./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.10.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_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/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_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/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_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/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 c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- 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 02:27:27,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:27:27,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:27:27,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:27:27,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:27:27,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:27:27,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:27:27,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:27:27,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:27:27,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:27:27,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:27:27,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:27:27,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:27:27,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:27:27,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:27:27,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:27:27,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:27:27,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:27:27,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:27:27,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:27:27,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:27:27,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:27:27,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:27:27,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:27:27,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:27:27,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:27:27,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:27:27,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:27:27,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:27:27,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:27:27,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:27:27,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:27:27,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:27:27,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:27:27,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:27:27,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:27:27,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:27:27,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:27:27,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:27:27,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:27:27,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:27:27,222 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:27:27,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:27:27,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:27:27,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:27:27,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:27:27,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:27:27,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:27:27,248 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:27:27,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:27:27,249 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:27:27,249 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:27:27,249 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:27:27,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:27:27,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:27:27,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:27:27,251 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:27:27,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:27:27,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:27:27,251 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:27:27,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:27:27,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:27:27,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:27:27,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:27:27,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:27:27,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:27:27,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:27:27,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:27:27,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:27:27,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:27:27,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:27:27,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:27:27,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:27:27,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:27:27,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:27,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:27:27,256 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:27:27,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:27:27,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:27:27,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:27:27,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:27:27,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:27:27,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:27:27,258 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_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2022-11-22 02:27:27,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:27:27,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:27:27,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:27:27,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:27:27,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:27:27,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-11-22 02:27:30,659 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:27:30,933 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:27:30,934 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-11-22 02:27:30,947 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/data/b70c2bfe5/65492577cfbb4117ba8fb7b15b53d00b/FLAGab45ceb01 [2022-11-22 02:27:30,964 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/data/b70c2bfe5/65492577cfbb4117ba8fb7b15b53d00b [2022-11-22 02:27:30,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:27:30,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:27:30,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:30,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:27:30,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:27:30,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:30" (1/1) ... [2022-11-22 02:27:30,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667c6893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30, skipping insertion in model container [2022-11-22 02:27:30,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:30" (1/1) ... [2022-11-22 02:27:30,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:27:31,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:27:31,199 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_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-11-22 02:27:31,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:31,351 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:27:31,367 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_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-11-22 02:27:31,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:27:31,505 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:27:31,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31 WrapperNode [2022-11-22 02:27:31,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:27:31,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:31,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:27:31,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:27:31,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,573 INFO L138 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2022-11-22 02:27:31,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:27:31,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:27:31,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:27:31,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:27:31,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:27:31,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:27:31,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:27:31,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:27:31,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (1/1) ... [2022-11-22 02:27:31,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:27:31,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:31,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:27:31,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1336c8c-b5bd-4c5f-a137-f1c31f87cc77/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:27:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:27:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 02:27:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 02:27:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 02:27:31,750 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 02:27:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 02:27:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 02:27:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 02:27:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 02:27:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 02:27:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 02:27:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:27:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 02:27:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 02:27:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:27:31,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:27:31,931 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:27:31,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:27:32,815 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:27:33,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:27:33,378 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-22 02:27:33,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:33 BoogieIcfgContainer [2022-11-22 02:27:33,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:27:33,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:27:33,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:27:33,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:27:33,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:27:30" (1/3) ... [2022-11-22 02:27:33,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c39c5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:33, skipping insertion in model container [2022-11-22 02:27:33,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:31" (2/3) ... [2022-11-22 02:27:33,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c39c5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:33, skipping insertion in model container [2022-11-22 02:27:33,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:33" (3/3) ... [2022-11-22 02:27:33,390 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2022-11-22 02:27:33,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:27:33,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:27:33,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:27:33,530 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;@315e99eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:27:33,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:27:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 133 states have (on average 1.556390977443609) internal successors, (207), 135 states have internal predecessors, (207), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-22 02:27:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:27:33,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:33,557 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] [2022-11-22 02:27:33,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash 128064639, now seen corresponding path program 1 times [2022-11-22 02:27:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:33,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864990807] [2022-11-22 02:27:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:34,148 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 02:27:34,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:34,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864990807] [2022-11-22 02:27:34,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864990807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:34,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:34,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:27:34,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860269626] [2022-11-22 02:27:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:34,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:27:34,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:27:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:27:34,217 INFO L87 Difference]: Start difference. First operand has 164 states, 133 states have (on average 1.556390977443609) internal successors, (207), 135 states have internal predecessors, (207), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 02:27:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:34,735 INFO L93 Difference]: Finished difference Result 475 states and 757 transitions. [2022-11-22 02:27:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:27:34,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-22 02:27:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:34,749 INFO L225 Difference]: With dead ends: 475 [2022-11-22 02:27:34,749 INFO L226 Difference]: Without dead ends: 312 [2022-11-22 02:27:34,755 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 02:27:34,758 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 433 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:34,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 686 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:34,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-22 02:27:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 309. [2022-11-22 02:27:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 255 states have (on average 1.5058823529411764) internal successors, (384), 256 states have internal predecessors, (384), 41 states have call successors, (41), 12 states have call predecessors, (41), 12 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-22 02:27:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 466 transitions. [2022-11-22 02:27:34,899 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 466 transitions. Word has length 69 [2022-11-22 02:27:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:34,900 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 466 transitions. [2022-11-22 02:27:34,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 02:27:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 466 transitions. [2022-11-22 02:27:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:27:34,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:34,912 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] [2022-11-22 02:27:34,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:27:34,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash -903266176, now seen corresponding path program 1 times [2022-11-22 02:27:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:34,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545431383] [2022-11-22 02:27:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:35,154 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 02:27:35,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:35,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545431383] [2022-11-22 02:27:35,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545431383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:35,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:35,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:27:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291482228] [2022-11-22 02:27:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:27:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:27:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:27:35,159 INFO L87 Difference]: Start difference. First operand 309 states and 466 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:27:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:35,910 INFO L93 Difference]: Finished difference Result 1056 states and 1611 transitions. [2022-11-22 02:27:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:27:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-22 02:27:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:35,923 INFO L225 Difference]: With dead ends: 1056 [2022-11-22 02:27:35,923 INFO L226 Difference]: Without dead ends: 728 [2022-11-22 02:27:35,930 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 02:27:35,933 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 908 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:35,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1095 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:27:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-22 02:27:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 716. [2022-11-22 02:27:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 607 states have (on average 1.4975288303130148) internal successors, (909), 599 states have internal predecessors, (909), 80 states have call successors, (80), 26 states have call predecessors, (80), 28 states have return successors, (91), 91 states have call predecessors, (91), 80 states have call successors, (91) [2022-11-22 02:27:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1080 transitions. [2022-11-22 02:27:36,015 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1080 transitions. Word has length 69 [2022-11-22 02:27:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:36,018 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1080 transitions. [2022-11-22 02:27:36,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:27:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1080 transitions. [2022-11-22 02:27:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:27:36,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:36,022 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] [2022-11-22 02:27:36,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:27:36,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:36,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1177044671, now seen corresponding path program 1 times [2022-11-22 02:27:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:36,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441109691] [2022-11-22 02:27:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:36,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:36,283 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 02:27:36,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:36,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441109691] [2022-11-22 02:27:36,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441109691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:36,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:36,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:27:36,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141874175] [2022-11-22 02:27:36,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:36,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:27:36,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:36,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:27:36,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:27:36,286 INFO L87 Difference]: Start difference. First operand 716 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:27:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:36,961 INFO L93 Difference]: Finished difference Result 2507 states and 3833 transitions. [2022-11-22 02:27:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:27:36,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-22 02:27:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:36,971 INFO L225 Difference]: With dead ends: 2507 [2022-11-22 02:27:36,971 INFO L226 Difference]: Without dead ends: 1751 [2022-11-22 02:27:36,976 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 02:27:36,977 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:36,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:27:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-11-22 02:27:37,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1363. [2022-11-22 02:27:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1158 states have (on average 1.498272884283247) internal successors, (1735), 1151 states have internal predecessors, (1735), 148 states have call successors, (148), 50 states have call predecessors, (148), 56 states have return successors, (180), 162 states have call predecessors, (180), 148 states have call successors, (180) [2022-11-22 02:27:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2063 transitions. [2022-11-22 02:27:37,128 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2063 transitions. Word has length 69 [2022-11-22 02:27:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:37,129 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 2063 transitions. [2022-11-22 02:27:37,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:27:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2063 transitions. [2022-11-22 02:27:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:27:37,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:37,133 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] [2022-11-22 02:27:37,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:27:37,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1387585568, now seen corresponding path program 1 times [2022-11-22 02:27:37,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:37,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907044666] [2022-11-22 02:27:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:37,266 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 02:27:37,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:37,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907044666] [2022-11-22 02:27:37,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907044666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:37,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:37,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:27:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492877173] [2022-11-22 02:27:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:37,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:27:37,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:27:37,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:27:37,269 INFO L87 Difference]: Start difference. First operand 1363 states and 2063 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 02:27:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:37,767 INFO L93 Difference]: Finished difference Result 4050 states and 6235 transitions. [2022-11-22 02:27:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:27:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-22 02:27:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:37,811 INFO L225 Difference]: With dead ends: 4050 [2022-11-22 02:27:37,811 INFO L226 Difference]: Without dead ends: 2692 [2022-11-22 02:27:37,818 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 02:27:37,826 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 448 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:37,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 684 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:27:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-11-22 02:27:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2680. [2022-11-22 02:27:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2283 states have (on average 1.4883924660534384) internal successors, (3398), 2269 states have internal predecessors, (3398), 284 states have call successors, (284), 100 states have call predecessors, (284), 112 states have return successors, (345), 311 states have call predecessors, (345), 284 states have call successors, (345) [2022-11-22 02:27:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4027 transitions. [2022-11-22 02:27:38,052 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4027 transitions. Word has length 69 [2022-11-22 02:27:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:38,052 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 4027 transitions. [2022-11-22 02:27:38,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 02:27:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4027 transitions. [2022-11-22 02:27:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:27:38,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:38,054 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] [2022-11-22 02:27:38,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:27:38,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash 112482879, now seen corresponding path program 1 times [2022-11-22 02:27:38,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:38,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508348779] [2022-11-22 02:27:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:38,173 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 02:27:38,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:38,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508348779] [2022-11-22 02:27:38,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508348779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:38,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:38,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:27:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796632424] [2022-11-22 02:27:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:38,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:27:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:27:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:27:38,181 INFO L87 Difference]: Start difference. First operand 2680 states and 4027 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 02:27:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:38,932 INFO L93 Difference]: Finished difference Result 7973 states and 12179 transitions. [2022-11-22 02:27:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:27:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-22 02:27:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:38,969 INFO L225 Difference]: With dead ends: 7973 [2022-11-22 02:27:38,969 INFO L226 Difference]: Without dead ends: 5298 [2022-11-22 02:27:38,981 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 02:27:38,984 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 454 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:38,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 684 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:27:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2022-11-22 02:27:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 5276. [2022-11-22 02:27:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 4503 states have (on average 1.4779036198090163) internal successors, (6655), 4476 states have internal predecessors, (6655), 548 states have call successors, (548), 200 states have call predecessors, (548), 224 states have return successors, (664), 600 states have call predecessors, (664), 548 states have call successors, (664) [2022-11-22 02:27:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7867 transitions. [2022-11-22 02:27:39,390 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7867 transitions. Word has length 69 [2022-11-22 02:27:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:39,390 INFO L495 AbstractCegarLoop]: Abstraction has 5276 states and 7867 transitions. [2022-11-22 02:27:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 02:27:39,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7867 transitions. [2022-11-22 02:27:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:27:39,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:39,392 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] [2022-11-22 02:27:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:27:39,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash 635803550, now seen corresponding path program 1 times [2022-11-22 02:27:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:39,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102475570] [2022-11-22 02:27:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:39,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:39,527 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 02:27:39,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:39,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102475570] [2022-11-22 02:27:39,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102475570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:39,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:39,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:27:39,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241044373] [2022-11-22 02:27:39,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:39,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:27:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:27:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:27:39,530 INFO L87 Difference]: Start difference. First operand 5276 states and 7867 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:27:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:40,762 INFO L93 Difference]: Finished difference Result 17809 states and 27018 transitions. [2022-11-22 02:27:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:27:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-22 02:27:40,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:40,833 INFO L225 Difference]: With dead ends: 17809 [2022-11-22 02:27:40,834 INFO L226 Difference]: Without dead ends: 12210 [2022-11-22 02:27:40,859 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 02:27:40,860 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:40,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:27:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12210 states. [2022-11-22 02:27:41,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12210 to 10144. [2022-11-22 02:27:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10144 states, 8651 states have (on average 1.4753207721650676) internal successors, (12763), 8640 states have internal predecessors, (12763), 1044 states have call successors, (1044), 392 states have call predecessors, (1044), 448 states have return successors, (1304), 1112 states have call predecessors, (1304), 1044 states have call successors, (1304) [2022-11-22 02:27:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10144 states to 10144 states and 15111 transitions. [2022-11-22 02:27:41,660 INFO L78 Accepts]: Start accepts. Automaton has 10144 states and 15111 transitions. Word has length 69 [2022-11-22 02:27:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:41,661 INFO L495 AbstractCegarLoop]: Abstraction has 10144 states and 15111 transitions. [2022-11-22 02:27:41,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 02:27:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 10144 states and 15111 transitions. [2022-11-22 02:27:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:27:41,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:41,670 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] [2022-11-22 02:27:41,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:27:41,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1554778173, now seen corresponding path program 1 times [2022-11-22 02:27:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:41,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480868412] [2022-11-22 02:27:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:41,965 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 02:27:41,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:41,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480868412] [2022-11-22 02:27:41,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480868412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:41,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:41,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:27:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258248643] [2022-11-22 02:27:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:41,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:27:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:27:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:27:41,968 INFO L87 Difference]: Start difference. First operand 10144 states and 15111 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 02:27:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:43,855 INFO L93 Difference]: Finished difference Result 31616 states and 47145 transitions. [2022-11-22 02:27:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:27:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 69 [2022-11-22 02:27:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:43,982 INFO L225 Difference]: With dead ends: 31616 [2022-11-22 02:27:43,982 INFO L226 Difference]: Without dead ends: 21478 [2022-11-22 02:27:44,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:27:44,011 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 931 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:44,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 611 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:44,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21478 states. [2022-11-22 02:27:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21478 to 17148. [2022-11-22 02:27:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17148 states, 14791 states have (on average 1.4616320735582449) internal successors, (21619), 14768 states have internal predecessors, (21619), 1588 states have call successors, (1588), 656 states have call predecessors, (1588), 768 states have return successors, (2108), 1724 states have call predecessors, (2108), 1588 states have call successors, (2108) [2022-11-22 02:27:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17148 states to 17148 states and 25315 transitions. [2022-11-22 02:27:45,466 INFO L78 Accepts]: Start accepts. Automaton has 17148 states and 25315 transitions. Word has length 69 [2022-11-22 02:27:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:45,466 INFO L495 AbstractCegarLoop]: Abstraction has 17148 states and 25315 transitions. [2022-11-22 02:27:45,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 02:27:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 17148 states and 25315 transitions. [2022-11-22 02:27:45,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-22 02:27:45,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:45,469 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] [2022-11-22 02:27:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:27:45,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1973817297, now seen corresponding path program 1 times [2022-11-22 02:27:45,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:45,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156410089] [2022-11-22 02:27:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:45,754 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 02:27:45,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156410089] [2022-11-22 02:27:45,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156410089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:45,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:45,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:27:45,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957858288] [2022-11-22 02:27:45,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:45,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:27:45,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:45,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:27:45,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:27:45,757 INFO L87 Difference]: Start difference. First operand 17148 states and 25315 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 02:27:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:48,949 INFO L93 Difference]: Finished difference Result 63632 states and 94046 transitions. [2022-11-22 02:27:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:27:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 70 [2022-11-22 02:27:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:49,205 INFO L225 Difference]: With dead ends: 63632 [2022-11-22 02:27:49,206 INFO L226 Difference]: Without dead ends: 46490 [2022-11-22 02:27:49,274 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 02:27:49,275 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 912 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:49,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 682 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:27:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46490 states. [2022-11-22 02:27:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46490 to 33672. [2022-11-22 02:27:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33672 states, 29059 states have (on average 1.4559000653842182) internal successors, (42307), 29020 states have internal predecessors, (42307), 3076 states have call successors, (3076), 1312 states have call predecessors, (3076), 1536 states have return successors, (4060), 3340 states have call predecessors, (4060), 3076 states have call successors, (4060) [2022-11-22 02:27:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33672 states to 33672 states and 49443 transitions. [2022-11-22 02:27:53,081 INFO L78 Accepts]: Start accepts. Automaton has 33672 states and 49443 transitions. Word has length 70 [2022-11-22 02:27:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:53,082 INFO L495 AbstractCegarLoop]: Abstraction has 33672 states and 49443 transitions. [2022-11-22 02:27:53,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 02:27:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 33672 states and 49443 transitions. [2022-11-22 02:27:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 02:27:53,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:53,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:53,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:27:53,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:27:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash 996325652, now seen corresponding path program 1 times [2022-11-22 02:27:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:53,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639635601] [2022-11-22 02:27:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:53,348 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 02:27:53,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639635601] [2022-11-22 02:27:53,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639635601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:53,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:53,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:27:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609729223] [2022-11-22 02:27:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:53,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:27:53,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:27:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:27:53,352 INFO L87 Difference]: Start difference. First operand 33672 states and 49443 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 02:27:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:57,715 INFO L93 Difference]: Finished difference Result 96636 states and 142253 transitions. [2022-11-22 02:27:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:27:57,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 71 [2022-11-22 02:27:57,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:57,956 INFO L225 Difference]: With dead ends: 96636 [2022-11-22 02:27:57,957 INFO L226 Difference]: Without dead ends: 62970 [2022-11-22 02:27:58,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:27:58,038 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 837 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:58,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 640 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62970 states. [2022-11-22 02:28:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62970 to 50072. [2022-11-22 02:28:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50072 states, 43171 states have (on average 1.4510435245882654) internal successors, (62643), 43044 states have internal predecessors, (62643), 4596 states have call successors, (4596), 1984 states have call predecessors, (4596), 2304 states have return successors, (5972), 5044 states have call predecessors, (5972), 4596 states have call successors, (5972) [2022-11-22 02:28:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50072 states to 50072 states and 73211 transitions. [2022-11-22 02:28:02,238 INFO L78 Accepts]: Start accepts. Automaton has 50072 states and 73211 transitions. Word has length 71 [2022-11-22 02:28:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:02,239 INFO L495 AbstractCegarLoop]: Abstraction has 50072 states and 73211 transitions. [2022-11-22 02:28:02,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 02:28:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 50072 states and 73211 transitions. [2022-11-22 02:28:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 02:28:02,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:02,241 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] [2022-11-22 02:28:02,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:28:02,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash -447451731, now seen corresponding path program 1 times [2022-11-22 02:28:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:02,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514233182] [2022-11-22 02:28:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:02,495 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 02:28:02,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:02,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514233182] [2022-11-22 02:28:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514233182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:02,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:02,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:28:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108166963] [2022-11-22 02:28:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:02,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:28:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:02,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:28:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:02,498 INFO L87 Difference]: Start difference. First operand 50072 states and 73211 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 02:28:09,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:09,413 INFO L93 Difference]: Finished difference Result 141300 states and 207293 transitions. [2022-11-22 02:28:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:28:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 72 [2022-11-22 02:28:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:09,827 INFO L225 Difference]: With dead ends: 141300 [2022-11-22 02:28:09,827 INFO L226 Difference]: Without dead ends: 91234 [2022-11-22 02:28:10,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:28:10,134 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 772 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:10,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 773 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:28:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91234 states. [2022-11-22 02:28:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91234 to 74624. [2022-11-22 02:28:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74624 states, 64283 states have (on average 1.4461521708694367) internal successors, (92963), 63980 states have internal predecessors, (92963), 6884 states have call successors, (6884), 3008 states have call predecessors, (6884), 3456 states have return successors, (8772), 7636 states have call predecessors, (8772), 6884 states have call successors, (8772) [2022-11-22 02:28:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74624 states to 74624 states and 108619 transitions. [2022-11-22 02:28:16,423 INFO L78 Accepts]: Start accepts. Automaton has 74624 states and 108619 transitions. Word has length 72 [2022-11-22 02:28:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:16,423 INFO L495 AbstractCegarLoop]: Abstraction has 74624 states and 108619 transitions. [2022-11-22 02:28:16,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 02:28:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 74624 states and 108619 transitions. [2022-11-22 02:28:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 02:28:16,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:16,431 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] [2022-11-22 02:28:16,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:28:16,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1862629176, now seen corresponding path program 1 times [2022-11-22 02:28:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:16,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129363245] [2022-11-22 02:28:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:16,705 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 02:28:16,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:16,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129363245] [2022-11-22 02:28:16,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129363245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:16,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:16,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:28:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781032908] [2022-11-22 02:28:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:16,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:28:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:28:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:28:16,707 INFO L87 Difference]: Start difference. First operand 74624 states and 108619 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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)