO L87 Difference]: Start difference. First operand 784 states and 1012 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 07:03:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:11,720 INFO L93 Difference]: Finished difference Result 1851 states and 2385 transitions. [2022-12-14 07:03:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2022-12-14 07:03:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:11,723 INFO L225 Difference]: With dead ends: 1851 [2022-12-14 07:03:11,724 INFO L226 Difference]: Without dead ends: 1068 [2022-12-14 07:03:11,725 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 07:03:11,725 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:11,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 130 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:11,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-12-14 07:03:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-12-14 07:03:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2660642570281124) internal successors, (1261), 996 states have internal predecessors, (1261), 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 07:03:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1261 transitions. [2022-12-14 07:03:11,749 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1261 transitions. Word has length 155 [2022-12-14 07:03:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:11,749 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1261 transitions. [2022-12-14 07:03:11,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 07:03:11,750 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1261 transitions. [2022-12-14 07:03:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 07:03:11,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:11,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 07:03:11,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:03:11,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1653698687, now seen corresponding path program 1 times [2022-12-14 07:03:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:11,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261620836] [2022-12-14 07:03:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 106 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 07:03:11,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261620836] [2022-12-14 07:03:11,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261620836] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:03:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783814504] [2022-12-14 07:03:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:11,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:11,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:03:11,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:03:11,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:03:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:12,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 07:03:12,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:03:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 07:03:12,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:03:12,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783814504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:12,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:03:12,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 07:03:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2640397] [2022-12-14 07:03:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:12,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:03:12,196 INFO L87 Difference]: Start difference. First operand 997 states and 1261 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 07:03:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:12,440 INFO L93 Difference]: Finished difference Result 1567 states and 1939 transitions. [2022-12-14 07:03:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:12,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 158 [2022-12-14 07:03:12,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:12,445 INFO L225 Difference]: With dead ends: 1567 [2022-12-14 07:03:12,445 INFO L226 Difference]: Without dead ends: 1565 [2022-12-14 07:03:12,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:03:12,446 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:12,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 27 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-12-14 07:03:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2022-12-14 07:03:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.2384910485933505) internal successors, (1937), 1564 states have internal predecessors, (1937), 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 07:03:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1937 transitions. [2022-12-14 07:03:12,484 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1937 transitions. Word has length 158 [2022-12-14 07:03:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:12,484 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 1937 transitions. [2022-12-14 07:03:12,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 07:03:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1937 transitions. [2022-12-14 07:03:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-14 07:03:12,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:12,486 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:03:12,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:03:12,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:12,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:12,688 INFO L85 PathProgramCache]: Analyzing trace with hash -274598669, now seen corresponding path program 1 times [2022-12-14 07:03:12,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:12,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635304704] [2022-12-14 07:03:12,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:12,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-12-14 07:03:12,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:12,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635304704] [2022-12-14 07:03:12,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635304704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:12,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:12,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:03:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890969791] [2022-12-14 07:03:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:03:12,804 INFO L87 Difference]: Start difference. First operand 1565 states and 1937 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 07:03:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:13,040 INFO L93 Difference]: Finished difference Result 3413 states and 4235 transitions. [2022-12-14 07:03:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:13,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 175 [2022-12-14 07:03:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:13,045 INFO L225 Difference]: With dead ends: 3413 [2022-12-14 07:03:13,045 INFO L226 Difference]: Without dead ends: 1636 [2022-12-14 07:03:13,047 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 07:03:13,047 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:13,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 126 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-12-14 07:03:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1494. [2022-12-14 07:03:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.1299397186872069) internal successors, (1687), 1493 states have internal predecessors, (1687), 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 07:03:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1687 transitions. [2022-12-14 07:03:13,081 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1687 transitions. Word has length 175 [2022-12-14 07:03:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:13,081 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1687 transitions. [2022-12-14 07:03:13,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 07:03:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1687 transitions. [2022-12-14 07:03:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-14 07:03:13,092 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:13,092 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-12-14 07:03:13,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:03:13,092 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1572857775, now seen corresponding path program 1 times [2022-12-14 07:03:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:13,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021751045] [2022-12-14 07:03:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:13,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 156 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-14 07:03:13,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:13,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021751045] [2022-12-14 07:03:13,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021751045] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:03:13,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470936570] [2022-12-14 07:03:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:13,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:13,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:03:13,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:03:13,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:03:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:13,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 07:03:13,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:03:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 07:03:13,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:03:13,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470936570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:13,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:03:13,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 07:03:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702015900] [2022-12-14 07:03:13,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:13,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:03:13,542 INFO L87 Difference]: Start difference. First operand 1494 states and 1687 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 07:03:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:13,744 INFO L93 Difference]: Finished difference Result 3413 states and 3864 transitions. [2022-12-14 07:03:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 195 [2022-12-14 07:03:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:13,747 INFO L225 Difference]: With dead ends: 3413 [2022-12-14 07:03:13,748 INFO L226 Difference]: Without dead ends: 1920 [2022-12-14 07:03:13,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:03:13,749 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:13,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-12-14 07:03:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1565. [2022-12-14 07:03:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.1349104859335037) internal successors, (1775), 1564 states have internal predecessors, (1775), 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 07:03:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1775 transitions. [2022-12-14 07:03:13,771 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1775 transitions. Word has length 195 [2022-12-14 07:03:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:13,771 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 1775 transitions. [2022-12-14 07:03:13,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 07:03:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1775 transitions. [2022-12-14 07:03:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-12-14 07:03:13,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:13,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-12-14 07:03:13,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:03:13,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:13,976 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash -745261729, now seen corresponding path program 1 times [2022-12-14 07:03:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:13,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339609583] [2022-12-14 07:03:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:13,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 161 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-14 07:03:14,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:14,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339609583] [2022-12-14 07:03:14,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339609583] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:03:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779827078] [2022-12-14 07:03:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:14,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:14,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:03:14,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:03:14,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:03:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:14,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 07:03:14,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:03:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-14 07:03:14,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:03:14,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779827078] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:14,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:03:14,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 07:03:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906972884] [2022-12-14 07:03:14,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:14,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:03:14,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:03:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:03:14,477 INFO L87 Difference]: Start difference. First operand 1565 states and 1775 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 07:03:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:14,673 INFO L93 Difference]: Finished difference Result 2985 states and 3396 transitions. [2022-12-14 07:03:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:03:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 200 [2022-12-14 07:03:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:14,674 INFO L225 Difference]: With dead ends: 2985 [2022-12-14 07:03:14,674 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:03:14,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:03:14,677 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 37 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:14,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 99 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:03:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:03:14,678 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 07:03:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:03:14,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 200 [2022-12-14 07:03:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:14,679 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:03:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 07:03:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:03:14,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:03:14,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 07:03:14,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 07:03:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 07:03:14,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-12-14 07:03:15,618 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-12-14 07:03:15,619 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-12-14 07:03:15,620 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 07:03:15,621 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-12-14 07:03:15,622 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-12-14 07:03:15,623 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-12-14 07:03:15,623 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-12-14 07:03:15,623 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-12-14 07:03:15,623 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-12-14 07:03:15,623 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse5 (= ~a16~0 6)) (.cse0 (<= ~a20~0 0)) (.cse6 (= ~a17~0 0)) (.cse8 (<= ~a8~0 13)) (.cse3 (<= ~a16~0 5)) (.cse4 (<= ~a7~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse7 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse1 .cse2) (and .cse0 .cse1 .cse6) (and .cse5 .cse1 .cse6) (and (<= 5 ~a16~0) .cse1 .cse7 .cse6) (and .cse8 .cse7 .cse6) (and .cse8 .cse1 .cse2 .cse7) (and .cse0 .cse8 .cse2 .cse3) (and .cse4 .cse1 .cse7 .cse6) (and .cse8 .cse2 .cse3 .cse7) (and .cse4 .cse1 .cse2 .cse7))) [2022-12-14 07:03:15,623 INFO L899 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L895 garLoopResultBuilder]: At program point calculate_output_returnLabel#1(lines 40 585) the Hoare annotation is: (let ((.cse5 (= ~a16~0 6)) (.cse0 (<= ~a20~0 0)) (.cse6 (= ~a17~0 0)) (.cse8 (<= ~a8~0 13)) (.cse3 (<= ~a16~0 5)) (.cse4 (<= ~a7~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse7 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5 .cse1 .cse2) (and .cse0 .cse1 .cse6) (and .cse5 .cse1 .cse6) (and (<= 5 ~a16~0) .cse1 .cse7 .cse6) (and .cse8 .cse7 .cse6) (and .cse8 .cse1 .cse2 .cse7) (and .cse0 .cse8 .cse2 .cse3) (and .cse4 .cse1 .cse7 .cse6) (and .cse8 .cse2 .cse3 .cse7) (and .cse4 .cse1 .cse2 .cse7))) [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 462) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-12-14 07:03:15,624 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-12-14 07:03:15,625 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-12-14 07:03:15,627 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:03:15,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:03:15,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:03:15 BoogieIcfgContainer [2022-12-14 07:03:15,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:03:15,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:03:15,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:03:15,646 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:03:15,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:03:07" (3/4) ... [2022-12-14 07:03:15,649 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 07:03:15,661 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-12-14 07:03:15,661 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-12-14 07:03:15,662 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 07:03:15,662 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 07:03:15,716 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:03:15,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:03:15,716 INFO L158 Benchmark]: Toolchain (without parser) took 9347.33ms. Allocated memory was 115.3MB in the beginning and 222.3MB in the end (delta: 107.0MB). Free memory was 73.4MB in the beginning and 128.2MB in the end (delta: -54.8MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2022-12-14 07:03:15,716 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 115.3MB. Free memory was 60.6MB in the beginning and 60.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:03:15,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.49ms. Allocated memory was 115.3MB in the beginning and 153.1MB in the end (delta: 37.7MB). Free memory was 73.4MB in the beginning and 121.0MB in the end (delta: -47.6MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-12-14 07:03:15,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.09ms. Allocated memory is still 153.1MB. Free memory was 121.0MB in the beginning and 114.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 07:03:15,717 INFO L158 Benchmark]: Boogie Preprocessor took 57.32ms. Allocated memory is still 153.1MB. Free memory was 114.7MB in the beginning and 110.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 07:03:15,717 INFO L158 Benchmark]: RCFGBuilder took 1029.80ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 102.2MB in the end (delta: 8.3MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2022-12-14 07:03:15,717 INFO L158 Benchmark]: TraceAbstraction took 7657.22ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 102.2MB in the beginning and 139.7MB in the end (delta: -37.5MB). Peak memory consumption was 118.8MB. Max. memory is 16.1GB. [2022-12-14 07:03:15,718 INFO L158 Benchmark]: Witness Printer took 69.77ms. Allocated memory is still 222.3MB. Free memory was 139.7MB in the beginning and 128.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 07:03:15,720 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 115.3MB. Free memory was 60.6MB in the beginning and 60.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.49ms. Allocated memory was 115.3MB in the beginning and 153.1MB in the end (delta: 37.7MB). Free memory was 73.4MB in the beginning and 121.0MB in the end (delta: -47.6MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.09ms. Allocated memory is still 153.1MB. Free memory was 121.0MB in the beginning and 114.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.32ms. Allocated memory is still 153.1MB. Free memory was 114.7MB in the beginning and 110.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1029.80ms. Allocated memory is still 153.1MB. Free memory was 110.6MB in the beginning and 102.2MB in the end (delta: 8.3MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7657.22ms. Allocated memory was 153.1MB in the beginning and 222.3MB in the end (delta: 69.2MB). Free memory was 102.2MB in the beginning and 139.7MB in the end (delta: -37.5MB). Peak memory consumption was 118.8MB. Max. memory is 16.1GB. * Witness Printer took 69.77ms. Allocated memory is still 222.3MB. Free memory was 139.7MB in the beginning and 128.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. 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: 462]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 719 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 719 mSDsluCounter, 759 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 693 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2871 IncrementalHoareTripleChecker+Invalid, 3564 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 693 mSolverCounterUnsat, 706 mSDtfsCounter, 2871 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 585 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1565occurred in iteration=9, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 923 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 277 HoareAnnotationTreeSize, 3 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3256 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2099 NumberOfCodeBlocks, 2099 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2084 ConstructedInterpolants, 0 QuantifiedInterpolants, 4280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1278 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 1771/1804 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: 40]: Loop Invariant Derived loop invariant: ((((((((((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) || ((((a7 <= 0 && a20 <= 0) && a16 == 6) && a21 == 1) && a17 == 1)) || ((a20 <= 0 && a21 == 1) && a17 == 0)) || ((a16 == 6 && a21 == 1) && a17 == 0)) || (((5 <= a16 && a21 == 1) && a20 == 1) && a17 == 0)) || ((a8 <= 13 && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a21 == 1) && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a17 == 1) && a16 <= 5) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1) - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) || ((((a7 <= 0 && a20 <= 0) && a16 == 6) && a21 == 1) && a17 == 1)) || ((a20 <= 0 && a21 == 1) && a17 == 0)) || ((a16 == 6 && a21 == 1) && a17 == 0)) || (((5 <= a16 && a21 == 1) && a20 == 1) && a17 == 0)) || ((a8 <= 13 && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a21 == 1) && a20 == 1) && a17 == 0)) || (((a8 <= 13 && a17 == 1) && a16 <= 5) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 07:03:15,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55565b36-1e51-45df-b66e-1d865113945f/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