./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:14:01,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:14:01,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:14:01,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:14:01,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:14:01,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:14:01,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:14:01,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:14:01,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:14:01,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:14:01,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:14:01,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:14:01,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:14:01,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:14:01,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:14:01,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:14:01,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:14:01,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:14:01,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:14:01,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:14:01,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:14:01,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:14:01,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:14:01,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:14:01,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:14:01,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:14:01,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:14:01,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:14:01,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:14:01,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:14:01,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:14:01,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:14:01,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:14:01,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:14:01,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:14:01,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:14:01,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:14:01,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:14:01,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:14:01,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:14:01,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:14:01,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:14:01,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:14:01,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:14:01,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:14:01,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:14:01,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:14:01,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:14:01,337 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:14:01,337 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:14:01,337 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:14:01,337 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:14:01,338 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:14:01,339 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:14:01,339 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:14:01,339 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:14:01,340 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:14:01,340 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:14:01,340 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:14:01,340 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:14:01,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:14:01,343 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:14:01,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:14:01,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:14:01,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:14:01,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:14:01,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:14:01,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:14:01,345 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:14:01,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:14:01,345 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:14:01,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:14:01,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:14:01,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:14:01,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:14:01,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:14:01,347 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:14:01,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:14:01,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:14:01,348 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:14:01,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:14:01,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:14:01,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:14:01,349 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_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfaa727818e9d1eb335a3637dac175808db4c2bbb7c5a7c3c9835dd5611700d7 [2022-11-23 14:14:01,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:14:01,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:14:01,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:14:01,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:14:01,645 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:14:01,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2022-11-23 14:14:04,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:14:05,328 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:14:05,329 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c [2022-11-23 14:14:05,380 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/data/f0dfc4d5c/db3c3bd7f94c4ce4bc5bf37156afd4dd/FLAG46d2a556e [2022-11-23 14:14:05,396 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/data/f0dfc4d5c/db3c3bd7f94c4ce4bc5bf37156afd4dd [2022-11-23 14:14:05,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:14:05,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:14:05,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:14:05,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:14:05,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:14:05,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:05" (1/1) ... [2022-11-23 14:14:05,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fe3626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:05, skipping insertion in model container [2022-11-23 14:14:05,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:05" (1/1) ... [2022-11-23 14:14:05,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:14:05,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:14:07,847 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_2603541f-5b6e-42c2-aa3f-060ad7df284f/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2022-11-23 14:14:07,883 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_2603541f-5b6e-42c2-aa3f-060ad7df284f/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2022-11-23 14:14:08,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:14:08,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:14:09,371 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_2603541f-5b6e-42c2-aa3f-060ad7df284f/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[378560,378573] [2022-11-23 14:14:09,385 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_2603541f-5b6e-42c2-aa3f-060ad7df284f/sv-benchmarks/c/combinations/Problem05_label42+token_ring.01.cil-2.c[383339,383352] [2022-11-23 14:14:09,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:14:09,529 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:14:09,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09 WrapperNode [2022-11-23 14:14:09,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:14:09,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:14:09,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:14:09,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:14:09,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:09,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:09,917 INFO L138 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12566 [2022-11-23 14:14:09,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:14:09,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:14:09,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:14:09,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:14:09,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:09,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,290 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:14:10,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:14:10,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:14:10,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:14:10,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (1/1) ... [2022-11-23 14:14:10,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:14:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:10,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:14:10,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:14:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:14:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-23 14:14:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-23 14:14:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 14:14:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 14:14:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 14:14:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 14:14:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 14:14:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 14:14:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 14:14:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 14:14:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 14:14:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 14:14:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:14:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 14:14:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 14:14:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:14:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:14:10,803 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:14:10,810 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:14:19,484 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:14:21,774 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:14:21,775 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 14:14:21,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:21 BoogieIcfgContainer [2022-11-23 14:14:21,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:14:21,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:14:21,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:14:21,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:14:21,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:05" (1/3) ... [2022-11-23 14:14:21,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3be1c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:21, skipping insertion in model container [2022-11-23 14:14:21,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:09" (2/3) ... [2022-11-23 14:14:21,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3be1c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:21, skipping insertion in model container [2022-11-23 14:14:21,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:21" (3/3) ... [2022-11-23 14:14:21,789 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.01.cil-2.c [2022-11-23 14:14:21,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:14:21,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:14:21,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:14:21,928 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;@58f200b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:14:21,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:14:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-23 14:14:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 14:14:21,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:21,955 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] [2022-11-23 14:14:21,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:21,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:21,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1699445636, now seen corresponding path program 1 times [2022-11-23 14:14:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:21,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040225488] [2022-11-23 14:14:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:21,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:14:22,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:22,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040225488] [2022-11-23 14:14:22,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040225488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:22,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:22,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:14:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105950764] [2022-11-23 14:14:22,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:22,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:14:22,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:22,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:14:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:14:22,424 INFO L87 Difference]: Start difference. First operand has 1716 states, 1689 states have (on average 1.9792776791000593) internal successors, (3343), 1694 states have internal predecessors, (3343), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-11-23 14:14:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:23,360 INFO L93 Difference]: Finished difference Result 3481 states and 6831 transitions. [2022-11-23 14:14:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:14:23,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 35 [2022-11-23 14:14:23,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:23,382 INFO L225 Difference]: With dead ends: 3481 [2022-11-23 14:14:23,382 INFO L226 Difference]: Without dead ends: 1764 [2022-11-23 14:14:23,390 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 [2022-11-23 14:14:23,394 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3424 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:23,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 6320 Invalid, 568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:14:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-11-23 14:14:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1763. [2022-11-23 14:14:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1721 states have (on average 1.9604880883207438) internal successors, (3374), 1725 states have internal predecessors, (3374), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-23 14:14:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 3428 transitions. [2022-11-23 14:14:23,507 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 3428 transitions. Word has length 35 [2022-11-23 14:14:23,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:23,508 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 3428 transitions. [2022-11-23 14:14:23,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-11-23 14:14:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 3428 transitions. [2022-11-23 14:14:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 14:14:23,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:23,511 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:14:23,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:14:23,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:23,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash 987803097, now seen corresponding path program 1 times [2022-11-23 14:14:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:23,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96735432] [2022-11-23 14:14:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:14:24,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:24,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96735432] [2022-11-23 14:14:24,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96735432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:24,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:24,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:14:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186826380] [2022-11-23 14:14:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:24,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:14:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:24,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:14:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:14:24,030 INFO L87 Difference]: Start difference. First operand 1763 states and 3428 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-11-23 14:14:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:24,893 INFO L93 Difference]: Finished difference Result 1995 states and 3731 transitions. [2022-11-23 14:14:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:14:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 60 [2022-11-23 14:14:24,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:24,904 INFO L225 Difference]: With dead ends: 1995 [2022-11-23 14:14:24,904 INFO L226 Difference]: Without dead ends: 1879 [2022-11-23 14:14:24,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:14:24,907 INFO L413 NwaCegarLoop]: 3147 mSDtfsCounter, 3446 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3456 SdHoareTripleChecker+Valid, 9369 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:24,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3456 Valid, 9369 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:14:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-23 14:14:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1863. [2022-11-23 14:14:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1789 states have (on average 1.9334823923979878) internal successors, (3459), 1794 states have internal predecessors, (3459), 48 states have call successors, (48), 25 states have call predecessors, (48), 24 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-23 14:14:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 3553 transitions. [2022-11-23 14:14:25,048 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 3553 transitions. Word has length 60 [2022-11-23 14:14:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:25,049 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 3553 transitions. [2022-11-23 14:14:25,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-11-23 14:14:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 3553 transitions. [2022-11-23 14:14:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 14:14:25,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:25,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:25,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:14:25,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:25,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1537854482, now seen corresponding path program 1 times [2022-11-23 14:14:25,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:25,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475047125] [2022-11-23 14:14:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:14:25,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475047125] [2022-11-23 14:14:25,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475047125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:25,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:25,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717877197] [2022-11-23 14:14:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:25,157 INFO L87 Difference]: Start difference. First operand 1863 states and 3553 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:14:25,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:25,668 INFO L93 Difference]: Finished difference Result 2031 states and 3769 transitions. [2022-11-23 14:14:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:25,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2022-11-23 14:14:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:25,680 INFO L225 Difference]: With dead ends: 2031 [2022-11-23 14:14:25,680 INFO L226 Difference]: Without dead ends: 1913 [2022-11-23 14:14:25,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:25,689 INFO L413 NwaCegarLoop]: 3163 mSDtfsCounter, 27 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6296 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:25,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6296 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:14:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2022-11-23 14:14:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1883. [2022-11-23 14:14:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1805 states have (on average 1.9285318559556788) internal successors, (3481), 1810 states have internal predecessors, (3481), 50 states have call successors, (50), 27 states have call predecessors, (50), 26 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-23 14:14:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3579 transitions. [2022-11-23 14:14:25,764 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3579 transitions. Word has length 61 [2022-11-23 14:14:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:25,767 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 3579 transitions. [2022-11-23 14:14:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 14:14:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3579 transitions. [2022-11-23 14:14:25,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 14:14:25,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:25,770 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:14:25,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:14:25,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1975236521, now seen corresponding path program 1 times [2022-11-23 14:14:25,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:25,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219589397] [2022-11-23 14:14:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:25,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:14:25,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:25,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219589397] [2022-11-23 14:14:25,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219589397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:25,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:25,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:25,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118391255] [2022-11-23 14:14:25,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:25,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:25,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:25,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:25,847 INFO L87 Difference]: Start difference. First operand 1883 states and 3579 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-11-23 14:14:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:26,277 INFO L93 Difference]: Finished difference Result 2239 states and 4039 transitions. [2022-11-23 14:14:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 77 [2022-11-23 14:14:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:26,286 INFO L225 Difference]: With dead ends: 2239 [2022-11-23 14:14:26,287 INFO L226 Difference]: Without dead ends: 2002 [2022-11-23 14:14:26,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:26,289 INFO L413 NwaCegarLoop]: 3172 mSDtfsCounter, 3331 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:26,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 3239 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-11-23 14:14:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1995. [2022-11-23 14:14:26,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1883 states have (on average 1.8990971853425385) internal successors, (3576), 1889 states have internal predecessors, (3576), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-23 14:14:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3716 transitions. [2022-11-23 14:14:26,354 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3716 transitions. Word has length 77 [2022-11-23 14:14:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:26,355 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 3716 transitions. [2022-11-23 14:14:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-11-23 14:14:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3716 transitions. [2022-11-23 14:14:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 14:14:26,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:26,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:26,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:14:26,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -9510204, now seen corresponding path program 1 times [2022-11-23 14:14:26,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:26,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548542515] [2022-11-23 14:14:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:26,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:14:26,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:26,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548542515] [2022-11-23 14:14:26,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548542515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:26,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711412122] [2022-11-23 14:14:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:26,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:26,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:26,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:26,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:14:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:26,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:14:26,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:14:26,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:26,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711412122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:26,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:14:26,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 14:14:26,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590390262] [2022-11-23 14:14:26,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:26,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:14:26,777 INFO L87 Difference]: Start difference. First operand 1995 states and 3716 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-23 14:14:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:27,295 INFO L93 Difference]: Finished difference Result 2237 states and 4040 transitions. [2022-11-23 14:14:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:27,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 88 [2022-11-23 14:14:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:27,304 INFO L225 Difference]: With dead ends: 2237 [2022-11-23 14:14:27,304 INFO L226 Difference]: Without dead ends: 2001 [2022-11-23 14:14:27,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:14:27,306 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 65 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6288 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:27,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6288 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:14:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-11-23 14:14:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1993. [2022-11-23 14:14:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1881 states have (on average 1.894736842105263) internal successors, (3564), 1887 states have internal predecessors, (3564), 71 states have call successors, (71), 40 states have call predecessors, (71), 39 states have return successors, (69), 66 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-23 14:14:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3704 transitions. [2022-11-23 14:14:27,369 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3704 transitions. Word has length 88 [2022-11-23 14:14:27,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:27,369 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3704 transitions. [2022-11-23 14:14:27,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-23 14:14:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3704 transitions. [2022-11-23 14:14:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 14:14:27,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:27,371 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:14:27,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:14:27,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:27,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1920907138, now seen corresponding path program 1 times [2022-11-23 14:14:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:27,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842964033] [2022-11-23 14:14:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:14:27,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:27,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842964033] [2022-11-23 14:14:27,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842964033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:27,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386528740] [2022-11-23 14:14:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:27,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:27,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:14:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:27,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:14:27,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:14:27,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:27,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386528740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:27,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:14:27,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 14:14:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640097324] [2022-11-23 14:14:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:27,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:14:27,973 INFO L87 Difference]: Start difference. First operand 1993 states and 3704 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-11-23 14:14:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:28,393 INFO L93 Difference]: Finished difference Result 2287 states and 4066 transitions. [2022-11-23 14:14:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:28,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 88 [2022-11-23 14:14:28,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:28,402 INFO L225 Difference]: With dead ends: 2287 [2022-11-23 14:14:28,402 INFO L226 Difference]: Without dead ends: 2054 [2022-11-23 14:14:28,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:14:28,405 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 3341 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:28,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 3152 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:14:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-23 14:14:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2022-11-23 14:14:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1932 states have (on average 1.8726708074534162) internal successors, (3618), 1938 states have internal predecessors, (3618), 73 states have call successors, (73), 48 states have call predecessors, (73), 47 states have return successors, (71), 68 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-23 14:14:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3762 transitions. [2022-11-23 14:14:28,476 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3762 transitions. Word has length 88 [2022-11-23 14:14:28,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:28,476 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3762 transitions. [2022-11-23 14:14:28,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-11-23 14:14:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3762 transitions. [2022-11-23 14:14:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 14:14:28,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:28,484 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:14:28,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:14:28,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:28,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1365012435, now seen corresponding path program 1 times [2022-11-23 14:14:28,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:28,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014303067] [2022-11-23 14:14:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:14:29,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:29,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014303067] [2022-11-23 14:14:29,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014303067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:29,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553177789] [2022-11-23 14:14:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:29,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:29,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:29,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:29,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:14:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:29,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:14:29,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:14:29,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:29,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553177789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:29,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:14:29,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-23 14:14:29,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313566521] [2022-11-23 14:14:29,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:29,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:14:29,215 INFO L87 Difference]: Start difference. First operand 2054 states and 3762 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-11-23 14:14:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:29,760 INFO L93 Difference]: Finished difference Result 2606 states and 4422 transitions. [2022-11-23 14:14:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:29,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 89 [2022-11-23 14:14:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:29,769 INFO L225 Difference]: With dead ends: 2606 [2022-11-23 14:14:29,769 INFO L226 Difference]: Without dead ends: 2199 [2022-11-23 14:14:29,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:14:29,772 INFO L413 NwaCegarLoop]: 3151 mSDtfsCounter, 39 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:29,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6269 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:14:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2022-11-23 14:14:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2090. [2022-11-23 14:14:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1958 states have (on average 1.86414708886619) internal successors, (3650), 1965 states have internal predecessors, (3650), 78 states have call successors, (78), 53 states have call predecessors, (78), 52 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-23 14:14:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3804 transitions. [2022-11-23 14:14:29,856 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3804 transitions. Word has length 89 [2022-11-23 14:14:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:29,856 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3804 transitions. [2022-11-23 14:14:29,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-11-23 14:14:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3804 transitions. [2022-11-23 14:14:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 14:14:29,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:29,861 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:29,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:14:30,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:30,066 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:30,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1207598722, now seen corresponding path program 1 times [2022-11-23 14:14:30,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:30,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447178897] [2022-11-23 14:14:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 14:14:30,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:30,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447178897] [2022-11-23 14:14:30,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447178897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:14:30,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747969837] [2022-11-23 14:14:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:30,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:30,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:30,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:30,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:14:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:30,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:14:30,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:14:30,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:30,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747969837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:30,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:14:30,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-23 14:14:30,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578584392] [2022-11-23 14:14:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:30,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:14:30,313 INFO L87 Difference]: Start difference. First operand 2090 states and 3804 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-23 14:14:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:30,832 INFO L93 Difference]: Finished difference Result 2487 states and 4283 transitions. [2022-11-23 14:14:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:30,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 89 [2022-11-23 14:14:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:30,842 INFO L225 Difference]: With dead ends: 2487 [2022-11-23 14:14:30,842 INFO L226 Difference]: Without dead ends: 2193 [2022-11-23 14:14:30,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:14:30,846 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 42 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:30,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6298 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:14:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2022-11-23 14:14:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2124. [2022-11-23 14:14:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 1984 states have (on average 1.8568548387096775) internal successors, (3684), 1991 states have internal predecessors, (3684), 82 states have call successors, (82), 57 states have call predecessors, (82), 56 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-23 14:14:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3846 transitions. [2022-11-23 14:14:30,933 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3846 transitions. Word has length 89 [2022-11-23 14:14:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:30,935 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 3846 transitions. [2022-11-23 14:14:30,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-23 14:14:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3846 transitions. [2022-11-23 14:14:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 14:14:30,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:30,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:30,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:14:31,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:31,143 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 625350610, now seen corresponding path program 1 times [2022-11-23 14:14:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:31,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628696168] [2022-11-23 14:14:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 14:14:31,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:31,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628696168] [2022-11-23 14:14:31,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628696168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:31,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:31,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:14:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028241423] [2022-11-23 14:14:31,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:31,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:14:31,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:14:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:14:31,258 INFO L87 Difference]: Start difference. First operand 2124 states and 3846 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2022-11-23 14:14:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:31,955 INFO L93 Difference]: Finished difference Result 2868 states and 4744 transitions. [2022-11-23 14:14:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:14:31,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 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 90 [2022-11-23 14:14:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:31,966 INFO L225 Difference]: With dead ends: 2868 [2022-11-23 14:14:31,967 INFO L226 Difference]: Without dead ends: 2618 [2022-11-23 14:14:31,969 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 [2022-11-23 14:14:31,971 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 3404 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3404 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:31,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3404 Valid, 6353 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:14:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-11-23 14:14:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2422. [2022-11-23 14:14:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2196 states have (on average 1.7950819672131149) internal successors, (3942), 2202 states have internal predecessors, (3942), 133 states have call successors, (133), 92 states have call predecessors, (133), 91 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2022-11-23 14:14:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 4206 transitions. [2022-11-23 14:14:32,104 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 4206 transitions. Word has length 90 [2022-11-23 14:14:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:32,105 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 4206 transitions. [2022-11-23 14:14:32,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2022-11-23 14:14:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 4206 transitions. [2022-11-23 14:14:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 14:14:32,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:32,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:32,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:14:32,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash -520437671, now seen corresponding path program 1 times [2022-11-23 14:14:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:32,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288091179] [2022-11-23 14:14:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:32,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:14:32,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:14:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:14:32,208 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:14:32,208 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:14:32,209 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-23 14:14:32,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-23 14:14:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:14:32,214 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:32,220 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:14:32,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:14:32 BoogieIcfgContainer [2022-11-23 14:14:32,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:14:32,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:14:32,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:14:32,350 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:14:32,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:21" (3/4) ... [2022-11-23 14:14:32,352 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 14:14:32,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:14:32,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:14:32,455 INFO L158 Benchmark]: Toolchain (without parser) took 27054.22ms. Allocated memory was 195.0MB in the beginning and 977.3MB in the end (delta: 782.2MB). Free memory was 116.6MB in the beginning and 277.1MB in the end (delta: -160.5MB). Peak memory consumption was 623.7MB. Max. memory is 16.1GB. [2022-11-23 14:14:32,455 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 138.4MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:14:32,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4128.44ms. Allocated memory was 195.0MB in the beginning and 274.7MB in the end (delta: 79.7MB). Free memory was 116.6MB in the beginning and 175.4MB in the end (delta: -58.8MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. [2022-11-23 14:14:32,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 386.52ms. Allocated memory is still 274.7MB. Free memory was 175.4MB in the beginning and 98.9MB in the end (delta: 76.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2022-11-23 14:14:32,456 INFO L158 Benchmark]: Boogie Preprocessor took 560.32ms. Allocated memory is still 274.7MB. Free memory was 98.9MB in the beginning and 115.9MB in the end (delta: -17.0MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2022-11-23 14:14:32,457 INFO L158 Benchmark]: RCFGBuilder took 11300.93ms. Allocated memory was 274.7MB in the beginning and 977.3MB in the end (delta: 702.5MB). Free memory was 115.0MB in the beginning and 525.0MB in the end (delta: -410.0MB). Peak memory consumption was 393.9MB. Max. memory is 16.1GB. [2022-11-23 14:14:32,457 INFO L158 Benchmark]: TraceAbstraction took 10566.56ms. Allocated memory is still 977.3MB. Free memory was 524.0MB in the beginning and 288.6MB in the end (delta: 235.3MB). Peak memory consumption was 235.3MB. Max. memory is 16.1GB. [2022-11-23 14:14:32,457 INFO L158 Benchmark]: Witness Printer took 104.48ms. Allocated memory is still 977.3MB. Free memory was 288.6MB in the beginning and 277.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:14:32,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 138.4MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4128.44ms. Allocated memory was 195.0MB in the beginning and 274.7MB in the end (delta: 79.7MB). Free memory was 116.6MB in the beginning and 175.4MB in the end (delta: -58.8MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 386.52ms. Allocated memory is still 274.7MB. Free memory was 175.4MB in the beginning and 98.9MB in the end (delta: 76.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 560.32ms. Allocated memory is still 274.7MB. Free memory was 98.9MB in the beginning and 115.9MB in the end (delta: -17.0MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. * RCFGBuilder took 11300.93ms. Allocated memory was 274.7MB in the beginning and 977.3MB in the end (delta: 702.5MB). Free memory was 115.0MB in the beginning and 525.0MB in the end (delta: -410.0MB). Peak memory consumption was 393.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10566.56ms. Allocated memory is still 977.3MB. Free memory was 524.0MB in the beginning and 288.6MB in the end (delta: 235.3MB). Peak memory consumption was 235.3MB. Max. memory is 16.1GB. * Witness Printer took 104.48ms. Allocated memory is still 977.3MB. Free memory was 288.6MB in the beginning and 277.1MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int m_st ; [L11180] int t1_st ; [L11181] int m_i ; [L11182] int t1_i ; [L11183] int M_E = 2; [L11184] int T1_E = 2; [L11185] int E_M = 2; [L11186] int E_1 = 2; [L11190] int token ; [L11192] int local ; [L11651] COND FALSE !(__VERIFIER_nondet_int()) [L11654] CALL main2() [L11638] int __retres1 ; [L11642] CALL init_model() [L11553] m_i = 1 [L11554] t1_i = 1 [L11642] RET init_model() [L11643] CALL start_simulation() [L11579] int kernel_st ; [L11580] int tmp ; [L11581] int tmp___0 ; [L11585] kernel_st = 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11586] FCALL update_channels() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11587] CALL init_threads() [L11335] COND TRUE m_i == 1 [L11336] m_st = 0 [L11340] COND TRUE t1_i == 1 [L11341] t1_st = 0 [L11587] RET init_threads() [L11588] CALL fire_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11424] COND FALSE !(M_E == 0) [L11429] COND FALSE !(T1_E == 0) [L11434] COND FALSE !(E_M == 0) [L11439] COND FALSE !(E_1 == 0) [L11588] RET fire_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11589] CALL activate_threads() VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11299] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11308] COND FALSE !(t1_pc == 1) VAL [\old(m_st)=0, \old(t1_st)=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11318] __retres1 = 0 VAL [\old(m_st)=0, \old(t1_st)=0, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11589] RET activate_threads() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11590] CALL reset_delta_events() VAL [\old(E_1)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11452] COND FALSE !(M_E == 1) [L11457] COND FALSE !(T1_E == 1) [L11462] COND FALSE !(E_M == 1) [L11467] COND FALSE !(E_1 == 1) [L11590] RET reset_delta_events() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11593] COND TRUE 1 [L11596] kernel_st = 1 [L11597] CALL eval() [L11371] int tmp ; VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, 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, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp=1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND FALSE !(\read(tmp_ndt_1)) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp=1, tmp_ndt_1=0, token=0] [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] COND TRUE t1_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, 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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp=1, tmp_ndt_1=0, tmp_ndt_2=-1, token=0] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND TRUE m_pc == 0 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=0, token=0] [L11208] COND TRUE 1 [L11211] token = __VERIFIER_nondet_int() [L11212] local = token [L11213] E_1 = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, tmp_var=0, token=0] [L11214] CALL immediate_notify() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11506] CALL activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11289] COND FALSE !(m_pc == 1) VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11299] __retres1 = 0 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND FALSE !(\read(tmp)) [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11309] COND TRUE E_1 == 1 [L11310] __retres1 = 1 VAL [\old(m_st)=1, \old(t1_st)=2, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND TRUE \read(tmp___0) [L11493] t1_st = 0 [L11506] RET activate_threads() VAL [\old(m_st)=1, \old(t1_st)=2, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, token=0] [L11214] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=1, E_M=2, f=6, 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, tmp_var=0, token=0] [L11215] E_1 = 2 [L11216] m_pc = 1 [L11217] m_st = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=0, token=0] [L11391] RET master() [L11399] COND TRUE t1_st == 0 [L11400] int tmp_ndt_2; [L11401] tmp_ndt_2 = __VERIFIER_nondet_int() [L11402] COND TRUE \read(tmp_ndt_2) [L11404] t1_st = 1 [L11405] CALL transmit1() [L11253] COND FALSE !(t1_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=0] [L11256] COND TRUE t1_pc == 1 [L11272] token += 1 [L11273] E_M = 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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, token=1] [L11274] CALL immediate_notify() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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, token=1] [L11506] CALL activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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, token=1] [L11477] int tmp ; [L11478] int tmp___0 ; [L11482] CALL, EXPR is_master_triggered() [L11286] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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, token=1] [L11289] COND TRUE m_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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, token=1] [L11290] COND TRUE E_M == 1 [L11291] __retres1 = 1 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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, token=1] [L11301] return (__retres1); [L11482] RET, EXPR is_master_triggered() [L11482] tmp = is_master_triggered() [L11484] COND TRUE \read(tmp) [L11485] m_st = 0 [L11490] CALL, EXPR is_transmit1_triggered() [L11305] int __retres1 ; VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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=1, token=1] [L11308] COND TRUE t1_pc == 1 VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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=1, token=1] [L11309] COND FALSE !(E_1 == 1) VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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=1, token=1] [L11318] __retres1 = 0 VAL [\old(m_st)=2, \old(t1_st)=1, __retres1=0, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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=1, token=1] [L11320] return (__retres1); [L11490] RET, EXPR is_transmit1_triggered() [L11490] tmp___0 = is_transmit1_triggered() [L11492] COND FALSE !(\read(tmp___0)) [L11506] RET activate_threads() VAL [\old(m_st)=2, \old(t1_st)=1, a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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=1, token=1] [L11274] RET immediate_notify() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=1, f=6, 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=1, token=1] [L11275] E_M = 2 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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=1, token=1] [L11264] COND TRUE 1 [L11266] t1_pc = 1 [L11267] t1_st = 2 [L11405] RET transmit1() [L11375] COND TRUE 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11378] CALL, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=1] [L11350] int __retres1 ; [L11353] COND TRUE m_st == 0 [L11354] __retres1 = 1 [L11366] return (__retres1); [L11378] RET, EXPR exists_runnable_thread() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, exists_runnable_thread()=1, f=6, 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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11378] tmp = exists_runnable_thread() [L11380] COND TRUE \read(tmp) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp=1, tmp_ndt_1=1, tmp_ndt_2=-2, token=1] [L11385] COND TRUE m_st == 0 [L11386] int tmp_ndt_1; [L11387] tmp_ndt_1 = __VERIFIER_nondet_int() [L11388] COND TRUE \read(tmp_ndt_1) [L11390] m_st = 1 [L11391] CALL master() [L11195] int tmp_var = __VERIFIER_nondet_int(); [L11197] COND FALSE !(m_pc == 0) VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=5, token=1] [L11200] COND TRUE m_pc == 1 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=5, token=1] [L11222] COND FALSE !(token != local + 1) [L11227] COND TRUE tmp_var <= 5 [L11228] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=5, token=1] [L11233] COND TRUE tmp_var <= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=5, token=1] [L11234] COND TRUE tmp_var >= 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=5, token=1] [L11235] COND TRUE tmp_var == 5 VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, tmp_var=5, token=1] [L11236] CALL error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=1] [L11173] reach_error() VAL [a=1, a12=4, a15=1, a16=1, a2=10, a20=5, a25=1, a27=1, a9=18, b=2, c=3, d=4, e=5, E_1=2, E_M=2, f=6, 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, token=1] - UnprovableResult [Line: 11049]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1716 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17129 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17119 mSDsluCounter, 53584 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25102 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4204 IncrementalHoareTripleChecker+Invalid, 4318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 28482 mSDtfsCounter, 4204 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2422occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 436 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1124 NumberOfCodeBlocks, 1124 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1018 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1553 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 488/531 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! [2022-11-23 14:14:32,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2603541f-5b6e-42c2-aa3f-060ad7df284f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE