./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW --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 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 --- 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-4e7fbc6 [2022-11-23 14:25:51,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:25:51,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:25:51,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:25:51,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:25:51,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:25:51,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:25:51,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:25:51,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:25:51,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:25:51,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:25:51,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:25:51,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:25:51,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:25:51,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:25:51,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:25:51,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:25:51,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:25:51,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:25:51,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:25:51,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:25:51,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:25:51,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:25:51,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:25:51,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:25:51,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:25:51,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:25:51,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:25:51,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:25:51,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:25:51,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:25:51,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:25:51,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:25:51,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:25:51,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:25:51,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:25:51,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:25:51,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:25:51,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:25:51,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:25:51,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:25:51,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:25:51,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:25:51,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:25:51,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:25:51,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:25:51,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:25:51,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:25:51,509 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:25:51,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:25:51,510 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:25:51,510 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:25:51,511 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:25:51,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:25:51,512 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:25:51,512 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:25:51,512 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:25:51,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:25:51,513 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:25:51,513 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:25:51,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:25:51,515 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:25:51,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:25:51,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:25:51,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:25:51,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:25:51,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:25:51,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:25:51,517 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:25:51,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:25:51,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:25:51,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:25:51,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:25:51,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:25:51,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:25:51,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:25:51,519 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:25:51,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:25:51,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:25:51,520 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:25:51,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:25:51,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:25:51,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:25:51,530 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_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 [2022-11-23 14:25:51,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:25:51,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:25:51,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:25:51,899 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:25:51,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:25:51,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2022-11-23 14:25:54,954 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:25:55,251 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:25:55,252 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2022-11-23 14:25:55,262 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/data/7545fbfbf/ceeb3f7379da48d6b072d42be680ae49/FLAGe0d7534c2 [2022-11-23 14:25:55,286 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/data/7545fbfbf/ceeb3f7379da48d6b072d42be680ae49 [2022-11-23 14:25:55,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:25:55,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:25:55,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:25:55,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:25:55,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:25:55,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574ae3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55, skipping insertion in model container [2022-11-23 14:25:55,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:25:55,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:25:55,729 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_2ac8e10b-5c87-4e9b-943c-c974c3150c66/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2022-11-23 14:25:55,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:25:55,827 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:25:56,000 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_2ac8e10b-5c87-4e9b-943c-c974c3150c66/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2022-11-23 14:25:56,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:25:56,042 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:25:56,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56 WrapperNode [2022-11-23 14:25:56,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:25:56,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:25:56,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:25:56,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:25:56,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,147 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-23 14:25:56,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:25:56,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:25:56,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:25:56,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:25:56,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:25:56,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:25:56,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:25:56,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:25:56,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (1/1) ... [2022-11-23 14:25:56,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:25:56,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:25:56,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:25:56,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:25:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:25:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:25:56,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:25:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:25:56,439 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:25:56,441 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:25:57,562 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:25:57,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:25:57,864 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:25:57,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:57 BoogieIcfgContainer [2022-11-23 14:25:57,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:25:57,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:25:57,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:25:57,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:25:57,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:55" (1/3) ... [2022-11-23 14:25:57,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f85e801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:57, skipping insertion in model container [2022-11-23 14:25:57,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:56" (2/3) ... [2022-11-23 14:25:57,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f85e801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:57, skipping insertion in model container [2022-11-23 14:25:57,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:57" (3/3) ... [2022-11-23 14:25:57,882 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2022-11-23 14:25:57,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:25:57,907 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:25:57,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:25:57,984 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;@2928ddf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:25:57,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:25:57,988 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) [2022-11-23 14:25:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 14:25:58,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:25:58,002 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] [2022-11-23 14:25:58,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:25:58,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:25:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash 379025031, now seen corresponding path program 1 times [2022-11-23 14:25:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:25:58,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008657902] [2022-11-23 14:25:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:25:58,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:25:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:25:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:25:58,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:25:58,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008657902] [2022-11-23 14:25:58,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008657902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:25:58,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:25:58,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:25:58,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764801962] [2022-11-23 14:25:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:25:58,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:25:58,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:25:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:25:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:25:58,617 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) [2022-11-23 14:25:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:25:59,132 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-23 14:25:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:25:59,135 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 [2022-11-23 14:25:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:25:59,151 INFO L225 Difference]: With dead ends: 224 [2022-11-23 14:25:59,151 INFO L226 Difference]: Without dead ends: 145 [2022-11-23 14:25:59,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:25:59,160 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:25:59,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:25:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-23 14:25:59,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-23 14:25:59,202 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) [2022-11-23 14:25:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2022-11-23 14:25:59,205 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2022-11-23 14:25:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:25:59,206 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2022-11-23 14:25:59,206 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) [2022-11-23 14:25:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2022-11-23 14:25:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 14:25:59,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:25:59,209 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] [2022-11-23 14:25:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:25:59,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:25:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:25:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1708132031, now seen corresponding path program 1 times [2022-11-23 14:25:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:25:59,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528884318] [2022-11-23 14:25:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:25:59,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:25:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:25:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:25:59,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:25:59,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528884318] [2022-11-23 14:25:59,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528884318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:25:59,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:25:59,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:25:59,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745190053] [2022-11-23 14:25:59,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:25:59,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:25:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:25:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:25:59,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:25:59,311 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) [2022-11-23 14:25:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:25:59,784 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2022-11-23 14:25:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:25:59,785 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 [2022-11-23 14:25:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:25:59,789 INFO L225 Difference]: With dead ends: 431 [2022-11-23 14:25:59,790 INFO L226 Difference]: Without dead ends: 287 [2022-11-23 14:25:59,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:25:59,799 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:25:59,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:25:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-23 14:25:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-23 14:25:59,838 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) [2022-11-23 14:25:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2022-11-23 14:25:59,840 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2022-11-23 14:25:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:25:59,840 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2022-11-23 14:25:59,840 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) [2022-11-23 14:25:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2022-11-23 14:25:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 14:25:59,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:25:59,843 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] [2022-11-23 14:25:59,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:25:59,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:25:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:25:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash 714043750, now seen corresponding path program 1 times [2022-11-23 14:25:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:25:59,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693461965] [2022-11-23 14:25:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:25:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:25:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:00,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:00,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693461965] [2022-11-23 14:26:00,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693461965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:00,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:00,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779358242] [2022-11-23 14:26:00,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:00,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:00,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:00,212 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) [2022-11-23 14:26:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:00,559 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2022-11-23 14:26:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:00,560 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 [2022-11-23 14:26:00,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:00,562 INFO L225 Difference]: With dead ends: 786 [2022-11-23 14:26:00,562 INFO L226 Difference]: Without dead ends: 500 [2022-11-23 14:26:00,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:00,564 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:00,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:26:00,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-23 14:26:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2022-11-23 14:26:00,581 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) [2022-11-23 14:26:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2022-11-23 14:26:00,583 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2022-11-23 14:26:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:00,583 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2022-11-23 14:26:00,583 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) [2022-11-23 14:26:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2022-11-23 14:26:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 14:26:00,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:00,586 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] [2022-11-23 14:26:00,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:26:00,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash 763853046, now seen corresponding path program 1 times [2022-11-23 14:26:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:00,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188593407] [2022-11-23 14:26:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:26:00,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188593407] [2022-11-23 14:26:00,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188593407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:00,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:00,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:00,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024458837] [2022-11-23 14:26:00,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:00,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:00,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:00,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:00,781 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) [2022-11-23 14:26:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:01,178 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2022-11-23 14:26:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:01,179 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 [2022-11-23 14:26:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:01,181 INFO L225 Difference]: With dead ends: 999 [2022-11-23 14:26:01,182 INFO L226 Difference]: Without dead ends: 571 [2022-11-23 14:26:01,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:01,184 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 67 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:01,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 70 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:26:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-23 14:26:01,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2022-11-23 14:26:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5330661322645291) internal successors, (765), 499 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 765 transitions. [2022-11-23 14:26:01,207 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 765 transitions. Word has length 87 [2022-11-23 14:26:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:01,208 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 765 transitions. [2022-11-23 14:26:01,208 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) [2022-11-23 14:26:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 765 transitions. [2022-11-23 14:26:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 14:26:01,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:01,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:01,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:26:01,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:01,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2105966382, now seen corresponding path program 1 times [2022-11-23 14:26:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:01,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871272037] [2022-11-23 14:26:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:26:01,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:01,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871272037] [2022-11-23 14:26:01,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871272037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:01,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:01,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037965238] [2022-11-23 14:26:01,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:01,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:01,375 INFO L87 Difference]: Start difference. First operand 500 states and 765 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:01,735 INFO L93 Difference]: Finished difference Result 1141 states and 1762 transitions. [2022-11-23 14:26:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:01,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-23 14:26:01,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:01,742 INFO L225 Difference]: With dead ends: 1141 [2022-11-23 14:26:01,742 INFO L226 Difference]: Without dead ends: 642 [2022-11-23 14:26:01,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:01,744 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:01,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 57 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:26:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-11-23 14:26:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-11-23 14:26:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2022-11-23 14:26:01,764 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 91 [2022-11-23 14:26:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:01,764 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2022-11-23 14:26:01,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2022-11-23 14:26:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-23 14:26:01,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:01,768 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:01,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:26:01,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash 768862906, now seen corresponding path program 1 times [2022-11-23 14:26:01,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:01,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50522146] [2022-11-23 14:26:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:01,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 14:26:02,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:02,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50522146] [2022-11-23 14:26:02,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50522146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:02,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:02,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:26:02,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683109160] [2022-11-23 14:26:02,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:26:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:26:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:02,171 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:02,762 INFO L93 Difference]: Finished difference Result 1567 states and 2289 transitions. [2022-11-23 14:26:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:26:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 120 [2022-11-23 14:26:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:02,766 INFO L225 Difference]: With dead ends: 1567 [2022-11-23 14:26:02,766 INFO L226 Difference]: Without dead ends: 926 [2022-11-23 14:26:02,767 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 [2022-11-23 14:26:02,768 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 152 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:02,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 55 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:26:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-23 14:26:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2022-11-23 14:26:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4379391100702577) internal successors, (1228), 854 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1228 transitions. [2022-11-23 14:26:02,790 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1228 transitions. Word has length 120 [2022-11-23 14:26:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:02,790 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1228 transitions. [2022-11-23 14:26:02,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1228 transitions. [2022-11-23 14:26:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-23 14:26:02,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:02,793 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:26:02,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:02,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1488493789, now seen corresponding path program 1 times [2022-11-23 14:26:02,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:02,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106394383] [2022-11-23 14:26:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:02,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:26:03,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:03,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106394383] [2022-11-23 14:26:03,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106394383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:03,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:03,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:03,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271244262] [2022-11-23 14:26:03,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:03,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:26:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:26:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:03,087 INFO L87 Difference]: Start difference. First operand 855 states and 1228 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:03,628 INFO L93 Difference]: Finished difference Result 1851 states and 2621 transitions. [2022-11-23 14:26:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:26:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 137 [2022-11-23 14:26:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:03,634 INFO L225 Difference]: With dead ends: 1851 [2022-11-23 14:26:03,634 INFO L226 Difference]: Without dead ends: 997 [2022-11-23 14:26:03,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:03,636 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 104 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:03,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 38 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:26:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-23 14:26:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2022-11-23 14:26:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3747072599531616) internal successors, (1174), 854 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1174 transitions. [2022-11-23 14:26:03,665 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1174 transitions. Word has length 137 [2022-11-23 14:26:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:03,666 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1174 transitions. [2022-11-23 14:26:03,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1174 transitions. [2022-11-23 14:26:03,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-23 14:26:03,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:03,671 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:26:03,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:26:03,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:03,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1747505042, now seen corresponding path program 1 times [2022-11-23 14:26:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:03,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450670714] [2022-11-23 14:26:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:26:03,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:03,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450670714] [2022-11-23 14:26:03,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450670714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:03,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:03,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:26:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081486146] [2022-11-23 14:26:03,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:03,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:03,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:03,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:03,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:03,858 INFO L87 Difference]: Start difference. First operand 855 states and 1174 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:04,228 INFO L93 Difference]: Finished difference Result 1851 states and 2513 transitions. [2022-11-23 14:26:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:04,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 164 [2022-11-23 14:26:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:04,232 INFO L225 Difference]: With dead ends: 1851 [2022-11-23 14:26:04,232 INFO L226 Difference]: Without dead ends: 997 [2022-11-23 14:26:04,233 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 [2022-11-23 14:26:04,234 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:04,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 124 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:26:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-23 14:26:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-11-23 14:26:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2940540540540542) internal successors, (1197), 925 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:04,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1197 transitions. [2022-11-23 14:26:04,257 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1197 transitions. Word has length 164 [2022-11-23 14:26:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:04,258 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1197 transitions. [2022-11-23 14:26:04,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:04,258 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1197 transitions. [2022-11-23 14:26:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-23 14:26:04,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:04,261 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-23 14:26:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:26:04,262 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash 243934839, now seen corresponding path program 1 times [2022-11-23 14:26:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:04,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518606454] [2022-11-23 14:26:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:04,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-23 14:26:04,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:04,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518606454] [2022-11-23 14:26:04,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518606454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:04,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:04,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:04,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312283537] [2022-11-23 14:26:04,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:04,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:04,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:04,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:04,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:04,500 INFO L87 Difference]: Start difference. First operand 926 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:04,790 INFO L93 Difference]: Finished difference Result 1141 states and 1459 transitions. [2022-11-23 14:26:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:04,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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 186 [2022-11-23 14:26:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:04,795 INFO L225 Difference]: With dead ends: 1141 [2022-11-23 14:26:04,795 INFO L226 Difference]: Without dead ends: 1139 [2022-11-23 14:26:04,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:04,796 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:04,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:26:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-11-23 14:26:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 926. [2022-11-23 14:26:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2929729729729729) internal successors, (1196), 925 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1196 transitions. [2022-11-23 14:26:04,820 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1196 transitions. Word has length 186 [2022-11-23 14:26:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:04,821 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1196 transitions. [2022-11-23 14:26:04,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1196 transitions. [2022-11-23 14:26:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-23 14:26:04,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:04,825 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-11-23 14:26:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:26:04,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1896309135, now seen corresponding path program 1 times [2022-11-23 14:26:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:04,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230911780] [2022-11-23 14:26:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:26:05,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:05,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230911780] [2022-11-23 14:26:05,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230911780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:26:05,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905902995] [2022-11-23 14:26:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:05,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:05,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:05,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:26:05,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:26:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:05,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:26:06,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-23 14:26:06,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:26:06,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905902995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:06,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:26:06,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 14:26:06,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912901397] [2022-11-23 14:26:06,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:06,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:06,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:06,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:06,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:26:06,250 INFO L87 Difference]: Start difference. First operand 926 states and 1196 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:06,580 INFO L93 Difference]: Finished difference Result 1849 states and 2390 transitions. [2022-11-23 14:26:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 241 [2022-11-23 14:26:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:06,581 INFO L225 Difference]: With dead ends: 1849 [2022-11-23 14:26:06,581 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:26:06,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:26:06,583 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:06,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:26:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:26:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:26:06,584 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) [2022-11-23 14:26:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:26:06,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2022-11-23 14:26:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:06,585 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:26:06,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:26:06,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:26:06,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:26:06,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:26:06,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:06,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:26:07,196 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-23 14:26:07,196 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-23 14:26:07,196 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-23 14:26:07,197 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-23 14:26:07,197 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-23 14:26:07,197 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-23 14:26:07,197 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-23 14:26:07,197 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-23 14:26:07,197 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-23 14:26:07,197 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-23 14:26:07,198 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-23 14:26:07,199 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-23 14:26:07,199 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-23 14:26:07,199 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-23 14:26:07,199 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-23 14:26:07,200 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-23 14:26:07,200 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-23 14:26:07,200 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-23 14:26:07,201 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-23 14:26:07,202 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-23 14:26:07,202 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-23 14:26:07,202 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-23 14:26:07,202 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-23 14:26:07,202 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-23 14:26:07,202 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-23 14:26:07,202 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-23 14:26:07,203 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-23 14:26:07,203 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-23 14:26:07,203 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-23 14:26:07,203 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-23 14:26:07,203 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-23 14:26:07,203 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-23 14:26:07,203 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-23 14:26:07,204 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-23 14:26:07,204 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-23 14:26:07,204 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-23 14:26:07,204 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:26:07,204 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-23 14:26:07,204 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-23 14:26:07,204 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-23 14:26:07,205 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (<= ~a21~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse1) (and .cse2 .cse0 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1)))) [2022-11-23 14:26:07,205 INFO L899 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2022-11-23 14:26:07,205 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-23 14:26:07,205 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-23 14:26:07,206 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-23 14:26:07,206 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-23 14:26:07,206 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-23 14:26:07,206 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-23 14:26:07,206 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-23 14:26:07,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:26:07,206 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-23 14:26:07,207 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-23 14:26:07,207 INFO L899 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2022-11-23 14:26:07,207 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-23 14:26:07,207 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-23 14:26:07,207 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-23 14:26:07,207 INFO L899 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2022-11-23 14:26:07,207 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-23 14:26:07,207 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-23 14:26:07,208 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-23 14:26:07,208 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-23 14:26:07,208 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-23 14:26:07,208 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-23 14:26:07,208 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-23 14:26:07,208 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-23 14:26:07,208 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-23 14:26:07,209 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-23 14:26:07,210 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (<= ~a21~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse1) (and .cse2 .cse0 (<= 15 ~a8~0)) (and .cse0 (= ~a20~0 1)))) [2022-11-23 14:26:07,210 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-23 14:26:07,210 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 522) no Hoare annotation was computed. [2022-11-23 14:26:07,210 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-23 14:26:07,210 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-23 14:26:07,211 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-23 14:26:07,211 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-23 14:26:07,211 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-23 14:26:07,211 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-23 14:26:07,214 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:07,217 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:26:07,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:26:07 BoogieIcfgContainer [2022-11-23 14:26:07,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:26:07,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:26:07,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:26:07,242 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:26:07,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:57" (3/4) ... [2022-11-23 14:26:07,245 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:26:07,271 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-23 14:26:07,272 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-23 14:26:07,273 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-23 14:26:07,274 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:26:07,403 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:26:07,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:26:07,404 INFO L158 Benchmark]: Toolchain (without parser) took 12105.64ms. Allocated memory was 138.4MB in the beginning and 320.9MB in the end (delta: 182.5MB). Free memory was 73.6MB in the beginning and 213.2MB in the end (delta: -139.6MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2022-11-23 14:26:07,404 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:26:07,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 742.28ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 73.3MB in the beginning and 150.1MB in the end (delta: -76.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 14:26:07,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.56ms. Allocated memory is still 205.5MB. Free memory was 150.1MB in the beginning and 143.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 14:26:07,405 INFO L158 Benchmark]: Boogie Preprocessor took 62.13ms. Allocated memory is still 205.5MB. Free memory was 143.9MB in the beginning and 139.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:26:07,406 INFO L158 Benchmark]: RCFGBuilder took 1652.68ms. Allocated memory is still 205.5MB. Free memory was 139.7MB in the beginning and 83.0MB in the end (delta: 56.7MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2022-11-23 14:26:07,407 INFO L158 Benchmark]: TraceAbstraction took 9371.00ms. Allocated memory was 205.5MB in the beginning and 320.9MB in the end (delta: 115.3MB). Free memory was 81.9MB in the beginning and 224.7MB in the end (delta: -142.8MB). Peak memory consumption was 104.7MB. Max. memory is 16.1GB. [2022-11-23 14:26:07,407 INFO L158 Benchmark]: Witness Printer took 161.95ms. Allocated memory is still 320.9MB. Free memory was 223.7MB in the beginning and 213.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:26:07,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 742.28ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 73.3MB in the beginning and 150.1MB in the end (delta: -76.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.56ms. Allocated memory is still 205.5MB. Free memory was 150.1MB in the beginning and 143.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.13ms. Allocated memory is still 205.5MB. Free memory was 143.9MB in the beginning and 139.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1652.68ms. Allocated memory is still 205.5MB. Free memory was 139.7MB in the beginning and 83.0MB in the end (delta: 56.7MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9371.00ms. Allocated memory was 205.5MB in the beginning and 320.9MB in the end (delta: 115.3MB). Free memory was 81.9MB in the beginning and 224.7MB in the end (delta: -142.8MB). Peak memory consumption was 104.7MB. Max. memory is 16.1GB. * Witness Printer took 161.95ms. Allocated memory is still 320.9MB. Free memory was 223.7MB in the beginning and 213.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: 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: 9.3s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 641 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 641 mSDsluCounter, 588 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 694 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2457 IncrementalHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 694 mSolverCounterUnsat, 543 mSDtfsCounter, 2457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=8, InterpolantAutomatonStates: 32, 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, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 31 NumberOfFragments, 79 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1674 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1500 NumberOfCodeBlocks, 1500 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1489 ConstructedInterpolants, 0 QuantifiedInterpolants, 4332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 534 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 1234/1376 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: 593]: Loop Invariant Derived loop invariant: ((((a21 == 1 && a16 <= 5) || (a16 == 6 && a21 <= 0)) || (a21 <= 0 && a16 <= 5)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || (a21 == 1 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((a21 == 1 && a16 <= 5) || (a16 == 6 && a21 <= 0)) || (a21 <= 0 && a16 <= 5)) || ((a16 == 6 && a21 == 1) && 15 <= a8)) || (a21 == 1 && a20 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-23 14:26:07,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ac8e10b-5c87-4e9b-943c-c974c3150c66/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE