./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7adc5be84218941c02109a6f05aa2044beb278121fd387aba807705fdb759027 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:15:49,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:15:49,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:15:49,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:15:49,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:15:49,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:15:49,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:15:49,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:15:49,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:15:49,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:15:49,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:15:49,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:15:49,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:15:49,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:15:49,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:15:49,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:15:49,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:15:49,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:15:49,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:15:49,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:15:49,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:15:49,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:15:49,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:15:49,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:15:49,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:15:49,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:15:49,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:15:49,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:15:49,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:15:49,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:15:49,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:15:49,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:15:49,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:15:49,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:15:49,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:15:49,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:15:49,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:15:49,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:15:49,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:15:49,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:15:49,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:15:49,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:15:49,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:15:49,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:15:49,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:15:49,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:15:49,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:15:49,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:15:49,291 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:15:49,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:15:49,292 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:15:49,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:15:49,292 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:15:49,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:15:49,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:15:49,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:15:49,293 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:15:49,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:15:49,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:15:49,294 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:15:49,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:15:49,294 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:15:49,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:15:49,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:15:49,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:15:49,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:15:49,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:15:49,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:15:49,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:15:49,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:15:49,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:15:49,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:15:49,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:15:49,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:15:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:15:49,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:15:49,297 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:15:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:15:49,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:15:49,298 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:15:49,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:15:49,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:15:49,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:15:49,298 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_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7adc5be84218941c02109a6f05aa2044beb278121fd387aba807705fdb759027 [2022-12-14 07:15:49,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:15:49,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:15:49,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:15:49,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:15:49,489 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:15:49,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c [2022-12-14 07:15:52,089 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:15:52,476 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:15:52,476 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c [2022-12-14 07:15:52,507 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/data/fb8b5d7fd/8fe1127552e64d6fb08798404f603477/FLAG8e9d209fd [2022-12-14 07:15:52,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/data/fb8b5d7fd/8fe1127552e64d6fb08798404f603477 [2022-12-14 07:15:52,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:15:52,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:15:52,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:15:52,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:15:52,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:15:52,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:15:52" (1/1) ... [2022-12-14 07:15:52,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e36b4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:52, skipping insertion in model container [2022-12-14 07:15:52,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:15:52" (1/1) ... [2022-12-14 07:15:52,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:15:52,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:15:54,224 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_66d3ff2a-ff11-4571-984e-62fd805f678a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[380323,380336] [2022-12-14 07:15:54,245 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_66d3ff2a-ff11-4571-984e-62fd805f678a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[383339,383352] [2022-12-14 07:15:54,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:15:54,373 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:15:55,173 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_66d3ff2a-ff11-4571-984e-62fd805f678a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[380323,380336] [2022-12-14 07:15:55,177 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_66d3ff2a-ff11-4571-984e-62fd805f678a/sv-benchmarks/c/combinations/Problem05_label45+token_ring.01.cil-2.c[383339,383352] [2022-12-14 07:15:55,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:15:55,216 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:15:55,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55 WrapperNode [2022-12-14 07:15:55,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:15:55,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:15:55,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:15:55,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:15:55,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,585 INFO L138 Inliner]: procedures = 46, calls = 45, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 12566 [2022-12-14 07:15:55,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:15:55,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:15:55,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:15:55,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:15:55,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:15:55,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:15:55,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:15:55,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:15:55,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (1/1) ... [2022-12-14 07:15:55,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:15:55,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:15:55,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:15:55,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:15:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:15:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-14 07:15:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-14 07:15:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 07:15:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 07:15:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 07:15:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 07:15:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 07:15:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 07:15:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 07:15:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 07:15:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 07:15:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 07:15:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:15:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 07:15:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 07:15:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:15:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:15:56,129 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:15:56,131 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:16:01,564 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:16:02,859 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:16:02,859 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 07:16:02,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:16:02 BoogieIcfgContainer [2022-12-14 07:16:02,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:16:02,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:16:02,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:16:02,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:16:02,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:15:52" (1/3) ... [2022-12-14 07:16:02,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e9a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:16:02, skipping insertion in model container [2022-12-14 07:16:02,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:15:55" (2/3) ... [2022-12-14 07:16:02,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e9a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:16:02, skipping insertion in model container [2022-12-14 07:16:02,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:16:02" (3/3) ... [2022-12-14 07:16:02,869 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.01.cil-2.c [2022-12-14 07:16:02,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:16:02,884 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 07:16:02,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:16:02,952 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;@126ce655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:16:02,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 07:16:02,960 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) [2022-12-14 07:16:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 07:16:02,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:02,968 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] [2022-12-14 07:16:02,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:02,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1589172554, now seen corresponding path program 1 times [2022-12-14 07:16:02,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:02,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592072525] [2022-12-14 07:16:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:02,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:16:03,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:03,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592072525] [2022-12-14 07:16:03,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592072525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:03,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:03,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:16:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619376821] [2022-12-14 07:16:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:03,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:16:03,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:16:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:16:03,231 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) [2022-12-14 07:16:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:03,888 INFO L93 Difference]: Finished difference Result 3481 states and 6831 transitions. [2022-12-14 07:16:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:16:03,890 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 [2022-12-14 07:16:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:03,906 INFO L225 Difference]: With dead ends: 3481 [2022-12-14 07:16:03,906 INFO L226 Difference]: Without dead ends: 1764 [2022-12-14 07:16:03,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:16:03,914 INFO L413 NwaCegarLoop]: 3188 mSDtfsCounter, 3424 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3424 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:03,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3424 Valid, 6320 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 07:16:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-12-14 07:16:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1763. [2022-12-14 07:16:04,021 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) [2022-12-14 07:16:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 3428 transitions. [2022-12-14 07:16:04,032 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 3428 transitions. Word has length 35 [2022-12-14 07:16:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:04,033 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 3428 transitions. [2022-12-14 07:16:04,033 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) [2022-12-14 07:16:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 3428 transitions. [2022-12-14 07:16:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 07:16:04,037 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:04,037 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] [2022-12-14 07:16:04,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:16:04,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:04,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1555306410, now seen corresponding path program 1 times [2022-12-14 07:16:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:04,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539890308] [2022-12-14 07:16:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:04,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 07:16:04,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:04,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539890308] [2022-12-14 07:16:04,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539890308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:04,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:04,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 07:16:04,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811409713] [2022-12-14 07:16:04,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:04,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:16:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:16:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:16:04,405 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) [2022-12-14 07:16:05,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:05,128 INFO L93 Difference]: Finished difference Result 1995 states and 3731 transitions. [2022-12-14 07:16:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:16:05,129 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 [2022-12-14 07:16:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:05,137 INFO L225 Difference]: With dead ends: 1995 [2022-12-14 07:16:05,138 INFO L226 Difference]: Without dead ends: 1879 [2022-12-14 07:16:05,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 07:16:05,140 INFO L413 NwaCegarLoop]: 3147 mSDtfsCounter, 3444 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3454 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, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:05,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3454 Valid, 9369 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:16:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-12-14 07:16:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1863. [2022-12-14 07:16:05,190 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) [2022-12-14 07:16:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 3553 transitions. [2022-12-14 07:16:05,195 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 3553 transitions. Word has length 60 [2022-12-14 07:16:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 1863 states and 3553 transitions. [2022-12-14 07:16:05,196 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) [2022-12-14 07:16:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 3553 transitions. [2022-12-14 07:16:05,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 07:16:05,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:05,198 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] [2022-12-14 07:16:05,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:16:05,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:05,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1230129425, now seen corresponding path program 1 times [2022-12-14 07:16:05,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:05,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775076157] [2022-12-14 07:16:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:05,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 07:16:05,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:05,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775076157] [2022-12-14 07:16:05,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775076157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:05,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:05,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:16:05,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599760374] [2022-12-14 07:16:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:05,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:05,246 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) [2022-12-14 07:16:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:05,649 INFO L93 Difference]: Finished difference Result 2031 states and 3769 transitions. [2022-12-14 07:16:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:05,649 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 [2022-12-14 07:16:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:05,658 INFO L225 Difference]: With dead ends: 2031 [2022-12-14 07:16:05,658 INFO L226 Difference]: Without dead ends: 1913 [2022-12-14 07:16:05,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:05,661 INFO L413 NwaCegarLoop]: 3163 mSDtfsCounter, 27 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:05,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6296 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:16:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2022-12-14 07:16:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1883. [2022-12-14 07:16:05,716 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) [2022-12-14 07:16:05,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3579 transitions. [2022-12-14 07:16:05,724 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3579 transitions. Word has length 61 [2022-12-14 07:16:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:05,724 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 3579 transitions. [2022-12-14 07:16:05,725 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) [2022-12-14 07:16:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3579 transitions. [2022-12-14 07:16:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 07:16:05,728 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:05,728 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] [2022-12-14 07:16:05,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:16:05,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:05,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1932926593, now seen corresponding path program 1 times [2022-12-14 07:16:05,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:05,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144383323] [2022-12-14 07:16:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:16:05,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:05,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144383323] [2022-12-14 07:16:05,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144383323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:05,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:05,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:16:05,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717877515] [2022-12-14 07:16:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:05,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:05,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:05,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:05,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:05,786 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) [2022-12-14 07:16:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:06,197 INFO L93 Difference]: Finished difference Result 2239 states and 4039 transitions. [2022-12-14 07:16:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:06,197 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 [2022-12-14 07:16:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:06,207 INFO L225 Difference]: With dead ends: 2239 [2022-12-14 07:16:06,207 INFO L226 Difference]: Without dead ends: 2002 [2022-12-14 07:16:06,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:16:06,209 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 [2022-12-14 07:16:06,210 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] [2022-12-14 07:16:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-12-14 07:16:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1995. [2022-12-14 07:16:06,254 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) [2022-12-14 07:16:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3716 transitions. [2022-12-14 07:16:06,260 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3716 transitions. Word has length 77 [2022-12-14 07:16:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:06,260 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 3716 transitions. [2022-12-14 07:16:06,260 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) [2022-12-14 07:16:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3716 transitions. [2022-12-14 07:16:06,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 07:16:06,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:06,262 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] [2022-12-14 07:16:06,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:16:06,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:06,263 INFO L85 PathProgramCache]: Analyzing trace with hash -502140693, now seen corresponding path program 1 times [2022-12-14 07:16:06,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:06,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748891428] [2022-12-14 07:16:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:06,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:16:06,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:06,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748891428] [2022-12-14 07:16:06,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748891428] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:06,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228961210] [2022-12-14 07:16:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:06,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:06,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:06,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:06,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:16:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:06,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:16:06,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:06,542 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 07:16:06,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:16:06,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228961210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:06,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:16:06,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 07:16:06,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882447160] [2022-12-14 07:16:06,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:06,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:06,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:06,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:06,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:16:06,545 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) [2022-12-14 07:16:06,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:06,894 INFO L93 Difference]: Finished difference Result 2237 states and 4040 transitions. [2022-12-14 07:16:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:06,895 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 [2022-12-14 07:16:06,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:06,901 INFO L225 Difference]: With dead ends: 2237 [2022-12-14 07:16:06,901 INFO L226 Difference]: Without dead ends: 2001 [2022-12-14 07:16:06,902 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 [2022-12-14 07:16:06,903 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 65 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:06,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6288 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:16:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-12-14 07:16:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1993. [2022-12-14 07:16:06,947 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) [2022-12-14 07:16:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3704 transitions. [2022-12-14 07:16:06,952 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3704 transitions. Word has length 88 [2022-12-14 07:16:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:06,952 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3704 transitions. [2022-12-14 07:16:06,953 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) [2022-12-14 07:16:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3704 transitions. [2022-12-14 07:16:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 07:16:06,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:06,955 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] [2022-12-14 07:16:06,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:16:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:07,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:07,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1428276649, now seen corresponding path program 1 times [2022-12-14 07:16:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:07,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348592514] [2022-12-14 07:16:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:16:07,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:07,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348592514] [2022-12-14 07:16:07,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348592514] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:07,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569260415] [2022-12-14 07:16:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:07,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:07,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:07,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:07,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:16:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:07,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 07:16:07,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 07:16:07,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:16:07,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569260415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:07,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:16:07,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 07:16:07,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565669588] [2022-12-14 07:16:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:07,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:07,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:16:07,397 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) [2022-12-14 07:16:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:07,687 INFO L93 Difference]: Finished difference Result 2287 states and 4066 transitions. [2022-12-14 07:16:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:07,688 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 [2022-12-14 07:16:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:07,693 INFO L225 Difference]: With dead ends: 2287 [2022-12-14 07:16:07,694 INFO L226 Difference]: Without dead ends: 2054 [2022-12-14 07:16:07,695 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 [2022-12-14 07:16:07,695 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 3341 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:07,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 3152 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:16:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-12-14 07:16:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2054. [2022-12-14 07:16:07,736 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) [2022-12-14 07:16:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3762 transitions. [2022-12-14 07:16:07,741 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3762 transitions. Word has length 88 [2022-12-14 07:16:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:07,741 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3762 transitions. [2022-12-14 07:16:07,741 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) [2022-12-14 07:16:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3762 transitions. [2022-12-14 07:16:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 07:16:07,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:07,743 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] [2022-12-14 07:16:07,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:16:07,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:07,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:07,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1528972454, now seen corresponding path program 1 times [2022-12-14 07:16:07,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:07,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519007244] [2022-12-14 07:16:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:07,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 07:16:08,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:08,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519007244] [2022-12-14 07:16:08,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519007244] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:08,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441176385] [2022-12-14 07:16:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:08,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:08,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:08,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:16:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:08,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:16:08,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 07:16:08,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:16:08,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441176385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:08,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:16:08,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-14 07:16:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757857571] [2022-12-14 07:16:08,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:08,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:16:08,170 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) [2022-12-14 07:16:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:08,567 INFO L93 Difference]: Finished difference Result 2606 states and 4422 transitions. [2022-12-14 07:16:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:08,568 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 [2022-12-14 07:16:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:08,576 INFO L225 Difference]: With dead ends: 2606 [2022-12-14 07:16:08,577 INFO L226 Difference]: Without dead ends: 2199 [2022-12-14 07:16:08,579 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 [2022-12-14 07:16:08,579 INFO L413 NwaCegarLoop]: 3151 mSDtfsCounter, 39 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:08,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6269 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:16:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2022-12-14 07:16:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2090. [2022-12-14 07:16:08,644 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) [2022-12-14 07:16:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3804 transitions. [2022-12-14 07:16:08,650 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3804 transitions. Word has length 89 [2022-12-14 07:16:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:08,651 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3804 transitions. [2022-12-14 07:16:08,651 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) [2022-12-14 07:16:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3804 transitions. [2022-12-14 07:16:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 07:16:08,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:08,653 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] [2022-12-14 07:16:08,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:16:08,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:08,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:08,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1665015675, now seen corresponding path program 1 times [2022-12-14 07:16:08,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:08,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471256417] [2022-12-14 07:16:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:08,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 07:16:09,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:09,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471256417] [2022-12-14 07:16:09,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471256417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:09,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604320124] [2022-12-14 07:16:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:09,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:09,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:09,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:09,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:16:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:09,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 07:16:09,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:16:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:16:09,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:16:09,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604320124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:09,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:16:09,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-14 07:16:09,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626192862] [2022-12-14 07:16:09,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:09,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:16:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:16:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:16:09,108 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) [2022-12-14 07:16:09,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:09,419 INFO L93 Difference]: Finished difference Result 2487 states and 4283 transitions. [2022-12-14 07:16:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:16:09,420 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 [2022-12-14 07:16:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:09,426 INFO L225 Difference]: With dead ends: 2487 [2022-12-14 07:16:09,426 INFO L226 Difference]: Without dead ends: 2193 [2022-12-14 07:16:09,427 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 [2022-12-14 07:16:09,428 INFO L413 NwaCegarLoop]: 3164 mSDtfsCounter, 42 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:09,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6298 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:16:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2022-12-14 07:16:09,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2124. [2022-12-14 07:16:09,470 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) [2022-12-14 07:16:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3846 transitions. [2022-12-14 07:16:09,474 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3846 transitions. Word has length 89 [2022-12-14 07:16:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:09,475 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 3846 transitions. [2022-12-14 07:16:09,475 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) [2022-12-14 07:16:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3846 transitions. [2022-12-14 07:16:09,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 07:16:09,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:09,477 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] [2022-12-14 07:16:09,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:16:09,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 07:16:09,678 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash -348226855, now seen corresponding path program 1 times [2022-12-14 07:16:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:09,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140890619] [2022-12-14 07:16:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 07:16:09,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:09,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140890619] [2022-12-14 07:16:09,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140890619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:16:09,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:16:09,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:16:09,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028342068] [2022-12-14 07:16:09,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:16:09,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:16:09,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:16:09,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:16:09,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:16:09,768 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) [2022-12-14 07:16:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:16:10,218 INFO L93 Difference]: Finished difference Result 2868 states and 4744 transitions. [2022-12-14 07:16:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:16:10,219 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 [2022-12-14 07:16:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:16:10,224 INFO L225 Difference]: With dead ends: 2868 [2022-12-14 07:16:10,225 INFO L226 Difference]: Without dead ends: 2618 [2022-12-14 07:16:10,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:16:10,226 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 3404 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:16:10,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3404 Valid, 6353 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:16:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-12-14 07:16:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2422. [2022-12-14 07:16:10,288 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) [2022-12-14 07:16:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 4206 transitions. [2022-12-14 07:16:10,295 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 4206 transitions. Word has length 90 [2022-12-14 07:16:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:16:10,295 INFO L495 AbstractCegarLoop]: Abstraction has 2422 states and 4206 transitions. [2022-12-14 07:16:10,296 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) [2022-12-14 07:16:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 4206 transitions. [2022-12-14 07:16:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 07:16:10,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:16:10,297 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] [2022-12-14 07:16:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:16:10,297 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:16:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:16:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash -452547598, now seen corresponding path program 1 times [2022-12-14 07:16:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:16:10,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150638711] [2022-12-14 07:16:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:16:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:16:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:16:10,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:16:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:16:10,356 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:16:10,356 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:16:10,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 07:16:10,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 07:16:10,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:16:10,361 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:16:10,365 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:16:10,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:16:10 BoogieIcfgContainer [2022-12-14 07:16:10,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:16:10,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:16:10,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:16:10,431 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:16:10,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:16:02" (3/4) ... [2022-12-14 07:16:10,433 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 07:16:10,482 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:16:10,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:16:10,482 INFO L158 Benchmark]: Toolchain (without parser) took 17816.90ms. Allocated memory was 153.1MB in the beginning and 838.9MB in the end (delta: 685.8MB). Free memory was 83.8MB in the beginning and 208.6MB in the end (delta: -124.8MB). Peak memory consumption was 563.7MB. Max. memory is 16.1GB. [2022-12-14 07:16:10,482 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 119.5MB. Free memory was 93.1MB in the beginning and 93.1MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:16:10,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2550.43ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 65.2MB in the end (delta: 18.6MB). Peak memory consumption was 79.1MB. Max. memory is 16.1GB. [2022-12-14 07:16:10,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 368.29ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 65.2MB in the beginning and 90.6MB in the end (delta: -25.4MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2022-12-14 07:16:10,483 INFO L158 Benchmark]: Boogie Preprocessor took 341.60ms. Allocated memory is still 222.3MB. Free memory was 90.6MB in the beginning and 66.1MB in the end (delta: 24.5MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2022-12-14 07:16:10,483 INFO L158 Benchmark]: RCFGBuilder took 6934.18ms. Allocated memory was 222.3MB in the beginning and 838.9MB in the end (delta: 616.6MB). Free memory was 66.1MB in the beginning and 583.3MB in the end (delta: -517.2MB). Peak memory consumption was 494.0MB. Max. memory is 16.1GB. [2022-12-14 07:16:10,483 INFO L158 Benchmark]: TraceAbstraction took 7566.05ms. Allocated memory is still 838.9MB. Free memory was 582.3MB in the beginning and 219.1MB in the end (delta: 363.2MB). Peak memory consumption was 364.3MB. Max. memory is 16.1GB. [2022-12-14 07:16:10,483 INFO L158 Benchmark]: Witness Printer took 51.06ms. Allocated memory is still 838.9MB. Free memory was 219.1MB in the beginning and 208.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 07:16:10,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 119.5MB. Free memory was 93.1MB in the beginning and 93.1MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2550.43ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 65.2MB in the end (delta: 18.6MB). Peak memory consumption was 79.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 368.29ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 65.2MB in the beginning and 90.6MB in the end (delta: -25.4MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 341.60ms. Allocated memory is still 222.3MB. Free memory was 90.6MB in the beginning and 66.1MB in the end (delta: 24.5MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. * RCFGBuilder took 6934.18ms. Allocated memory was 222.3MB in the beginning and 838.9MB in the end (delta: 616.6MB). Free memory was 66.1MB in the beginning and 583.3MB in the end (delta: -517.2MB). Peak memory consumption was 494.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7566.05ms. Allocated memory is still 838.9MB. Free memory was 582.3MB in the beginning and 219.1MB in the end (delta: 363.2MB). Peak memory consumption was 364.3MB. Max. memory is 16.1GB. * Witness Printer took 51.06ms. Allocated memory is still 838.9MB. Free memory was 219.1MB in the beginning and 208.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 11088]: 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: 7.4s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17127 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17117 mSDsluCounter, 53584 SdHoareTripleChecker+Invalid, 2.7s 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, 0.1s 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: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 436 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s 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! [2022-12-14 07:16:10,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d3ff2a-ff11-4571-984e-62fd805f678a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE