./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e96a4dadf08c19b3d92d901d7f9116f0323f4fb1660ac2537112df0afe321751 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:25:34,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:25:34,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:25:34,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:25:34,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:25:34,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:25:34,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:25:34,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:25:34,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:25:34,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:25:34,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:25:34,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:25:34,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:25:34,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:25:34,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:25:34,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:25:34,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:25:34,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:25:34,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:25:34,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:25:34,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:25:34,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:25:34,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:25:34,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:25:34,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:25:34,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:25:34,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:25:34,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:25:34,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:25:34,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:25:34,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:25:34,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:25:34,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:25:34,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:25:34,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:25:34,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:25:34,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:25:34,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:25:34,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:25:34,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:25:34,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:25:34,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:25:34,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:25:34,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:25:34,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:25:34,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:25:34,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:25:34,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:25:34,081 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:25:34,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:25:34,081 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:25:34,081 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:25:34,081 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:25:34,082 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:25:34,082 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:25:34,082 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:25:34,082 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:25:34,082 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:25:34,082 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:25:34,083 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:25:34,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:25:34,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:25:34,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:25:34,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:25:34,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:25:34,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:25:34,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:25:34,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:25:34,085 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:25:34,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:25:34,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:25:34,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:25:34,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:25:34,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:25:34,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:25:34,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:25:34,086 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:25:34,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:25:34,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:25:34,087 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:25:34,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:25:34,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:25:34,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:25:34,087 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_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e96a4dadf08c19b3d92d901d7f9116f0323f4fb1660ac2537112df0afe321751 [2022-12-14 14:25:34,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:25:34,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:25:34,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:25:34,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:25:34,304 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:25:34,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/token_ring.03.cil-1.c [2022-12-14 14:25:36,890 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:25:37,052 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:25:37,052 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/sv-benchmarks/c/systemc/token_ring.03.cil-1.c [2022-12-14 14:25:37,061 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/data/c04d6df63/06159e0890e441da851e030c260e3ea4/FLAG0caef5acb [2022-12-14 14:25:37,075 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/data/c04d6df63/06159e0890e441da851e030c260e3ea4 [2022-12-14 14:25:37,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:25:37,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:25:37,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:25:37,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:25:37,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:25:37,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704261c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37, skipping insertion in model container [2022-12-14 14:25:37,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:25:37,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:25:37,221 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_745ade81-e54b-48d3-8b09-046418ab4604/sv-benchmarks/c/systemc/token_ring.03.cil-1.c[671,684] [2022-12-14 14:25:37,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:25:37,289 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:25:37,297 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_745ade81-e54b-48d3-8b09-046418ab4604/sv-benchmarks/c/systemc/token_ring.03.cil-1.c[671,684] [2022-12-14 14:25:37,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:25:37,334 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:25:37,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37 WrapperNode [2022-12-14 14:25:37,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:25:37,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:25:37,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:25:37,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:25:37,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,370 INFO L138 Inliner]: procedures = 34, calls = 41, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 336 [2022-12-14 14:25:37,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:25:37,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:25:37,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:25:37,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:25:37,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:25:37,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:25:37,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:25:37,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:25:37,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (1/1) ... [2022-12-14 14:25:37,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:25:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:37,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:25:37,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:25:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:25:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-14 14:25:37,467 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-14 14:25:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 14:25:37,467 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 14:25:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 14:25:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 14:25:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 14:25:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 14:25:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 14:25:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 14:25:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 14:25:37,468 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 14:25:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:25:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 14:25:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 14:25:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:25:37,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:25:37,540 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:25:37,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:25:37,839 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:25:37,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:25:37,995 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-14 14:25:37,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:25:37 BoogieIcfgContainer [2022-12-14 14:25:37,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:25:37,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:25:37,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:25:38,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:25:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:25:37" (1/3) ... [2022-12-14 14:25:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502f294a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:25:38, skipping insertion in model container [2022-12-14 14:25:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:37" (2/3) ... [2022-12-14 14:25:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502f294a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:25:38, skipping insertion in model container [2022-12-14 14:25:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:25:37" (3/3) ... [2022-12-14 14:25:38,010 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-1.c [2022-12-14 14:25:38,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:25:38,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:25:38,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:25:38,077 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;@74a287e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:25:38,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:25:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 71 states have internal predecessors, (102), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-14 14:25:38,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-14 14:25:38,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:38,088 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] [2022-12-14 14:25:38,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1919137781, now seen corresponding path program 1 times [2022-12-14 14:25:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:38,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520944524] [2022-12-14 14:25:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:38,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:25:38,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:38,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520944524] [2022-12-14 14:25:38,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520944524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:38,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:38,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:25:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189436922] [2022-12-14 14:25:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:38,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:25:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:38,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:25:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:38,408 INFO L87 Difference]: Start difference. First operand has 95 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 71 states have internal predecessors, (102), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 14:25:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:38,652 INFO L93 Difference]: Finished difference Result 262 states and 393 transitions. [2022-12-14 14:25:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:25:38,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-12-14 14:25:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:38,664 INFO L225 Difference]: With dead ends: 262 [2022-12-14 14:25:38,665 INFO L226 Difference]: Without dead ends: 168 [2022-12-14 14:25:38,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:38,672 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 223 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:38,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 318 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:25:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-14 14:25:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-12-14 14:25:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 125 states have internal predecessors, (174), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-14 14:25:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 236 transitions. [2022-12-14 14:25:38,728 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 236 transitions. Word has length 40 [2022-12-14 14:25:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:38,728 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 236 transitions. [2022-12-14 14:25:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 14:25:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 236 transitions. [2022-12-14 14:25:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:25:38,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:38,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:25:38,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1647721385, now seen corresponding path program 1 times [2022-12-14 14:25:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:38,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077528855] [2022-12-14 14:25:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:25:38,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:38,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077528855] [2022-12-14 14:25:38,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077528855] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:38,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415190587] [2022-12-14 14:25:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:38,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:38,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:38,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:38,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:25:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:38,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:25:38,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 14:25:39,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:39,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415190587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:39,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:39,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 14:25:39,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523660994] [2022-12-14 14:25:39,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:39,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:39,065 INFO L87 Difference]: Start difference. First operand 167 states and 236 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 14:25:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:39,156 INFO L93 Difference]: Finished difference Result 484 states and 693 transitions. [2022-12-14 14:25:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-12-14 14:25:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:39,161 INFO L225 Difference]: With dead ends: 484 [2022-12-14 14:25:39,161 INFO L226 Difference]: Without dead ends: 322 [2022-12-14 14:25:39,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:39,164 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 105 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:39,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 247 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:25:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-12-14 14:25:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2022-12-14 14:25:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 235 states have (on average 1.4170212765957446) internal successors, (333), 239 states have internal predecessors, (333), 56 states have call successors, (56), 25 states have call predecessors, (56), 24 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 14:25:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 443 transitions. [2022-12-14 14:25:39,204 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 443 transitions. Word has length 73 [2022-12-14 14:25:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:39,205 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 443 transitions. [2022-12-14 14:25:39,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 14:25:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 443 transitions. [2022-12-14 14:25:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:25:39,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:39,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:39,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:25:39,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:39,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash 160127655, now seen corresponding path program 1 times [2022-12-14 14:25:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:39,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813024538] [2022-12-14 14:25:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:25:39,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:39,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813024538] [2022-12-14 14:25:39,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813024538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:39,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668838803] [2022-12-14 14:25:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:39,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:39,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:39,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:39,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:25:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:39,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:25:39,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 14:25:39,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:39,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668838803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:39,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:39,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-14 14:25:39,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234149549] [2022-12-14 14:25:39,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:39,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:39,643 INFO L87 Difference]: Start difference. First operand 316 states and 443 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 14:25:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:39,740 INFO L93 Difference]: Finished difference Result 925 states and 1314 transitions. [2022-12-14 14:25:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-12-14 14:25:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:39,747 INFO L225 Difference]: With dead ends: 925 [2022-12-14 14:25:39,748 INFO L226 Difference]: Without dead ends: 614 [2022-12-14 14:25:39,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:39,752 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 108 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:39,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 246 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:25:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-12-14 14:25:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 606. [2022-12-14 14:25:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 455 states have (on average 1.4043956043956043) internal successors, (639), 461 states have internal predecessors, (639), 102 states have call successors, (102), 49 states have call predecessors, (102), 48 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2022-12-14 14:25:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 841 transitions. [2022-12-14 14:25:39,794 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 841 transitions. Word has length 73 [2022-12-14 14:25:39,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:39,794 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 841 transitions. [2022-12-14 14:25:39,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-14 14:25:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 841 transitions. [2022-12-14 14:25:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:25:39,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:39,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:39,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:25:39,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:39,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:39,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1272122647, now seen corresponding path program 1 times [2022-12-14 14:25:39,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:39,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487590114] [2022-12-14 14:25:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:40,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:40,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487590114] [2022-12-14 14:25:40,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487590114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:40,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:40,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 14:25:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208921817] [2022-12-14 14:25:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:40,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:25:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:40,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:25:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:40,375 INFO L87 Difference]: Start difference. First operand 606 states and 841 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 14:25:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:40,658 INFO L93 Difference]: Finished difference Result 1918 states and 2664 transitions. [2022-12-14 14:25:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:25:40,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-12-14 14:25:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:40,667 INFO L225 Difference]: With dead ends: 1918 [2022-12-14 14:25:40,667 INFO L226 Difference]: Without dead ends: 1318 [2022-12-14 14:25:40,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:25:40,671 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 351 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:40,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 311 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:25:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-12-14 14:25:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1154. [2022-12-14 14:25:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 867 states have (on average 1.3875432525951557) internal successors, (1203), 877 states have internal predecessors, (1203), 190 states have call successors, (190), 97 states have call predecessors, (190), 96 states have return successors, (188), 180 states have call predecessors, (188), 188 states have call successors, (188) [2022-12-14 14:25:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1581 transitions. [2022-12-14 14:25:40,769 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1581 transitions. Word has length 73 [2022-12-14 14:25:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:40,769 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1581 transitions. [2022-12-14 14:25:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 14:25:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1581 transitions. [2022-12-14 14:25:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 14:25:40,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:40,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-12-14 14:25:40,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:25:40,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:40,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1234070433, now seen corresponding path program 1 times [2022-12-14 14:25:40,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:40,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346496095] [2022-12-14 14:25:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:40,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:40,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346496095] [2022-12-14 14:25:40,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346496095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:40,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587962338] [2022-12-14 14:25:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:40,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:40,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:40,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:40,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:25:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:41,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:25:41,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 14:25:41,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:41,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587962338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:41,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:41,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 14:25:41,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301000203] [2022-12-14 14:25:41,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:41,049 INFO L87 Difference]: Start difference. First operand 1154 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 14:25:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:41,164 INFO L93 Difference]: Finished difference Result 2041 states and 2834 transitions. [2022-12-14 14:25:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:41,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2022-12-14 14:25:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:41,170 INFO L225 Difference]: With dead ends: 2041 [2022-12-14 14:25:41,170 INFO L226 Difference]: Without dead ends: 1437 [2022-12-14 14:25:41,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:41,172 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 45 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:41,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 269 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2022-12-14 14:25:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1306. [2022-12-14 14:25:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1003 states have (on average 1.4147557328015952) internal successors, (1419), 1013 states have internal predecessors, (1419), 198 states have call successors, (198), 105 states have call predecessors, (198), 104 states have return successors, (196), 188 states have call predecessors, (196), 196 states have call successors, (196) [2022-12-14 14:25:41,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1813 transitions. [2022-12-14 14:25:41,226 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1813 transitions. Word has length 86 [2022-12-14 14:25:41,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:41,226 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1813 transitions. [2022-12-14 14:25:41,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 14:25:41,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1813 transitions. [2022-12-14 14:25:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 14:25:41,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:41,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 14:25:41,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:25:41,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:41,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:41,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1561597002, now seen corresponding path program 1 times [2022-12-14 14:25:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988517209] [2022-12-14 14:25:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:41,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-14 14:25:41,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:41,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988517209] [2022-12-14 14:25:41,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988517209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:41,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:41,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:25:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649481159] [2022-12-14 14:25:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:41,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:41,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:25:41,496 INFO L87 Difference]: Start difference. First operand 1306 states and 1813 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 14:25:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:41,629 INFO L93 Difference]: Finished difference Result 3255 states and 4546 transitions. [2022-12-14 14:25:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:41,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 96 [2022-12-14 14:25:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:41,635 INFO L225 Difference]: With dead ends: 3255 [2022-12-14 14:25:41,636 INFO L226 Difference]: Without dead ends: 1954 [2022-12-14 14:25:41,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:25:41,639 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 101 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:41,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 247 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-12-14 14:25:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1938. [2022-12-14 14:25:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1491 states have (on average 1.3997317236753857) internal successors, (2087), 1505 states have internal predecessors, (2087), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2022-12-14 14:25:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2665 transitions. [2022-12-14 14:25:41,747 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2665 transitions. Word has length 96 [2022-12-14 14:25:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:41,747 INFO L495 AbstractCegarLoop]: Abstraction has 1938 states and 2665 transitions. [2022-12-14 14:25:41,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 14:25:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2665 transitions. [2022-12-14 14:25:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 14:25:41,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:41,755 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:41,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:25:41,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash 648694930, now seen corresponding path program 1 times [2022-12-14 14:25:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:41,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918003199] [2022-12-14 14:25:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:41,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 14:25:41,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918003199] [2022-12-14 14:25:41,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918003199] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645702703] [2022-12-14 14:25:41,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:41,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:41,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:41,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:25:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:42,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:25:42,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 14:25:42,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:42,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645702703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:42,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:42,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 14:25:42,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90882734] [2022-12-14 14:25:42,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:42,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:42,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:42,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:42,087 INFO L87 Difference]: Start difference. First operand 1938 states and 2665 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:42,239 INFO L93 Difference]: Finished difference Result 3250 states and 4567 transitions. [2022-12-14 14:25:42,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:42,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 109 [2022-12-14 14:25:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:42,246 INFO L225 Difference]: With dead ends: 3250 [2022-12-14 14:25:42,246 INFO L226 Difference]: Without dead ends: 1950 [2022-12-14 14:25:42,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:42,250 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 100 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:42,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 272 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:42,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-12-14 14:25:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1930. [2022-12-14 14:25:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1483 states have (on average 1.3749157113958193) internal successors, (2039), 1497 states have internal predecessors, (2039), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2022-12-14 14:25:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2617 transitions. [2022-12-14 14:25:42,348 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2617 transitions. Word has length 109 [2022-12-14 14:25:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:42,348 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2617 transitions. [2022-12-14 14:25:42,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2617 transitions. [2022-12-14 14:25:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-14 14:25:42,354 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:42,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:42,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:25:42,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 14:25:42,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1894148112, now seen corresponding path program 1 times [2022-12-14 14:25:42,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:42,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968372604] [2022-12-14 14:25:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 14:25:42,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:42,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968372604] [2022-12-14 14:25:42,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968372604] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:42,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547266355] [2022-12-14 14:25:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:42,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:42,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:42,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:25:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:42,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:25:42,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:25:42,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:42,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547266355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:42,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:42,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 14:25:42,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913133161] [2022-12-14 14:25:42,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:42,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:42,830 INFO L87 Difference]: Start difference. First operand 1930 states and 2617 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:42,977 INFO L93 Difference]: Finished difference Result 3666 states and 4950 transitions. [2022-12-14 14:25:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:42,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2022-12-14 14:25:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:42,984 INFO L225 Difference]: With dead ends: 3666 [2022-12-14 14:25:42,984 INFO L226 Difference]: Without dead ends: 2378 [2022-12-14 14:25:42,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:42,988 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 110 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:42,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 144 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-12-14 14:25:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2378. [2022-12-14 14:25:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 1867 states have (on average 1.3363685056239958) internal successors, (2495), 1881 states have internal predecessors, (2495), 310 states have call successors, (310), 201 states have call predecessors, (310), 200 states have return successors, (308), 296 states have call predecessors, (308), 308 states have call successors, (308) [2022-12-14 14:25:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 3113 transitions. [2022-12-14 14:25:43,121 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 3113 transitions. Word has length 109 [2022-12-14 14:25:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:43,121 INFO L495 AbstractCegarLoop]: Abstraction has 2378 states and 3113 transitions. [2022-12-14 14:25:43,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 3113 transitions. [2022-12-14 14:25:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 14:25:43,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:43,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:43,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:25:43,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 14:25:43,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash 141678917, now seen corresponding path program 1 times [2022-12-14 14:25:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:43,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87179296] [2022-12-14 14:25:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 14:25:43,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:43,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87179296] [2022-12-14 14:25:43,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87179296] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:43,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312264114] [2022-12-14 14:25:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:43,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:43,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:43,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:43,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:25:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:43,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:25:43,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:25:43,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:43,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312264114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:43,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:43,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 14:25:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995022928] [2022-12-14 14:25:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:43,612 INFO L87 Difference]: Start difference. First operand 2378 states and 3113 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:43,791 INFO L93 Difference]: Finished difference Result 5582 states and 7388 transitions. [2022-12-14 14:25:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:43,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2022-12-14 14:25:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:43,802 INFO L225 Difference]: With dead ends: 5582 [2022-12-14 14:25:43,802 INFO L226 Difference]: Without dead ends: 3210 [2022-12-14 14:25:43,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:43,807 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 58 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:43,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 224 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2022-12-14 14:25:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 2606. [2022-12-14 14:25:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2067 states have (on average 1.3560716013546201) internal successors, (2803), 2082 states have internal predecessors, (2803), 324 states have call successors, (324), 215 states have call predecessors, (324), 214 states have return successors, (322), 309 states have call predecessors, (322), 322 states have call successors, (322) [2022-12-14 14:25:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3449 transitions. [2022-12-14 14:25:43,926 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3449 transitions. Word has length 110 [2022-12-14 14:25:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:43,927 INFO L495 AbstractCegarLoop]: Abstraction has 2606 states and 3449 transitions. [2022-12-14 14:25:43,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3449 transitions. [2022-12-14 14:25:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 14:25:43,931 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:43,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:43,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 14:25:44,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:44,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:44,133 INFO L85 PathProgramCache]: Analyzing trace with hash -19488020, now seen corresponding path program 1 times [2022-12-14 14:25:44,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:44,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898485749] [2022-12-14 14:25:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:44,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 14:25:44,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:44,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898485749] [2022-12-14 14:25:44,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898485749] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:44,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488088400] [2022-12-14 14:25:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:44,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:44,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:44,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:44,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:25:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:44,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:25:44,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:25:44,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:44,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488088400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:44,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:44,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 14:25:44,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053889999] [2022-12-14 14:25:44,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:44,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:44,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:44,437 INFO L87 Difference]: Start difference. First operand 2606 states and 3449 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:44,637 INFO L93 Difference]: Finished difference Result 4902 states and 6557 transitions. [2022-12-14 14:25:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-12-14 14:25:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:44,646 INFO L225 Difference]: With dead ends: 4902 [2022-12-14 14:25:44,646 INFO L226 Difference]: Without dead ends: 3168 [2022-12-14 14:25:44,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:44,651 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 61 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:44,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 272 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2022-12-14 14:25:44,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 2886. [2022-12-14 14:25:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2315 states have (on average 1.3801295896328294) internal successors, (3195), 2330 states have internal predecessors, (3195), 340 states have call successors, (340), 231 states have call predecessors, (340), 230 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2022-12-14 14:25:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3873 transitions. [2022-12-14 14:25:44,776 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3873 transitions. Word has length 110 [2022-12-14 14:25:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:44,777 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 3873 transitions. [2022-12-14 14:25:44,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3873 transitions. [2022-12-14 14:25:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 14:25:44,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:44,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:44,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 14:25:44,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 14:25:44,982 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:44,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:44,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1267372046, now seen corresponding path program 1 times [2022-12-14 14:25:44,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:44,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67285134] [2022-12-14 14:25:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:44,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 14:25:45,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:45,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67285134] [2022-12-14 14:25:45,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67285134] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:45,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142528887] [2022-12-14 14:25:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:45,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:45,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:45,051 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:45,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 14:25:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:45,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:25:45,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:25:45,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:45,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142528887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:45,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:45,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 14:25:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637155973] [2022-12-14 14:25:45,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:45,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:45,157 INFO L87 Difference]: Start difference. First operand 2886 states and 3873 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:45,344 INFO L93 Difference]: Finished difference Result 5364 states and 7289 transitions. [2022-12-14 14:25:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:45,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-12-14 14:25:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:45,355 INFO L225 Difference]: With dead ends: 5364 [2022-12-14 14:25:45,355 INFO L226 Difference]: Without dead ends: 3880 [2022-12-14 14:25:45,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:45,358 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 66 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:45,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 289 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2022-12-14 14:25:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3366. [2022-12-14 14:25:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 2731 states have (on average 1.3954595386305382) internal successors, (3811), 2746 states have internal predecessors, (3811), 372 states have call successors, (372), 263 states have call predecessors, (372), 262 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2022-12-14 14:25:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4553 transitions. [2022-12-14 14:25:45,504 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4553 transitions. Word has length 111 [2022-12-14 14:25:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:45,504 INFO L495 AbstractCegarLoop]: Abstraction has 3366 states and 4553 transitions. [2022-12-14 14:25:45,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4553 transitions. [2022-12-14 14:25:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 14:25:45,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:45,510 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:45,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 14:25:45,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:45,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:45,711 INFO L85 PathProgramCache]: Analyzing trace with hash 155162273, now seen corresponding path program 1 times [2022-12-14 14:25:45,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:45,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182148979] [2022-12-14 14:25:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 14:25:45,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:45,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182148979] [2022-12-14 14:25:45,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182148979] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:45,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137687419] [2022-12-14 14:25:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:45,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:45,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:45,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 14:25:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:46,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 14:25:46,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:25:46,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:46,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137687419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:46,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:46,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 14:25:46,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460626502] [2022-12-14 14:25:46,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:46,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:46,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:46,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:46,034 INFO L87 Difference]: Start difference. First operand 3366 states and 4553 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:46,282 INFO L93 Difference]: Finished difference Result 6360 states and 8677 transitions. [2022-12-14 14:25:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:46,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-12-14 14:25:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:46,309 INFO L225 Difference]: With dead ends: 6360 [2022-12-14 14:25:46,309 INFO L226 Difference]: Without dead ends: 4628 [2022-12-14 14:25:46,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:46,314 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 72 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:46,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 294 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:46,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2022-12-14 14:25:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4030. [2022-12-14 14:25:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 3299 states have (on average 1.401333737496211) internal successors, (4623), 3314 states have internal predecessors, (4623), 420 states have call successors, (420), 311 states have call predecessors, (420), 310 states have return successors, (418), 405 states have call predecessors, (418), 418 states have call successors, (418) [2022-12-14 14:25:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5461 transitions. [2022-12-14 14:25:46,492 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5461 transitions. Word has length 111 [2022-12-14 14:25:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:46,492 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 5461 transitions. [2022-12-14 14:25:46,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5461 transitions. [2022-12-14 14:25:46,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 14:25:46,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:46,498 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:46,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 14:25:46,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 14:25:46,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:46,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash -456261403, now seen corresponding path program 1 times [2022-12-14 14:25:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:46,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52244601] [2022-12-14 14:25:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:46,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 14:25:46,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:46,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52244601] [2022-12-14 14:25:46,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52244601] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:46,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025555397] [2022-12-14 14:25:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:46,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:46,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:46,908 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:46,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 14:25:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:46,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 14:25:46,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 14:25:47,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:47,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025555397] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:47,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:47,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-12-14 14:25:47,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435936952] [2022-12-14 14:25:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:47,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:25:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:25:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:47,072 INFO L87 Difference]: Start difference. First operand 4030 states and 5461 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 14:25:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:47,581 INFO L93 Difference]: Finished difference Result 9558 states and 12905 transitions. [2022-12-14 14:25:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:25:47,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 111 [2022-12-14 14:25:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:47,603 INFO L225 Difference]: With dead ends: 9558 [2022-12-14 14:25:47,603 INFO L226 Difference]: Without dead ends: 5534 [2022-12-14 14:25:47,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:25:47,609 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 276 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:47,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 316 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:25:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2022-12-14 14:25:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5530. [2022-12-14 14:25:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 4497 states have (on average 1.3718034245052257) internal successors, (6169), 4518 states have internal predecessors, (6169), 594 states have call successors, (594), 439 states have call predecessors, (594), 438 states have return successors, (592), 573 states have call predecessors, (592), 592 states have call successors, (592) [2022-12-14 14:25:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 7355 transitions. [2022-12-14 14:25:47,909 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 7355 transitions. Word has length 111 [2022-12-14 14:25:47,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:47,909 INFO L495 AbstractCegarLoop]: Abstraction has 5530 states and 7355 transitions. [2022-12-14 14:25:47,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 14:25:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 7355 transitions. [2022-12-14 14:25:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 14:25:47,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:47,917 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:47,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 14:25:48,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 14:25:48,119 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2042192477, now seen corresponding path program 1 times [2022-12-14 14:25:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:48,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448727955] [2022-12-14 14:25:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:48,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 14:25:48,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:48,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448727955] [2022-12-14 14:25:48,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448727955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:48,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161133173] [2022-12-14 14:25:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:48,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:48,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:48,335 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:48,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 14:25:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:48,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 14:25:48,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 14:25:48,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:48,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161133173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:48,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:48,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-12-14 14:25:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311175170] [2022-12-14 14:25:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:48,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:25:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:25:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:25:48,471 INFO L87 Difference]: Start difference. First operand 5530 states and 7355 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 14:25:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:48,988 INFO L93 Difference]: Finished difference Result 13154 states and 17441 transitions. [2022-12-14 14:25:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:25:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 112 [2022-12-14 14:25:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:49,002 INFO L225 Difference]: With dead ends: 13154 [2022-12-14 14:25:49,003 INFO L226 Difference]: Without dead ends: 7630 [2022-12-14 14:25:49,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:25:49,008 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 348 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:49,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 241 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:25:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states. [2022-12-14 14:25:49,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7626. [2022-12-14 14:25:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7626 states, 6163 states have (on average 1.3439883173779004) internal successors, (8283), 6193 states have internal predecessors, (8283), 842 states have call successors, (842), 621 states have call predecessors, (842), 620 states have return successors, (840), 812 states have call predecessors, (840), 840 states have call successors, (840) [2022-12-14 14:25:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7626 states to 7626 states and 9965 transitions. [2022-12-14 14:25:49,439 INFO L78 Accepts]: Start accepts. Automaton has 7626 states and 9965 transitions. Word has length 112 [2022-12-14 14:25:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:49,439 INFO L495 AbstractCegarLoop]: Abstraction has 7626 states and 9965 transitions. [2022-12-14 14:25:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-14 14:25:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7626 states and 9965 transitions. [2022-12-14 14:25:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 14:25:49,450 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:49,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:49,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 14:25:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:49,651 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash 685564912, now seen corresponding path program 1 times [2022-12-14 14:25:49,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:49,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723881798] [2022-12-14 14:25:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 14:25:49,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723881798] [2022-12-14 14:25:49,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723881798] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141502011] [2022-12-14 14:25:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:49,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:49,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:49,719 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:49,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 14:25:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:49,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:25:49,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 14:25:49,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:49,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141502011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:49,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:49,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-14 14:25:49,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200660587] [2022-12-14 14:25:49,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:49,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:25:49,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:25:49,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:25:49,844 INFO L87 Difference]: Start difference. First operand 7626 states and 9965 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 14:25:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:50,277 INFO L93 Difference]: Finished difference Result 10844 states and 14207 transitions. [2022-12-14 14:25:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:25:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 116 [2022-12-14 14:25:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:50,291 INFO L225 Difference]: With dead ends: 10844 [2022-12-14 14:25:50,291 INFO L226 Difference]: Without dead ends: 8099 [2022-12-14 14:25:50,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:50,295 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 114 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:50,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 452 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:25:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2022-12-14 14:25:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 7868. [2022-12-14 14:25:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7868 states, 6358 states have (on average 1.3413022963195973) internal successors, (8528), 6406 states have internal predecessors, (8528), 849 states have call successors, (849), 625 states have call predecessors, (849), 660 states have return successors, (883), 837 states have call predecessors, (883), 847 states have call successors, (883) [2022-12-14 14:25:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7868 states to 7868 states and 10260 transitions. [2022-12-14 14:25:50,706 INFO L78 Accepts]: Start accepts. Automaton has 7868 states and 10260 transitions. Word has length 116 [2022-12-14 14:25:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:50,707 INFO L495 AbstractCegarLoop]: Abstraction has 7868 states and 10260 transitions. [2022-12-14 14:25:50,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 14:25:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 7868 states and 10260 transitions. [2022-12-14 14:25:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 14:25:50,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:50,714 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:50,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 14:25:50,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 14:25:50,915 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1986791359, now seen corresponding path program 1 times [2022-12-14 14:25:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:50,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143953106] [2022-12-14 14:25:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 14:25:50,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:50,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143953106] [2022-12-14 14:25:50,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143953106] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:50,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584232519] [2022-12-14 14:25:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:50,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:50,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:50,947 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:50,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 14:25:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:51,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:25:51,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 14:25:51,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:51,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584232519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:51,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:51,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-12-14 14:25:51,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948674297] [2022-12-14 14:25:51,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:51,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:51,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:51,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:51,039 INFO L87 Difference]: Start difference. First operand 7868 states and 10260 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:51,560 INFO L93 Difference]: Finished difference Result 10679 states and 14043 transitions. [2022-12-14 14:25:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2022-12-14 14:25:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:51,575 INFO L225 Difference]: With dead ends: 10679 [2022-12-14 14:25:51,576 INFO L226 Difference]: Without dead ends: 7610 [2022-12-14 14:25:51,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:51,582 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 22 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:51,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 227 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2022-12-14 14:25:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 7163. [2022-12-14 14:25:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7163 states, 5761 states have (on average 1.341260197882312) internal successors, (7727), 5782 states have internal predecessors, (7727), 813 states have call successors, (813), 589 states have call predecessors, (813), 588 states have return successors, (811), 792 states have call predecessors, (811), 811 states have call successors, (811) [2022-12-14 14:25:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 9351 transitions. [2022-12-14 14:25:51,946 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 9351 transitions. Word has length 117 [2022-12-14 14:25:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:51,947 INFO L495 AbstractCegarLoop]: Abstraction has 7163 states and 9351 transitions. [2022-12-14 14:25:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 9351 transitions. [2022-12-14 14:25:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 14:25:51,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:51,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:51,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 14:25:52,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 14:25:52,156 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:52,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1061304351, now seen corresponding path program 1 times [2022-12-14 14:25:52,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:52,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983066045] [2022-12-14 14:25:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:52,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 14:25:52,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:52,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983066045] [2022-12-14 14:25:52,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983066045] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:52,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679155898] [2022-12-14 14:25:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:52,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:52,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:52,244 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:52,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 14:25:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:52,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 14:25:52,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 14:25:52,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:52,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679155898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:52,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:52,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-12-14 14:25:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424683487] [2022-12-14 14:25:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:52,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:52,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:52,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:52,385 INFO L87 Difference]: Start difference. First operand 7163 states and 9351 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:52,811 INFO L93 Difference]: Finished difference Result 13212 states and 17362 transitions. [2022-12-14 14:25:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2022-12-14 14:25:52,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:52,824 INFO L225 Difference]: With dead ends: 13212 [2022-12-14 14:25:52,825 INFO L226 Difference]: Without dead ends: 8190 [2022-12-14 14:25:52,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:25:52,830 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 85 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:52,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 160 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:52,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8190 states. [2022-12-14 14:25:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8190 to 8098. [2022-12-14 14:25:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8098 states, 6621 states have (on average 1.3177767708805317) internal successors, (8725), 6642 states have internal predecessors, (8725), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2022-12-14 14:25:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 10425 transitions. [2022-12-14 14:25:53,326 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 10425 transitions. Word has length 117 [2022-12-14 14:25:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:53,327 INFO L495 AbstractCegarLoop]: Abstraction has 8098 states and 10425 transitions. [2022-12-14 14:25:53,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 10425 transitions. [2022-12-14 14:25:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 14:25:53,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:53,337 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:53,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 14:25:53,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 14:25:53,537 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:53,538 INFO L85 PathProgramCache]: Analyzing trace with hash -613752833, now seen corresponding path program 1 times [2022-12-14 14:25:53,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:53,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352915443] [2022-12-14 14:25:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:53,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 14:25:53,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352915443] [2022-12-14 14:25:53,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352915443] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403694361] [2022-12-14 14:25:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:53,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:53,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:53,581 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:53,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 14:25:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:53,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:25:53,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 14:25:53,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:25:53,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403694361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:53,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:25:53,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-12-14 14:25:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662332944] [2022-12-14 14:25:53,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:53,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:53,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:53,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:53,703 INFO L87 Difference]: Start difference. First operand 8098 states and 10425 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:54,186 INFO L93 Difference]: Finished difference Result 13736 states and 17965 transitions. [2022-12-14 14:25:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:54,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 117 [2022-12-14 14:25:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:54,199 INFO L225 Difference]: With dead ends: 13736 [2022-12-14 14:25:54,199 INFO L226 Difference]: Without dead ends: 8084 [2022-12-14 14:25:54,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:54,206 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 95 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:54,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 288 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2022-12-14 14:25:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 7970. [2022-12-14 14:25:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7970 states, 6493 states have (on average 1.289542584321577) internal successors, (8373), 6514 states have internal predecessors, (8373), 823 states have call successors, (823), 654 states have call predecessors, (823), 653 states have return successors, (877), 802 states have call predecessors, (877), 821 states have call successors, (877) [2022-12-14 14:25:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 10073 transitions. [2022-12-14 14:25:54,631 INFO L78 Accepts]: Start accepts. Automaton has 7970 states and 10073 transitions. Word has length 117 [2022-12-14 14:25:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:54,631 INFO L495 AbstractCegarLoop]: Abstraction has 7970 states and 10073 transitions. [2022-12-14 14:25:54,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:25:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 7970 states and 10073 transitions. [2022-12-14 14:25:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 14:25:54,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:54,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:54,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-14 14:25:54,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:54,839 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash -646312865, now seen corresponding path program 1 times [2022-12-14 14:25:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:54,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823315237] [2022-12-14 14:25:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:54,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 14:25:55,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:55,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823315237] [2022-12-14 14:25:55,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823315237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:55,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:55,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 14:25:55,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646708408] [2022-12-14 14:25:55,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:55,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 14:25:55,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:55,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 14:25:55,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:25:55,136 INFO L87 Difference]: Start difference. First operand 7970 states and 10073 transitions. Second operand has 11 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-12-14 14:25:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:56,753 INFO L93 Difference]: Finished difference Result 17707 states and 22861 transitions. [2022-12-14 14:25:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 14:25:56,754 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 114 [2022-12-14 14:25:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:56,780 INFO L225 Difference]: With dead ends: 17707 [2022-12-14 14:25:56,780 INFO L226 Difference]: Without dead ends: 13663 [2022-12-14 14:25:56,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-12-14 14:25:56,788 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 714 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:56,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 374 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:25:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13663 states. [2022-12-14 14:25:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13663 to 11149. [2022-12-14 14:25:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11149 states, 9183 states have (on average 1.274420124142437) internal successors, (11703), 9204 states have internal predecessors, (11703), 1075 states have call successors, (1075), 891 states have call predecessors, (1075), 890 states have return successors, (1151), 1054 states have call predecessors, (1151), 1073 states have call successors, (1151) [2022-12-14 14:25:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11149 states to 11149 states and 13929 transitions. [2022-12-14 14:25:57,507 INFO L78 Accepts]: Start accepts. Automaton has 11149 states and 13929 transitions. Word has length 114 [2022-12-14 14:25:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:57,507 INFO L495 AbstractCegarLoop]: Abstraction has 11149 states and 13929 transitions. [2022-12-14 14:25:57,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 6 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-12-14 14:25:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 11149 states and 13929 transitions. [2022-12-14 14:25:57,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 14:25:57,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:57,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:57,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 14:25:57,514 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:57,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash 272661758, now seen corresponding path program 1 times [2022-12-14 14:25:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:57,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995638197] [2022-12-14 14:25:57,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:57,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 14:25:57,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:57,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995638197] [2022-12-14 14:25:57,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995638197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:57,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:57,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:25:57,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055744751] [2022-12-14 14:25:57,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:57,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:25:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:25:57,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:57,551 INFO L87 Difference]: Start difference. First operand 11149 states and 13929 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:58,502 INFO L93 Difference]: Finished difference Result 15639 states and 19757 transitions. [2022-12-14 14:25:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:25:58,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 114 [2022-12-14 14:25:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:58,518 INFO L225 Difference]: With dead ends: 15639 [2022-12-14 14:25:58,518 INFO L226 Difference]: Without dead ends: 11035 [2022-12-14 14:25:58,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:25:58,526 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 209 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:58,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 310 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:25:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11035 states. [2022-12-14 14:25:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11035 to 11017. [2022-12-14 14:25:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 9051 states have (on average 1.2641697050049718) internal successors, (11442), 9072 states have internal predecessors, (11442), 1075 states have call successors, (1075), 891 states have call predecessors, (1075), 890 states have return successors, (1151), 1054 states have call predecessors, (1151), 1073 states have call successors, (1151) [2022-12-14 14:25:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 13668 transitions. [2022-12-14 14:25:59,331 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 13668 transitions. Word has length 114 [2022-12-14 14:25:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:59,331 INFO L495 AbstractCegarLoop]: Abstraction has 11017 states and 13668 transitions. [2022-12-14 14:25:59,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:25:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 13668 transitions. [2022-12-14 14:25:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 14:25:59,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:59,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:59,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 14:25:59,341 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 162027287, now seen corresponding path program 1 times [2022-12-14 14:25:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:59,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163013471] [2022-12-14 14:25:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-14 14:25:59,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:59,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163013471] [2022-12-14 14:25:59,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163013471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:59,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:59,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 14:25:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737426411] [2022-12-14 14:25:59,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:59,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:25:59,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:25:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:25:59,486 INFO L87 Difference]: Start difference. First operand 11017 states and 13668 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:26:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:26:00,760 INFO L93 Difference]: Finished difference Result 18699 states and 23158 transitions. [2022-12-14 14:26:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 14:26:00,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2022-12-14 14:26:00,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:26:00,782 INFO L225 Difference]: With dead ends: 18699 [2022-12-14 14:26:00,782 INFO L226 Difference]: Without dead ends: 14227 [2022-12-14 14:26:00,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:26:00,790 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 103 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:26:00,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 349 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:26:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14227 states. [2022-12-14 14:26:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14227 to 13747. [2022-12-14 14:26:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 11203 states have (on average 1.2510934571097028) internal successors, (14016), 11260 states have internal predecessors, (14016), 1391 states have call successors, (1391), 1144 states have call predecessors, (1391), 1152 states have return successors, (1547), 1343 states have call predecessors, (1547), 1389 states have call successors, (1547) [2022-12-14 14:26:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 16954 transitions. [2022-12-14 14:26:01,767 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 16954 transitions. Word has length 115 [2022-12-14 14:26:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:26:01,767 INFO L495 AbstractCegarLoop]: Abstraction has 13747 states and 16954 transitions. [2022-12-14 14:26:01,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 14:26:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 16954 transitions. [2022-12-14 14:26:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-14 14:26:01,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:26:01,774 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:26:01,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 14:26:01,774 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:26:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:26:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1797529204, now seen corresponding path program 1 times [2022-12-14 14:26:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:26:01,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278863942] [2022-12-14 14:26:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:26:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:26:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:26:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 40 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 14:26:02,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:26:02,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278863942] [2022-12-14 14:26:02,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278863942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:26:02,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370109505] [2022-12-14 14:26:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:26:02,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:26:02,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:26:02,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:26:02,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 14:26:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:26:02,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 14:26:02,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:26:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 14:26:02,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:26:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 14:26:02,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370109505] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:26:02,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [910147500] [2022-12-14 14:26:02,531 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 14:26:02,531 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:26:02,533 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:26:02,538 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:26:02,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:26:06,924 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 41 for LOIs [2022-12-14 14:26:06,926 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 124 for LOIs [2022-12-14 14:26:18,162 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 176 for LOIs [2022-12-14 14:26:32,464 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 85 for LOIs [2022-12-14 14:26:32,471 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 60 for LOIs [2022-12-14 14:26:32,481 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 51 for LOIs [2022-12-14 14:26:32,733 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 68 for LOIs [2022-12-14 14:26:33,160 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:26:57,634 WARN L233 SmtUtils]: Spent 23.33s on a formula simplification. DAG size of input: 916 DAG size of output: 820 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:27:12,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '371850#(and (<= ~local~0 2147483647) (= ~t1_pc~0 0) (= ~t1_i~0 1) (<= 0 (+ ~local~0 2147483648)) (= 0 ~t3_pc~0) (= ~m_pc~0 1) (= ~m_i~0 1) (not (= ~token~0 (+ 3 ~local~0))) (= ~t2_i~0 1) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 14:27:12,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:27:12,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:27:12,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 20 [2022-12-14 14:27:12,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514939284] [2022-12-14 14:27:12,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:27:12,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 14:27:12,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 14:27:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=4331, Unknown=0, NotChecked=0, Total=4830 [2022-12-14 14:27:12,399 INFO L87 Difference]: Start difference. First operand 13747 states and 16954 transitions. Second operand has 20 states, 16 states have (on average 9.1875) internal successors, (147), 18 states have internal predecessors, (147), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-14 14:27:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:14,653 INFO L93 Difference]: Finished difference Result 26754 states and 33681 transitions. [2022-12-14 14:27:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 14:27:14,654 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 9.1875) internal successors, (147), 18 states have internal predecessors, (147), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 120 [2022-12-14 14:27:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:14,672 INFO L225 Difference]: With dead ends: 26754 [2022-12-14 14:27:14,672 INFO L226 Difference]: Without dead ends: 12973 [2022-12-14 14:27:14,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 323 SyntacticMatches, 7 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5134 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=1012, Invalid=11198, Unknown=0, NotChecked=0, Total=12210 [2022-12-14 14:27:14,688 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1126 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:14,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1809 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 14:27:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12973 states. [2022-12-14 14:27:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12973 to 9481. [2022-12-14 14:27:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9481 states, 7801 states have (on average 1.2618895013459812) internal successors, (9844), 7825 states have internal predecessors, (9844), 890 states have call successors, (890), 787 states have call predecessors, (890), 789 states have return successors, (946), 868 states have call predecessors, (946), 888 states have call successors, (946) [2022-12-14 14:27:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9481 states to 9481 states and 11680 transitions. [2022-12-14 14:27:15,416 INFO L78 Accepts]: Start accepts. Automaton has 9481 states and 11680 transitions. Word has length 120 [2022-12-14 14:27:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:15,417 INFO L495 AbstractCegarLoop]: Abstraction has 9481 states and 11680 transitions. [2022-12-14 14:27:15,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 9.1875) internal successors, (147), 18 states have internal predecessors, (147), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-14 14:27:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 9481 states and 11680 transitions. [2022-12-14 14:27:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 14:27:15,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:15,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:15,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 14:27:15,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 14:27:15,622 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:15,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash -124447622, now seen corresponding path program 1 times [2022-12-14 14:27:15,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:15,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159474684] [2022-12-14 14:27:15,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 14:27:15,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:15,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159474684] [2022-12-14 14:27:15,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159474684] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:15,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316414245] [2022-12-14 14:27:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:15,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:15,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:15,747 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:15,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 14:27:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:15,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 14:27:15,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:27:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:27:15,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:27:15,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316414245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:27:15,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:27:15,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-12-14 14:27:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031621364] [2022-12-14 14:27:15,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:27:15,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:27:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:15,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:27:15,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:27:15,884 INFO L87 Difference]: Start difference. First operand 9481 states and 11680 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 14:27:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:16,981 INFO L93 Difference]: Finished difference Result 17927 states and 22136 transitions. [2022-12-14 14:27:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:27:16,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 116 [2022-12-14 14:27:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:16,998 INFO L225 Difference]: With dead ends: 17927 [2022-12-14 14:27:16,998 INFO L226 Difference]: Without dead ends: 11999 [2022-12-14 14:27:17,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:27:17,004 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 219 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:17,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 457 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:27:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11999 states. [2022-12-14 14:27:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11999 to 10779. [2022-12-14 14:27:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10779 states, 8806 states have (on average 1.248694072223484) internal successors, (10996), 8843 states have internal predecessors, (10996), 1051 states have call successors, (1051), 911 states have call predecessors, (1051), 921 states have return successors, (1176), 1024 states have call predecessors, (1176), 1049 states have call successors, (1176) [2022-12-14 14:27:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 13223 transitions. [2022-12-14 14:27:17,840 INFO L78 Accepts]: Start accepts. Automaton has 10779 states and 13223 transitions. Word has length 116 [2022-12-14 14:27:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:17,840 INFO L495 AbstractCegarLoop]: Abstraction has 10779 states and 13223 transitions. [2022-12-14 14:27:17,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 14:27:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10779 states and 13223 transitions. [2022-12-14 14:27:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-14 14:27:17,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:17,844 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:17,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 14:27:18,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:18,046 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:18,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1881186281, now seen corresponding path program 1 times [2022-12-14 14:27:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:18,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216887650] [2022-12-14 14:27:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:18,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 40 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 14:27:18,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216887650] [2022-12-14 14:27:18,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216887650] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221016064] [2022-12-14 14:27:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:18,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:18,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:18,337 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:18,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 14:27:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:18,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 14:27:18,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:27:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 14:27:18,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:27:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 14:27:18,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221016064] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:27:18,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [753342128] [2022-12-14 14:27:18,700 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 14:27:18,700 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:27:18,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:27:18,701 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:27:18,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:27:21,445 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 42 for LOIs [2022-12-14 14:27:21,447 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 60 for LOIs [2022-12-14 14:27:21,461 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 85 for LOIs [2022-12-14 14:27:21,476 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 85 for LOIs [2022-12-14 14:27:21,483 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 37 for LOIs [2022-12-14 14:27:21,488 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 53 for LOIs [2022-12-14 14:27:21,532 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 58 for LOIs [2022-12-14 14:27:21,633 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:27:28,247 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '461724#(and (<= ~t1_pc~0 1) (<= ~local~0 2147483647) (= ~t1_i~0 1) (<= 0 (+ ~local~0 2147483648)) (= 0 ~t3_pc~0) (= ~m_pc~0 1) (= ~m_i~0 1) (not (= ~token~0 (+ 3 ~local~0))) (= ~t2_i~0 1) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-12-14 14:27:28,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:27:28,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:27:28,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 6] total 21 [2022-12-14 14:27:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048058865] [2022-12-14 14:27:28,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:27:28,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 14:27:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 14:27:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=4668, Unknown=0, NotChecked=0, Total=5112 [2022-12-14 14:27:28,250 INFO L87 Difference]: Start difference. First operand 10779 states and 13223 transitions. Second operand has 21 states, 17 states have (on average 9.176470588235293) internal successors, (156), 19 states have internal predecessors, (156), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-14 14:27:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:31,323 INFO L93 Difference]: Finished difference Result 21887 states and 27373 transitions. [2022-12-14 14:27:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 14:27:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 9.176470588235293) internal successors, (156), 19 states have internal predecessors, (156), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 123 [2022-12-14 14:27:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:31,339 INFO L225 Difference]: With dead ends: 21887 [2022-12-14 14:27:31,340 INFO L226 Difference]: Without dead ends: 12015 [2022-12-14 14:27:31,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 353 SyntacticMatches, 14 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10913 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1670, Invalid=23136, Unknown=0, NotChecked=0, Total=24806 [2022-12-14 14:27:31,352 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 1366 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:31,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 2386 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 14:27:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12015 states. [2022-12-14 14:27:32,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12015 to 7635. [2022-12-14 14:27:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7635 states, 6312 states have (on average 1.253960709759189) internal successors, (7915), 6329 states have internal predecessors, (7915), 683 states have call successors, (683), 633 states have call predecessors, (683), 639 states have return successors, (762), 672 states have call predecessors, (762), 681 states have call successors, (762) [2022-12-14 14:27:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7635 states to 7635 states and 9360 transitions. [2022-12-14 14:27:32,033 INFO L78 Accepts]: Start accepts. Automaton has 7635 states and 9360 transitions. Word has length 123 [2022-12-14 14:27:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:32,033 INFO L495 AbstractCegarLoop]: Abstraction has 7635 states and 9360 transitions. [2022-12-14 14:27:32,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 9.176470588235293) internal successors, (156), 19 states have internal predecessors, (156), 9 states have call successors, (34), 5 states have call predecessors, (34), 8 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-12-14 14:27:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 7635 states and 9360 transitions. [2022-12-14 14:27:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-14 14:27:32,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:32,036 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:32,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 14:27:32,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:32,238 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1683320751, now seen corresponding path program 1 times [2022-12-14 14:27:32,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:32,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482454878] [2022-12-14 14:27:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:32,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-14 14:27:32,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:32,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482454878] [2022-12-14 14:27:32,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482454878] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:32,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327464174] [2022-12-14 14:27:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:32,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:32,404 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:32,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 14:27:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:32,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 14:27:32,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:27:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 14:27:32,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:27:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-14 14:27:32,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327464174] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:27:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333221683] [2022-12-14 14:27:32,783 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-12-14 14:27:32,783 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:27:32,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:27:32,783 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:27:32,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:27:35,076 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 43 for LOIs [2022-12-14 14:27:35,078 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 138 for LOIs [2022-12-14 14:27:39,033 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 178 for LOIs [2022-12-14 14:27:39,362 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 146 for LOIs [2022-12-14 14:27:39,386 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 38 for LOIs [2022-12-14 14:27:39,392 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 50 for LOIs [2022-12-14 14:27:39,442 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 38 for LOIs [2022-12-14 14:27:39,591 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:27:50,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '503014#(and (<= ~t1_pc~0 1) (<= ~local~0 2147483647) (= ~t1_i~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= 0 ~t3_pc~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (not (= ~token~0 (+ 3 ~local~0))) (= ~t2_i~0 1) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-12-14 14:27:50,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:27:50,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:27:50,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 17 [2022-12-14 14:27:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485633657] [2022-12-14 14:27:50,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:27:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 14:27:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 14:27:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=4700, Unknown=0, NotChecked=0, Total=5112 [2022-12-14 14:27:50,627 INFO L87 Difference]: Start difference. First operand 7635 states and 9360 transitions. Second operand has 17 states, 14 states have (on average 9.357142857142858) internal successors, (131), 15 states have internal predecessors, (131), 6 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2022-12-14 14:27:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:53,820 INFO L93 Difference]: Finished difference Result 14756 states and 18170 transitions. [2022-12-14 14:27:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-12-14 14:27:53,821 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.357142857142858) internal successors, (131), 15 states have internal predecessors, (131), 6 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) Word has length 125 [2022-12-14 14:27:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:53,831 INFO L225 Difference]: With dead ends: 14756 [2022-12-14 14:27:53,831 INFO L226 Difference]: Without dead ends: 8278 [2022-12-14 14:27:53,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 343 SyntacticMatches, 14 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10838 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1740, Invalid=23066, Unknown=0, NotChecked=0, Total=24806 [2022-12-14 14:27:53,840 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 902 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:53,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 2677 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 14:27:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2022-12-14 14:27:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 5994. [2022-12-14 14:27:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5994 states, 4962 states have (on average 1.2404272470777913) internal successors, (6155), 4977 states have internal predecessors, (6155), 525 states have call successors, (525), 498 states have call predecessors, (525), 506 states have return successors, (595), 518 states have call predecessors, (595), 523 states have call successors, (595) [2022-12-14 14:27:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 7275 transitions. [2022-12-14 14:27:54,395 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 7275 transitions. Word has length 125 [2022-12-14 14:27:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:54,396 INFO L495 AbstractCegarLoop]: Abstraction has 5994 states and 7275 transitions. [2022-12-14 14:27:54,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.357142857142858) internal successors, (131), 15 states have internal predecessors, (131), 6 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2022-12-14 14:27:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 7275 transitions. [2022-12-14 14:27:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-14 14:27:54,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:54,398 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:54,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 14:27:54,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:54,600 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1752661600, now seen corresponding path program 1 times [2022-12-14 14:27:54,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:54,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343075377] [2022-12-14 14:27:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:54,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 14:27:54,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:54,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343075377] [2022-12-14 14:27:54,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343075377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:54,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596322710] [2022-12-14 14:27:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:54,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:54,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:54,972 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:54,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 14:27:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:55,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 14:27:55,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:27:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 14:27:55,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:27:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 14:27:55,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596322710] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:27:55,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [693686966] [2022-12-14 14:27:55,881 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-12-14 14:27:55,881 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:27:55,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:27:55,882 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:27:55,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:28:01,593 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 44 for LOIs [2022-12-14 14:28:01,595 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 139 for LOIs [2022-12-14 14:28:14,414 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 179 for LOIs [2022-12-14 14:28:18,614 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 147 for LOIs [2022-12-14 14:28:18,638 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 58 for LOIs [2022-12-14 14:28:18,648 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 57 for LOIs [2022-12-14 14:28:18,713 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 39 for LOIs [2022-12-14 14:28:18,907 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:28:25,631 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 340 DAG size of output: 288 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:28:37,694 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 611 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:28:45,609 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '532088#(and (<= ~t1_pc~0 1) (<= ~local~0 2147483647) (= ~t1_i~0 1) (<= 0 (+ ~local~0 2147483648)) (<= 0 ~t2_pc~0) (= ~m_pc~0 1) (<= ~t2_pc~0 1) (= ~m_i~0 1) (not (= ~token~0 (+ 3 ~local~0))) (<= ~t3_pc~0 1) (= ~t2_i~0 1) (= ~m_st~0 1) (= |#NULL.offset| 0) (<= ~token~0 2147483647) (<= 0 ~t3_pc~0) (= ~t3_i~0 1) (<= 0 (+ ~token~0 2147483648)) (<= 0 |#StackHeapBarrier|) (<= 0 ~t1_pc~0) (= |#NULL.base| 0))' at error location [2022-12-14 14:28:45,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:28:45,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:28:45,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2022-12-14 14:28:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283961496] [2022-12-14 14:28:45,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:28:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 14:28:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 14:28:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=8131, Unknown=0, NotChecked=0, Total=8742 [2022-12-14 14:28:45,613 INFO L87 Difference]: Start difference. First operand 5994 states and 7275 transitions. Second operand has 36 states, 24 states have (on average 8.166666666666666) internal successors, (196), 27 states have internal predecessors, (196), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-12-14 14:28:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:50,131 INFO L93 Difference]: Finished difference Result 13642 states and 16776 transitions. [2022-12-14 14:28:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-14 14:28:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 8.166666666666666) internal successors, (196), 27 states have internal predecessors, (196), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 127 [2022-12-14 14:28:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:50,144 INFO L225 Difference]: With dead ends: 13642 [2022-12-14 14:28:50,144 INFO L226 Difference]: Without dead ends: 8539 [2022-12-14 14:28:50,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 315 SyntacticMatches, 10 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9782 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=2397, Invalid=22409, Unknown=0, NotChecked=0, Total=24806 [2022-12-14 14:28:50,153 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 4962 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 1606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4962 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1606 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:50,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4962 Valid, 828 Invalid, 3778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1606 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 14:28:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2022-12-14 14:28:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 5625. [2022-12-14 14:28:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5625 states, 4660 states have (on average 1.2396995708154506) internal successors, (5777), 4672 states have internal predecessors, (5777), 498 states have call successors, (498), 467 states have call predecessors, (498), 466 states have return successors, (496), 485 states have call predecessors, (496), 496 states have call successors, (496) [2022-12-14 14:28:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5625 states to 5625 states and 6771 transitions. [2022-12-14 14:28:50,777 INFO L78 Accepts]: Start accepts. Automaton has 5625 states and 6771 transitions. Word has length 127 [2022-12-14 14:28:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:50,777 INFO L495 AbstractCegarLoop]: Abstraction has 5625 states and 6771 transitions. [2022-12-14 14:28:50,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 8.166666666666666) internal successors, (196), 27 states have internal predecessors, (196), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2022-12-14 14:28:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5625 states and 6771 transitions. [2022-12-14 14:28:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 14:28:50,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:50,779 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, 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] [2022-12-14 14:28:50,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-14 14:28:50,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 14:28:50,980 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1804653125, now seen corresponding path program 1 times [2022-12-14 14:28:50,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:50,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923324496] [2022-12-14 14:28:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:50,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 31 proven. 19 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-14 14:28:51,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:51,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923324496] [2022-12-14 14:28:51,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923324496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:51,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123481711] [2022-12-14 14:28:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:51,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:51,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:51,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:28:51,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 14:28:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:51,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 14:28:51,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 14:28:51,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:28:51,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123481711] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:28:51,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:28:51,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-12-14 14:28:51,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430723117] [2022-12-14 14:28:51,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:28:51,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:28:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:28:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:28:51,190 INFO L87 Difference]: Start difference. First operand 5625 states and 6771 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:28:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:51,843 INFO L93 Difference]: Finished difference Result 11015 states and 13358 transitions. [2022-12-14 14:28:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:28:51,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 141 [2022-12-14 14:28:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:51,850 INFO L225 Difference]: With dead ends: 11015 [2022-12-14 14:28:51,850 INFO L226 Difference]: Without dead ends: 5977 [2022-12-14 14:28:51,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:28:51,854 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 86 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:51,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:28:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5977 states. [2022-12-14 14:28:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5977 to 5765. [2022-12-14 14:28:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5765 states, 4792 states have (on average 1.2226627712854758) internal successors, (5859), 4804 states have internal predecessors, (5859), 498 states have call successors, (498), 475 states have call predecessors, (498), 474 states have return successors, (510), 485 states have call predecessors, (510), 496 states have call successors, (510) [2022-12-14 14:28:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5765 states to 5765 states and 6867 transitions. [2022-12-14 14:28:52,480 INFO L78 Accepts]: Start accepts. Automaton has 5765 states and 6867 transitions. Word has length 141 [2022-12-14 14:28:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:52,480 INFO L495 AbstractCegarLoop]: Abstraction has 5765 states and 6867 transitions. [2022-12-14 14:28:52,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 14:28:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5765 states and 6867 transitions. [2022-12-14 14:28:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 14:28:52,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:52,482 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 14:28:52,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 14:28:52,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 14:28:52,683 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash -627061368, now seen corresponding path program 1 times [2022-12-14 14:28:52,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:52,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102981476] [2022-12-14 14:28:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:52,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-14 14:28:52,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102981476] [2022-12-14 14:28:52,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102981476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837712729] [2022-12-14 14:28:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:52,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:52,747 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:28:52,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 14:28:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:52,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:28:52,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 14:28:52,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:28:52,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837712729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:28:52,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:28:52,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-12-14 14:28:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399536023] [2022-12-14 14:28:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:28:52,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:28:52,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:28:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:28:52,859 INFO L87 Difference]: Start difference. First operand 5765 states and 6867 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 14:28:53,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:53,509 INFO L93 Difference]: Finished difference Result 10609 states and 12838 transitions. [2022-12-14 14:28:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:28:53,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 141 [2022-12-14 14:28:53,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:53,516 INFO L225 Difference]: With dead ends: 10609 [2022-12-14 14:28:53,517 INFO L226 Difference]: Without dead ends: 5428 [2022-12-14 14:28:53,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:28:53,522 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 94 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:53,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 224 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:28:53,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2022-12-14 14:28:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 5330. [2022-12-14 14:28:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 4411 states have (on average 1.175470414871911) internal successors, (5185), 4423 states have internal predecessors, (5185), 471 states have call successors, (471), 448 states have call predecessors, (471), 447 states have return successors, (483), 458 states have call predecessors, (483), 469 states have call successors, (483) [2022-12-14 14:28:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 6139 transitions. [2022-12-14 14:28:54,115 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 6139 transitions. Word has length 141 [2022-12-14 14:28:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:54,115 INFO L495 AbstractCegarLoop]: Abstraction has 5330 states and 6139 transitions. [2022-12-14 14:28:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 14:28:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 6139 transitions. [2022-12-14 14:28:54,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-14 14:28:54,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:54,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:28:54,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 14:28:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 14:28:54,319 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2130889343, now seen corresponding path program 1 times [2022-12-14 14:28:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:54,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682991506] [2022-12-14 14:28:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-14 14:28:54,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:54,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682991506] [2022-12-14 14:28:54,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682991506] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:54,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857329010] [2022-12-14 14:28:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:54,441 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:28:54,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 14:28:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:54,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 14:28:54,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 14:28:54,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:28:54,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857329010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:28:54,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:28:54,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2022-12-14 14:28:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017655248] [2022-12-14 14:28:54,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:28:54,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:28:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:54,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:28:54,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:28:54,585 INFO L87 Difference]: Start difference. First operand 5330 states and 6139 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-14 14:28:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:55,520 INFO L93 Difference]: Finished difference Result 11056 states and 12787 transitions. [2022-12-14 14:28:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:28:55,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 144 [2022-12-14 14:28:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:55,528 INFO L225 Difference]: With dead ends: 11056 [2022-12-14 14:28:55,528 INFO L226 Difference]: Without dead ends: 6550 [2022-12-14 14:28:55,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:28:55,532 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 233 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:55,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 434 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:28:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6550 states. [2022-12-14 14:28:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6550 to 6010. [2022-12-14 14:28:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6010 states, 4915 states have (on average 1.1611393692777212) internal successors, (5707), 4933 states have internal predecessors, (5707), 565 states have call successors, (565), 520 states have call predecessors, (565), 529 states have return successors, (625), 556 states have call predecessors, (625), 563 states have call successors, (625) [2022-12-14 14:28:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6010 states to 6010 states and 6897 transitions. [2022-12-14 14:28:56,232 INFO L78 Accepts]: Start accepts. Automaton has 6010 states and 6897 transitions. Word has length 144 [2022-12-14 14:28:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:56,232 INFO L495 AbstractCegarLoop]: Abstraction has 6010 states and 6897 transitions. [2022-12-14 14:28:56,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-14 14:28:56,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6010 states and 6897 transitions. [2022-12-14 14:28:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-14 14:28:56,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:56,235 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 14:28:56,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 14:28:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 14:28:56,436 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1389029909, now seen corresponding path program 1 times [2022-12-14 14:28:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:56,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195736799] [2022-12-14 14:28:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:56,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-14 14:28:56,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:56,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195736799] [2022-12-14 14:28:56,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195736799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:28:56,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:28:56,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 14:28:56,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111996558] [2022-12-14 14:28:56,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:28:56,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:28:56,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:56,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:28:56,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:28:56,591 INFO L87 Difference]: Start difference. First operand 6010 states and 6897 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 14:28:58,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:58,851 INFO L93 Difference]: Finished difference Result 19095 states and 21986 transitions. [2022-12-14 14:28:58,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:28:58,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 173 [2022-12-14 14:28:58,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:58,875 INFO L225 Difference]: With dead ends: 19095 [2022-12-14 14:28:58,876 INFO L226 Difference]: Without dead ends: 16499 [2022-12-14 14:28:58,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:28:58,881 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 380 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:58,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1161 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:28:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16499 states. [2022-12-14 14:29:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16499 to 10438. [2022-12-14 14:29:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10438 states, 8481 states have (on average 1.1539912746138428) internal successors, (9787), 8510 states have internal predecessors, (9787), 1020 states have call successors, (1020), 920 states have call predecessors, (1020), 936 states have return successors, (1136), 1007 states have call predecessors, (1136), 1018 states have call successors, (1136) [2022-12-14 14:29:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10438 states to 10438 states and 11943 transitions. [2022-12-14 14:29:00,300 INFO L78 Accepts]: Start accepts. Automaton has 10438 states and 11943 transitions. Word has length 173 [2022-12-14 14:29:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:00,300 INFO L495 AbstractCegarLoop]: Abstraction has 10438 states and 11943 transitions. [2022-12-14 14:29:00,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 14:29:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 10438 states and 11943 transitions. [2022-12-14 14:29:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-14 14:29:00,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:00,304 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-14 14:29:00,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 14:29:00,304 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:29:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash -611460099, now seen corresponding path program 1 times [2022-12-14 14:29:00,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:29:00,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772136926] [2022-12-14 14:29:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:29:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:29:00,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:29:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:29:00,375 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:29:00,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:29:00,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 14:29:00,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 14:29:00,379 INFO L445 BasicCegarLoop]: Path program 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] [2022-12-14 14:29:00,382 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:29:00,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:29:00 BoogieIcfgContainer [2022-12-14 14:29:00,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:29:00,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:29:00,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:29:00,471 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:29:00,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:25:37" (3/4) ... [2022-12-14 14:29:00,473 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 14:29:00,546 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:29:00,546 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:29:00,547 INFO L158 Benchmark]: Toolchain (without parser) took 203468.46ms. Allocated memory was 153.1MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 122.0MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 269.4MB. Max. memory is 16.1GB. [2022-12-14 14:29:00,547 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory was 127.8MB in the beginning and 127.8MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:29:00,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.24ms. Allocated memory is still 153.1MB. Free memory was 121.4MB in the beginning and 106.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:29:00,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.39ms. Allocated memory is still 153.1MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:29:00,547 INFO L158 Benchmark]: Boogie Preprocessor took 33.04ms. Allocated memory is still 153.1MB. Free memory was 104.6MB in the beginning and 102.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:29:00,547 INFO L158 Benchmark]: RCFGBuilder took 591.91ms. Allocated memory is still 153.1MB. Free memory was 102.5MB in the beginning and 120.9MB in the end (delta: -18.4MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2022-12-14 14:29:00,547 INFO L158 Benchmark]: TraceAbstraction took 202472.75ms. Allocated memory was 153.1MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 120.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 246.2MB. Max. memory is 16.1GB. [2022-12-14 14:29:00,547 INFO L158 Benchmark]: Witness Printer took 75.07ms. Allocated memory is still 1.7GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 14:29:00,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory was 127.8MB in the beginning and 127.8MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.24ms. Allocated memory is still 153.1MB. Free memory was 121.4MB in the beginning and 106.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.39ms. Allocated memory is still 153.1MB. Free memory was 106.7MB in the beginning and 104.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.04ms. Allocated memory is still 153.1MB. Free memory was 104.6MB in the beginning and 102.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 591.91ms. Allocated memory is still 153.1MB. Free memory was 102.5MB in the beginning and 120.9MB in the end (delta: -18.4MB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. * TraceAbstraction took 202472.75ms. Allocated memory was 153.1MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 120.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 246.2MB. Max. memory is 16.1GB. * Witness Printer took 75.07ms. Allocated memory is still 1.7GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. 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 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int m_pc = 0; [L25] int t1_pc = 0; [L26] int t2_pc = 0; [L27] int t3_pc = 0; [L28] int m_st ; [L29] int t1_st ; [L30] int t2_st ; [L31] int t3_st ; [L32] int m_i ; [L33] int t1_i ; [L34] int t2_i ; [L35] int t3_i ; [L36] int M_E = 2; [L37] int T1_E = 2; [L38] int T2_E = 2; [L39] int T3_E = 2; [L40] int E_M = 2; [L41] int E_1 = 2; [L42] int E_2 = 2; [L43] int E_3 = 2; [L49] int token ; [L51] int local ; [L735] int __retres1 ; [L739] CALL init_model() [L648] m_i = 1 [L649] t1_i = 1 [L650] t2_i = 1 [L651] t3_i = 1 [L739] RET init_model() [L740] CALL start_simulation() [L676] int kernel_st ; [L677] int tmp ; [L678] int tmp___0 ; [L682] kernel_st = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L683] FCALL update_channels() VAL [E_1=2, E_2=2, E_3=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L684] CALL init_threads() [L304] COND TRUE m_i == 1 [L305] m_st = 0 [L309] COND TRUE t1_i == 1 [L310] t1_st = 0 [L314] COND TRUE t2_i == 1 [L315] t2_st = 0 [L319] COND TRUE t3_i == 1 [L320] t3_st = 0 [L684] RET init_threads() [L685] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L441] COND FALSE !(M_E == 0) [L446] COND FALSE !(T1_E == 0) [L451] COND FALSE !(T2_E == 0) [L456] COND FALSE !(T3_E == 0) [L461] COND FALSE !(E_M == 0) [L466] COND FALSE !(E_1 == 0) [L471] COND FALSE !(E_2 == 0) [L476] COND FALSE !(E_3 == 0) [L685] RET fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L686] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L220] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L230] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L239] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L249] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L258] COND FALSE !(t2_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L268] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L277] COND FALSE !(t3_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L287] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L686] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L687] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L489] COND FALSE !(M_E == 1) [L494] COND FALSE !(T1_E == 1) [L499] COND FALSE !(T2_E == 1) [L504] COND FALSE !(T3_E == 1) [L509] COND FALSE !(E_M == 1) [L514] COND FALSE !(E_1 == 1) [L519] COND FALSE !(E_2 == 1) [L524] COND FALSE !(E_3 == 1) [L687] RET reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_M=2, kernel_st=0, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L690] COND TRUE 1 [L693] kernel_st = 1 [L694] CALL eval() [L360] int tmp ; VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L364] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L367] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L329] int __retres1 ; [L332] COND TRUE m_st == 0 [L333] __retres1 = 1 [L355] return (__retres1); [L367] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L367] tmp = exists_runnable_thread() [L369] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, token=0] [L374] COND TRUE m_st == 0 [L375] int tmp_ndt_1; [L376] tmp_ndt_1 = __VERIFIER_nondet_int() [L377] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, tmp=1, tmp_ndt_1=0, token=0] [L388] COND TRUE t1_st == 0 [L389] int tmp_ndt_2; [L390] tmp_ndt_2 = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp_ndt_2) [L393] t1_st = 1 [L394] CALL transmit1() [L112] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, T2_E=2, t2_i=1, t2_pc=0, t2_st=0, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L123] COND TRUE 1 [L125] t1_pc = 1 [L126] t1_st = 2 [L394] RET transmit1() [L402] COND TRUE t2_st == 0 [L403] int tmp_ndt_3; [L404] tmp_ndt_3 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp_ndt_3) [L407] t2_st = 1 [L408] CALL transmit2() [L148] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=0, t2_st=1, T3_E=2, t3_i=1, t3_pc=0, t3_st=0, token=0] [L159] COND TRUE 1 [L161] t2_pc = 1 [L162] t2_st = 2 [L408] RET transmit2() [L416] COND TRUE t3_st == 0 [L417] int tmp_ndt_4; [L418] tmp_ndt_4 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp_ndt_4) [L421] t3_st = 1 [L422] CALL transmit3() [L184] COND TRUE t3_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=0, t3_st=1, token=0] [L195] COND TRUE 1 [L197] t3_pc = 1 [L198] t3_st = 2 [L422] RET transmit3() [L364] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=-1, tmp_ndt_4=1, token=0] [L367] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L329] int __retres1 ; [L332] COND TRUE m_st == 0 [L333] __retres1 = 1 [L355] return (__retres1); [L367] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=-1, tmp_ndt_4=1, token=0] [L367] tmp = exists_runnable_thread() [L369] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=0, tmp_ndt_2=1, tmp_ndt_3=-1, tmp_ndt_4=1, token=0] [L374] COND TRUE m_st == 0 [L375] int tmp_ndt_1; [L376] tmp_ndt_1 = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp_ndt_1) [L379] m_st = 1 [L380] CALL master() [L54] int tmp_var = __VERIFIER_nondet_int(); [L56] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L67] COND TRUE 1 [L70] token = __VERIFIER_nondet_int() [L71] local = token [L72] E_1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L73] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L581] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L220] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L230] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L239] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L240] COND TRUE E_1 == 1 [L241] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND TRUE \read(tmp___0) [L552] t1_st = 0 [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L258] COND TRUE t2_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L259] COND FALSE !(E_2 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L268] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L277] COND TRUE t3_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L278] COND FALSE !(E_3 == 1) VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L287] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L581] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L73] RET immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L74] E_1 = 2 [L75] m_pc = 1 [L76] m_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L380] RET master() [L388] COND TRUE t1_st == 0 [L389] int tmp_ndt_2; [L390] tmp_ndt_2 = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp_ndt_2) [L393] t1_st = 1 [L394] CALL transmit1() [L112] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L115] COND TRUE t1_pc == 1 [L131] token += 1 [L132] E_2 = 1 VAL [E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L133] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L581] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L220] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L221] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L230] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L239] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L240] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L249] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L258] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L259] COND TRUE E_2 == 1 [L260] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND TRUE \read(tmp___1) [L560] t2_st = 0 [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L277] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L278] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L287] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L581] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L133] RET immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L134] E_2 = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, T2_E=2, t2_i=1, t2_pc=1, t2_st=0, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L123] COND TRUE 1 [L125] t1_pc = 1 [L126] t1_st = 2 [L394] RET transmit1() [L402] COND TRUE t2_st == 0 [L403] int tmp_ndt_3; [L404] tmp_ndt_3 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp_ndt_3) [L407] t2_st = 1 [L408] CALL transmit2() [L148] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L151] COND TRUE t2_pc == 1 [L167] token += 1 [L168] E_3 = 1 VAL [E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L169] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L581] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L220] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L221] COND FALSE !(E_M == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L230] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L239] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L240] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L249] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L258] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L259] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L268] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L277] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L278] COND TRUE E_3 == 1 [L279] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=1, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=2] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND TRUE \read(tmp___2) [L568] t3_st = 0 [L581] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L169] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L170] E_3 = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=1, T3_E=2, t3_i=1, t3_pc=1, t3_st=0, token=2] [L159] COND TRUE 1 [L161] t2_pc = 1 [L162] t2_st = 2 [L408] RET transmit2() [L416] COND TRUE t3_st == 0 [L417] int tmp_ndt_4; [L418] tmp_ndt_4 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp_ndt_4) [L421] t3_st = 1 [L422] CALL transmit3() [L184] COND FALSE !(t3_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=2] [L187] COND TRUE t3_pc == 1 [L203] token += 1 [L204] E_M = 1 VAL [E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L205] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L581] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L220] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L221] COND TRUE E_M == 1 [L222] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND TRUE \read(tmp) [L544] m_st = 0 [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L239] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L240] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L249] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L258] COND TRUE t2_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L259] COND FALSE !(E_2 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L268] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L277] COND TRUE t3_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L278] COND FALSE !(E_3 == 1) VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L287] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L581] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L205] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L206] E_M = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L195] COND TRUE 1 [L197] t3_pc = 1 [L198] t3_st = 2 [L422] RET transmit3() [L364] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=1, tmp_ndt_3=-2, tmp_ndt_4=1, token=3] [L367] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L329] int __retres1 ; [L332] COND TRUE m_st == 0 [L333] __retres1 = 1 [L355] return (__retres1); [L367] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, exists_runnable_thread()=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=1, tmp_ndt_3=-2, tmp_ndt_4=1, token=3] [L367] tmp = exists_runnable_thread() [L369] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp=1, tmp_ndt_1=1, tmp_ndt_2=1, tmp_ndt_3=-2, tmp_ndt_4=1, token=3] [L374] COND TRUE m_st == 0 [L375] int tmp_ndt_1; [L376] tmp_ndt_1 = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp_ndt_1) [L379] m_st = 1 [L380] CALL master() [L54] int tmp_var = __VERIFIER_nondet_int(); [L56] COND FALSE !(m_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L59] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L81] COND FALSE !(token != local + 3) [L86] COND TRUE tmp_var <= 5 [L87] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L92] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L93] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L94] COND TRUE tmp_var == 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L95] CALL error() VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L20] reach_error() VAL [E_1=2, E_2=2, E_3=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, T2_E=2, t2_i=1, t2_pc=1, t2_st=2, T3_E=2, t3_i=1, t3_pc=1, t3_st=2, token=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 202.3s, OverallIterations: 31, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 28.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12833 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12734 mSDsluCounter, 15983 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10965 mSDsCounter, 3527 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10974 IncrementalHoareTripleChecker+Invalid, 14501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3527 mSolverCounterUnsat, 5018 mSDtfsCounter, 10974 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4301 GetRequests, 3545 SyntacticMatches, 45 SemanticMatches, 711 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36734 ImplicationChecksByTransitivity, 89.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13747occurred in iteration=21, InterpolantAutomatonStates: 430, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.8s AutomataMinimizationTime, 30 MinimizatonAttempts, 27449 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 6139 NumberOfCodeBlocks, 6139 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 6401 ConstructedInterpolants, 0 QuantifiedInterpolants, 11918 SizeOfPredicates, 38 NumberOfNonLiveVariables, 12680 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 57 InterpolantComputations, 26 PerfectInterpolantSequences, 3755/4287 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-14 14:29:00,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_745ade81-e54b-48d3-8b09-046418ab4604/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE