./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba --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 5975f0f3825b3a6653676f33bd69d14e1e58fcf0306bfb5508ab91dc8951d6c4 --- 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-b5237d8 [2022-11-22 02:12:31,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:12:31,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:12:31,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:12:31,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:12:31,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:12:31,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:12:31,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:12:31,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:12:31,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:12:31,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:12:31,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:12:31,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:12:31,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:12:31,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:12:31,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:12:31,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:12:31,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:12:31,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:12:31,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:12:31,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:12:31,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:12:31,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:12:31,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:12:31,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:12:31,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:12:31,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:12:31,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:12:31,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:12:31,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:12:31,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:12:31,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:12:31,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:12:31,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:12:31,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:12:31,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:12:31,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:12:31,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:12:31,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:12:31,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:12:31,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:12:31,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:12:31,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:12:31,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:12:31,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:12:31,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:12:31,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:12:31,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:12:31,517 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:12:31,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:12:31,517 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:12:31,518 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:12:31,518 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:12:31,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:12:31,518 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:12:31,519 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:12:31,519 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:12:31,519 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:12:31,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:12:31,520 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:12:31,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:12:31,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:12:31,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:12:31,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:12:31,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:12:31,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:12:31,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:12:31,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:12:31,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:12:31,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:12:31,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:12:31,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:12:31,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:12:31,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:12:31,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:12:31,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:12:31,524 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:12:31,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:12:31,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:12:31,525 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:12:31,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:12:31,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:12:31,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:12:31,526 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_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5975f0f3825b3a6653676f33bd69d14e1e58fcf0306bfb5508ab91dc8951d6c4 [2022-11-22 02:12:31,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:12:31,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:12:31,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:12:31,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:12:31,922 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:12:31,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/systemc/transmitter.13.cil.c [2022-11-22 02:12:35,164 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:12:35,458 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:12:35,459 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/sv-benchmarks/c/systemc/transmitter.13.cil.c [2022-11-22 02:12:35,474 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/data/eb703d219/c390cf2871d547b6bc56efe65c1d9f90/FLAGcb860130d [2022-11-22 02:12:35,502 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/data/eb703d219/c390cf2871d547b6bc56efe65c1d9f90 [2022-11-22 02:12:35,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:12:35,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:12:35,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:12:35,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:12:35,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:12:35,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:12:35" (1/1) ... [2022-11-22 02:12:35,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b118163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:35, skipping insertion in model container [2022-11-22 02:12:35,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:12:35" (1/1) ... [2022-11-22 02:12:35,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:12:35,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:12:35,757 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_fecc3dcd-91de-4eaf-8485-69c14e9a046e/sv-benchmarks/c/systemc/transmitter.13.cil.c[706,719] [2022-11-22 02:12:35,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:12:35,986 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:12:35,995 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_fecc3dcd-91de-4eaf-8485-69c14e9a046e/sv-benchmarks/c/systemc/transmitter.13.cil.c[706,719] [2022-11-22 02:12:36,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:12:36,097 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:12:36,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36 WrapperNode [2022-11-22 02:12:36,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:12:36,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:12:36,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:12:36,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:12:36,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,179 INFO L138 Inliner]: procedures = 54, calls = 69, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 891 [2022-11-22 02:12:36,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:12:36,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:12:36,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:12:36,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:12:36,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:12:36,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:12:36,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:12:36,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:12:36,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (1/1) ... [2022-11-22 02:12:36,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:12:36,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:12:36,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:12:36,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fecc3dcd-91de-4eaf-8485-69c14e9a046e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:12:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:12:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 02:12:36,415 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 02:12:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 02:12:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 02:12:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 02:12:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 02:12:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 02:12:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 02:12:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 02:12:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 02:12:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 02:12:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 02:12:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:12:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:12:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:12:36,590 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:12:36,611 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:12:37,585 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:12:38,307 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:12:38,307 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-22 02:12:38,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:12:38 BoogieIcfgContainer [2022-11-22 02:12:38,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:12:38,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:12:38,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:12:38,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:12:38,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:12:35" (1/3) ... [2022-11-22 02:12:38,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6863e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:12:38, skipping insertion in model container [2022-11-22 02:12:38,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:12:36" (2/3) ... [2022-11-22 02:12:38,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6863e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:12:38, skipping insertion in model container [2022-11-22 02:12:38,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:12:38" (3/3) ... [2022-11-22 02:12:38,331 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.13.cil.c [2022-11-22 02:12:38,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:12:38,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:12:38,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:12:38,454 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;@5753255, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:12:38,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:12:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 163 states have (on average 1.5644171779141105) internal successors, (255), 165 states have internal predecessors, (255), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-22 02:12:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:38,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:38,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:38,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash -383573431, now seen corresponding path program 1 times [2022-11-22 02:12:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:38,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345465646] [2022-11-22 02:12:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:38,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:39,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345465646] [2022-11-22 02:12:39,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345465646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:39,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:39,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:12:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751715691] [2022-11-22 02:12:39,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:39,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:12:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:12:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:39,254 INFO L87 Difference]: Start difference. First operand has 197 states, 163 states have (on average 1.5644171779141105) internal successors, (255), 165 states have internal predecessors, (255), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:39,887 INFO L93 Difference]: Finished difference Result 574 states and 925 transitions. [2022-11-22 02:12:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:12:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:39,904 INFO L225 Difference]: With dead ends: 574 [2022-11-22 02:12:39,904 INFO L226 Difference]: Without dead ends: 378 [2022-11-22 02:12:39,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:39,914 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 532 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:39,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 854 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:12:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-22 02:12:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 375. [2022-11-22 02:12:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 315 states have (on average 1.5238095238095237) internal successors, (480), 316 states have internal predecessors, (480), 47 states have call successors, (47), 12 states have call predecessors, (47), 12 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-22 02:12:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 574 transitions. [2022-11-22 02:12:40,001 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 574 transitions. Word has length 81 [2022-11-22 02:12:40,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:40,002 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 574 transitions. [2022-11-22 02:12:40,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 574 transitions. [2022-11-22 02:12:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:40,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:40,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:40,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:12:40,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1956072650, now seen corresponding path program 1 times [2022-11-22 02:12:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:40,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332776416] [2022-11-22 02:12:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:40,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332776416] [2022-11-22 02:12:40,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332776416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:40,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:40,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:12:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533095055] [2022-11-22 02:12:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:40,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:12:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:12:40,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:12:40,371 INFO L87 Difference]: Start difference. First operand 375 states and 574 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:41,324 INFO L93 Difference]: Finished difference Result 1287 states and 1995 transitions. [2022-11-22 02:12:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:12:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:41,331 INFO L225 Difference]: With dead ends: 1287 [2022-11-22 02:12:41,331 INFO L226 Difference]: Without dead ends: 890 [2022-11-22 02:12:41,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:12:41,335 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 1136 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:41,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1362 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:12:41,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-11-22 02:12:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2022-11-22 02:12:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 757 states have (on average 1.513870541611625) internal successors, (1146), 746 states have internal predecessors, (1146), 92 states have call successors, (92), 26 states have call predecessors, (92), 28 states have return successors, (106), 106 states have call predecessors, (106), 92 states have call successors, (106) [2022-11-22 02:12:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1344 transitions. [2022-11-22 02:12:41,477 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1344 transitions. Word has length 81 [2022-11-22 02:12:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:41,477 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1344 transitions. [2022-11-22 02:12:41,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1344 transitions. [2022-11-22 02:12:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:41,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:41,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:41,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:12:41,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:41,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1961251829, now seen corresponding path program 1 times [2022-11-22 02:12:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:41,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553951645] [2022-11-22 02:12:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:41,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553951645] [2022-11-22 02:12:41,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553951645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:41,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:41,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:12:41,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367379524] [2022-11-22 02:12:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:41,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:12:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:12:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:12:41,661 INFO L87 Difference]: Start difference. First operand 878 states and 1344 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:42,634 INFO L93 Difference]: Finished difference Result 3089 states and 4796 transitions. [2022-11-22 02:12:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:12:42,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:42,655 INFO L225 Difference]: With dead ends: 3089 [2022-11-22 02:12:42,655 INFO L226 Difference]: Without dead ends: 2165 [2022-11-22 02:12:42,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:12:42,668 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1136 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:42,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1124 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:12:42,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2022-11-22 02:12:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1681. [2022-11-22 02:12:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1452 states have (on average 1.5151515151515151) internal successors, (2200), 1442 states have internal predecessors, (2200), 172 states have call successors, (172), 50 states have call predecessors, (172), 56 states have return successors, (213), 189 states have call predecessors, (213), 172 states have call successors, (213) [2022-11-22 02:12:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2585 transitions. [2022-11-22 02:12:42,853 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2585 transitions. Word has length 81 [2022-11-22 02:12:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:42,855 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2585 transitions. [2022-11-22 02:12:42,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2585 transitions. [2022-11-22 02:12:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:42,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:42,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:42,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:12:42,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash -141525910, now seen corresponding path program 1 times [2022-11-22 02:12:42,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:42,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525853800] [2022-11-22 02:12:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:42,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:43,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:43,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525853800] [2022-11-22 02:12:43,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525853800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:43,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:43,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:12:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587271744] [2022-11-22 02:12:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:12:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:12:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:43,075 INFO L87 Difference]: Start difference. First operand 1681 states and 2585 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:43,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:43,709 INFO L93 Difference]: Finished difference Result 5004 states and 7834 transitions. [2022-11-22 02:12:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:12:43,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:43,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:43,734 INFO L225 Difference]: With dead ends: 5004 [2022-11-22 02:12:43,734 INFO L226 Difference]: Without dead ends: 3328 [2022-11-22 02:12:43,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:43,756 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 547 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:43,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 852 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:12:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2022-11-22 02:12:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 3316. [2022-11-22 02:12:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 2871 states have (on average 1.507488679902473) internal successors, (4328), 2851 states have internal predecessors, (4328), 332 states have call successors, (332), 100 states have call predecessors, (332), 112 states have return successors, (411), 365 states have call predecessors, (411), 332 states have call successors, (411) [2022-11-22 02:12:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 5071 transitions. [2022-11-22 02:12:44,036 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 5071 transitions. Word has length 81 [2022-11-22 02:12:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:44,037 INFO L495 AbstractCegarLoop]: Abstraction has 3316 states and 5071 transitions. [2022-11-22 02:12:44,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 5071 transitions. [2022-11-22 02:12:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:44,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:44,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:44,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:12:44,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash -133775351, now seen corresponding path program 1 times [2022-11-22 02:12:44,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:44,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082191685] [2022-11-22 02:12:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:44,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:44,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082191685] [2022-11-22 02:12:44,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082191685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:44,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:44,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:12:44,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949713567] [2022-11-22 02:12:44,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:44,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:12:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:12:44,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:44,182 INFO L87 Difference]: Start difference. First operand 3316 states and 5071 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:44,953 INFO L93 Difference]: Finished difference Result 9881 states and 15377 transitions. [2022-11-22 02:12:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:12:44,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:44,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:45,005 INFO L225 Difference]: With dead ends: 9881 [2022-11-22 02:12:45,006 INFO L226 Difference]: Without dead ends: 6570 [2022-11-22 02:12:45,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:45,027 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 553 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:45,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 852 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:12:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2022-11-22 02:12:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 6548. [2022-11-22 02:12:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6548 states, 5679 states have (on average 1.4993836943123788) internal successors, (8515), 5640 states have internal predecessors, (8515), 644 states have call successors, (644), 200 states have call predecessors, (644), 224 states have return successors, (796), 708 states have call predecessors, (796), 644 states have call successors, (796) [2022-11-22 02:12:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 9955 transitions. [2022-11-22 02:12:45,575 INFO L78 Accepts]: Start accepts. Automaton has 6548 states and 9955 transitions. Word has length 81 [2022-11-22 02:12:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:45,576 INFO L495 AbstractCegarLoop]: Abstraction has 6548 states and 9955 transitions. [2022-11-22 02:12:45,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6548 states and 9955 transitions. [2022-11-22 02:12:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:45,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:45,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:45,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:12:45,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1864112408, now seen corresponding path program 1 times [2022-11-22 02:12:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:45,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348755779] [2022-11-22 02:12:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:45,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:45,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348755779] [2022-11-22 02:12:45,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348755779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:45,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:45,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:12:45,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935883593] [2022-11-22 02:12:45,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:12:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:45,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:12:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:12:45,733 INFO L87 Difference]: Start difference. First operand 6548 states and 9955 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:47,340 INFO L93 Difference]: Finished difference Result 22369 states and 34638 transitions. [2022-11-22 02:12:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:12:47,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:47,465 INFO L225 Difference]: With dead ends: 22369 [2022-11-22 02:12:47,465 INFO L226 Difference]: Without dead ends: 15450 [2022-11-22 02:12:47,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:12:47,507 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1136 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:47,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1124 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:12:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15450 states. [2022-11-22 02:12:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15450 to 12664. [2022-11-22 02:12:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12664 states, 10979 states have (on average 1.498041716003279) internal successors, (16447), 10956 states have internal predecessors, (16447), 1236 states have call successors, (1236), 392 states have call predecessors, (1236), 448 states have return successors, (1580), 1316 states have call predecessors, (1580), 1236 states have call successors, (1580) [2022-11-22 02:12:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12664 states to 12664 states and 19263 transitions. [2022-11-22 02:12:48,601 INFO L78 Accepts]: Start accepts. Automaton has 12664 states and 19263 transitions. Word has length 81 [2022-11-22 02:12:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:48,602 INFO L495 AbstractCegarLoop]: Abstraction has 12664 states and 19263 transitions. [2022-11-22 02:12:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 12664 states and 19263 transitions. [2022-11-22 02:12:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:48,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:48,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:48,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:12:48,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1155752199, now seen corresponding path program 1 times [2022-11-22 02:12:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:48,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504520897] [2022-11-22 02:12:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:48,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:48,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504520897] [2022-11-22 02:12:48,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504520897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:48,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:48,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:12:48,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972355097] [2022-11-22 02:12:48,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:12:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:12:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:12:48,763 INFO L87 Difference]: Start difference. First operand 12664 states and 19263 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:51,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:51,229 INFO L93 Difference]: Finished difference Result 42621 states and 66146 transitions. [2022-11-22 02:12:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:12:51,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:51,410 INFO L225 Difference]: With dead ends: 42621 [2022-11-22 02:12:51,410 INFO L226 Difference]: Without dead ends: 29234 [2022-11-22 02:12:51,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:12:51,485 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1136 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:51,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1124 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:12:51,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29234 states. [2022-11-22 02:12:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29234 to 24736. [2022-11-22 02:12:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24736 states, 21451 states have (on average 1.4958277003403104) internal successors, (32087), 21460 states have internal predecessors, (32087), 2388 states have call successors, (2388), 776 states have call predecessors, (2388), 896 states have return successors, (3100), 2500 states have call predecessors, (3100), 2388 states have call successors, (3100) [2022-11-22 02:12:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24736 states to 24736 states and 37575 transitions. [2022-11-22 02:12:53,519 INFO L78 Accepts]: Start accepts. Automaton has 24736 states and 37575 transitions. Word has length 81 [2022-11-22 02:12:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:53,520 INFO L495 AbstractCegarLoop]: Abstraction has 24736 states and 37575 transitions. [2022-11-22 02:12:53,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 24736 states and 37575 transitions. [2022-11-22 02:12:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:12:53,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:53,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:12:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:12:53,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1679072870, now seen corresponding path program 1 times [2022-11-22 02:12:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:53,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919008121] [2022-11-22 02:12:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:53,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:53,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919008121] [2022-11-22 02:12:53,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919008121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:53,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:53,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:12:53,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056789110] [2022-11-22 02:12:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:53,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:12:53,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:53,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:12:53,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:53,679 INFO L87 Difference]: Start difference. First operand 24736 states and 37575 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:12:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:56,709 INFO L93 Difference]: Finished difference Result 73749 states and 114008 transitions. [2022-11-22 02:12:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:12:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:12:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:56,962 INFO L225 Difference]: With dead ends: 73749 [2022-11-22 02:12:56,962 INFO L226 Difference]: Without dead ends: 49018 [2022-11-22 02:12:57,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:12:57,065 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 568 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:57,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 852 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:12:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49018 states. [2022-11-22 02:13:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49018 to 48880. [2022-11-22 02:13:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48880 states, 42443 states have (on average 1.4862050279197982) internal successors, (63079), 42464 states have internal predecessors, (63079), 4644 states have call successors, (4644), 1552 states have call predecessors, (4644), 1792 states have return successors, (6008), 4864 states have call predecessors, (6008), 4644 states have call successors, (6008) [2022-11-22 02:13:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48880 states to 48880 states and 73731 transitions. [2022-11-22 02:13:00,536 INFO L78 Accepts]: Start accepts. Automaton has 48880 states and 73731 transitions. Word has length 81 [2022-11-22 02:13:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:00,537 INFO L495 AbstractCegarLoop]: Abstraction has 48880 states and 73731 transitions. [2022-11-22 02:13:00,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:13:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 48880 states and 73731 transitions. [2022-11-22 02:13:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:13:00,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:00,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:13:00,542 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:00,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1564445337, now seen corresponding path program 1 times [2022-11-22 02:13:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:00,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755845294] [2022-11-22 02:13:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:00,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:00,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755845294] [2022-11-22 02:13:00,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755845294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:00,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:00,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:13:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43473294] [2022-11-22 02:13:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:00,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:13:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:13:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:13:00,947 INFO L87 Difference]: Start difference. First operand 48880 states and 73731 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:13:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:07,407 INFO L93 Difference]: Finished difference Result 154724 states and 233129 transitions. [2022-11-22 02:13:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:13:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-11-22 02:13:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:08,022 INFO L225 Difference]: With dead ends: 154724 [2022-11-22 02:13:08,023 INFO L226 Difference]: Without dead ends: 105850 [2022-11-22 02:13:08,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:13:08,424 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1099 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:08,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 963 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:13:08,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105850 states. [2022-11-22 02:13:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105850 to 82944. [2022-11-22 02:13:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82944 states, 72827 states have (on average 1.471693190712236) internal successors, (107179), 72868 states have internal predecessors, (107179), 7044 states have call successors, (7044), 2592 states have call predecessors, (7044), 3072 states have return successors, (9772), 7484 states have call predecessors, (9772), 7044 states have call successors, (9772) [2022-11-22 02:13:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82944 states to 82944 states and 123995 transitions. [2022-11-22 02:13:14,522 INFO L78 Accepts]: Start accepts. Automaton has 82944 states and 123995 transitions. Word has length 81 [2022-11-22 02:13:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:14,523 INFO L495 AbstractCegarLoop]: Abstraction has 82944 states and 123995 transitions. [2022-11-22 02:13:14,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:13:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 82944 states and 123995 transitions. [2022-11-22 02:13:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 02:13:14,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:14,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:14,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:13:14,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 727492203, now seen corresponding path program 1 times [2022-11-22 02:13:14,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:14,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949772715] [2022-11-22 02:13:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:14,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:13:14,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:14,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949772715] [2022-11-22 02:13:14,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949772715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:14,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:13:14,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:13:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760723821] [2022-11-22 02:13:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:14,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:13:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:14,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:13:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:13:14,849 INFO L87 Difference]: Start difference. First operand 82944 states and 123995 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:13:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:27,410 INFO L93 Difference]: Finished difference Result 314516 states and 469494 transitions. [2022-11-22 02:13:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:13:27,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2022-11-22 02:13:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted.