./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-2329fc7 [2022-12-14 10:59:00,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:59:00,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:59:00,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:59:00,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:59:00,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:59:00,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:59:00,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:59:00,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:59:00,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:59:00,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:59:00,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:59:00,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:59:00,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:59:00,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:59:00,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:59:00,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:59:00,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:59:00,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:59:00,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:59:00,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:59:00,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:59:00,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:59:00,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:59:00,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:59:00,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:59:00,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:59:00,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:59:00,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:59:00,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:59:00,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:59:00,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:59:00,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:59:00,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:59:00,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:59:00,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:59:00,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:59:00,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:59:00,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:59:00,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:59:00,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:59:00,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:59:00,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:59:00,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:59:00,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:59:00,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:59:00,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:59:00,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:59:00,398 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:59:00,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:59:00,399 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:59:00,399 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:59:00,399 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:59:00,399 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:59:00,399 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:59:00,400 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:59:00,400 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:59:00,400 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:59:00,400 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:59:00,400 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:59:00,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:59:00,401 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:59:00,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:59:00,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:59:00,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:59:00,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:59:00,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:59:00,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:59:00,402 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:59:00,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:59:00,402 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:59:00,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:59:00,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:59:00,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:59:00,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:59:00,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:59:00,407 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:59:00,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:59:00,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:59:00,408 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:59:00,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:59:00,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:59:00,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:59:00,409 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_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2022-12-14 10:59:00,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:59:00,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:59:00,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:59:00,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:59:00,629 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:59:00,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-12-14 10:59:03,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:59:03,369 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:59:03,370 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-12-14 10:59:03,381 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/data/2c4d3fdac/0b1c1f8efb8a4c29b3701774aee1022d/FLAG02da4a82d [2022-12-14 10:59:03,752 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/data/2c4d3fdac/0b1c1f8efb8a4c29b3701774aee1022d [2022-12-14 10:59:03,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:59:03,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:59:03,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:59:03,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:59:03,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:59:03,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:59:03" (1/1) ... [2022-12-14 10:59:03,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3167f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:03, skipping insertion in model container [2022-12-14 10:59:03,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:59:03" (1/1) ... [2022-12-14 10:59:03,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:59:03,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:59:03,942 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_f3899e35-4cd9-465e-b3cd-0a64466217da/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-12-14 10:59:04,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:59:04,053 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:59:04,064 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_f3899e35-4cd9-465e-b3cd-0a64466217da/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-12-14 10:59:04,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:59:04,139 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:59:04,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04 WrapperNode [2022-12-14 10:59:04,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:59:04,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:59:04,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:59:04,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:59:04,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,198 INFO L138 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2022-12-14 10:59:04,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:59:04,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:59:04,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:59:04,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:59:04,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:59:04,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:59:04,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:59:04,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:59:04,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (1/1) ... [2022-12-14 10:59:04,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:59:04,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:59:04,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:59:04,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3899e35-4cd9-465e-b3cd-0a64466217da/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:59:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:59:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 10:59:04,325 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 10:59:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 10:59:04,325 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 10:59:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 10:59:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 10:59:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 10:59:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 10:59:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 10:59:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 10:59:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:59:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 10:59:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 10:59:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:59:04,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:59:04,413 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:59:04,415 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:59:04,889 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:59:05,157 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:59:05,157 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-12-14 10:59:05,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:05 BoogieIcfgContainer [2022-12-14 10:59:05,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:59:05,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:59:05,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:59:05,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:59:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:59:03" (1/3) ... [2022-12-14 10:59:05,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c393f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:59:05, skipping insertion in model container [2022-12-14 10:59:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:04" (2/3) ... [2022-12-14 10:59:05,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c393f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:59:05, skipping insertion in model container [2022-12-14 10:59:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:05" (3/3) ... [2022-12-14 10:59:05,169 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2022-12-14 10:59:05,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:59:05,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:59:05,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:59:05,232 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;@137dd172, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:59:05,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:59:05,236 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) [2022-12-14 10:59:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:59:05,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:05,247 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] [2022-12-14 10:59:05,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1259658590, now seen corresponding path program 1 times [2022-12-14 10:59:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:05,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878855775] [2022-12-14 10:59:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:05,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:05,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878855775] [2022-12-14 10:59:05,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878855775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:05,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:05,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:59:05,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954339712] [2022-12-14 10:59:05,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:05,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:59:05,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:59:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:59:05,641 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) [2022-12-14 10:59:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:05,982 INFO L93 Difference]: Finished difference Result 475 states and 757 transitions. [2022-12-14 10:59:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:59:05,984 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 [2022-12-14 10:59:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:05,995 INFO L225 Difference]: With dead ends: 475 [2022-12-14 10:59:05,995 INFO L226 Difference]: Without dead ends: 312 [2022-12-14 10:59:06,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:59:06,003 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 433 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:06,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 686 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:59:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-12-14 10:59:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 309. [2022-12-14 10:59:06,061 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) [2022-12-14 10:59:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 466 transitions. [2022-12-14 10:59:06,065 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 466 transitions. Word has length 69 [2022-12-14 10:59:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:06,066 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 466 transitions. [2022-12-14 10:59:06,066 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) [2022-12-14 10:59:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 466 transitions. [2022-12-14 10:59:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:59:06,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:06,069 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] [2022-12-14 10:59:06,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:59:06,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2003977891, now seen corresponding path program 1 times [2022-12-14 10:59:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:06,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000349246] [2022-12-14 10:59:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:06,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:06,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:06,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000349246] [2022-12-14 10:59:06,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000349246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:06,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:06,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:59:06,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347650947] [2022-12-14 10:59:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:06,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:59:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:59:06,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:59:06,196 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) [2022-12-14 10:59:06,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:06,715 INFO L93 Difference]: Finished difference Result 1056 states and 1611 transitions. [2022-12-14 10:59:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:59:06,716 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 [2022-12-14 10:59:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:06,722 INFO L225 Difference]: With dead ends: 1056 [2022-12-14 10:59:06,722 INFO L226 Difference]: Without dead ends: 728 [2022-12-14 10:59:06,724 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 [2022-12-14 10:59:06,725 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 908 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:06,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1095 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:59:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-12-14 10:59:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 716. [2022-12-14 10:59:06,785 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) [2022-12-14 10:59:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1080 transitions. [2022-12-14 10:59:06,791 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1080 transitions. Word has length 69 [2022-12-14 10:59:06,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:06,792 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1080 transitions. [2022-12-14 10:59:06,792 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) [2022-12-14 10:59:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1080 transitions. [2022-12-14 10:59:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:59:06,795 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:06,795 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] [2022-12-14 10:59:06,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:59:06,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1730199396, now seen corresponding path program 1 times [2022-12-14 10:59:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:06,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801665934] [2022-12-14 10:59:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:06,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:06,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:06,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801665934] [2022-12-14 10:59:06,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801665934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:06,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:06,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:59:06,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208392523] [2022-12-14 10:59:06,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:06,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:59:06,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:06,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:59:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:59:06,919 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) [2022-12-14 10:59:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:07,397 INFO L93 Difference]: Finished difference Result 2507 states and 3833 transitions. [2022-12-14 10:59:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:59:07,397 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 [2022-12-14 10:59:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:07,403 INFO L225 Difference]: With dead ends: 2507 [2022-12-14 10:59:07,403 INFO L226 Difference]: Without dead ends: 1751 [2022-12-14 10:59:07,406 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 [2022-12-14 10:59:07,406 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:07,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:59:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-12-14 10:59:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1363. [2022-12-14 10:59:07,471 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) [2022-12-14 10:59:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2063 transitions. [2022-12-14 10:59:07,477 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2063 transitions. Word has length 69 [2022-12-14 10:59:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:07,477 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 2063 transitions. [2022-12-14 10:59:07,477 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) [2022-12-14 10:59:07,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2063 transitions. [2022-12-14 10:59:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:59:07,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:07,478 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] [2022-12-14 10:59:07,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:59:07,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash -137661, now seen corresponding path program 1 times [2022-12-14 10:59:07,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:07,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428412428] [2022-12-14 10:59:07,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:07,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:07,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:07,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428412428] [2022-12-14 10:59:07,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428412428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:07,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:07,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:59:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746025022] [2022-12-14 10:59:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:07,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:59:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:59:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:59:07,564 INFO L87 Difference]: Start difference. First operand 1363 states and 2063 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) [2022-12-14 10:59:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:08,099 INFO L93 Difference]: Finished difference Result 4706 states and 7242 transitions. [2022-12-14 10:59:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:59:08,100 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 [2022-12-14 10:59:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:08,127 INFO L225 Difference]: With dead ends: 4706 [2022-12-14 10:59:08,127 INFO L226 Difference]: Without dead ends: 3262 [2022-12-14 10:59:08,135 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 [2022-12-14 10:59:08,136 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:08,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:59:08,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2022-12-14 10:59:08,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2631. [2022-12-14 10:59:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2238 states have (on average 1.497319034852547) internal successors, (3351), 2235 states have internal predecessors, (3351), 280 states have call successors, (280), 98 states have call predecessors, (280), 112 states have return successors, (352), 298 states have call predecessors, (352), 280 states have call successors, (352) [2022-12-14 10:59:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3983 transitions. [2022-12-14 10:59:08,274 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3983 transitions. Word has length 69 [2022-12-14 10:59:08,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:08,274 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 3983 transitions. [2022-12-14 10:59:08,274 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) [2022-12-14 10:59:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3983 transitions. [2022-12-14 10:59:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:59:08,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:08,275 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] [2022-12-14 10:59:08,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:59:08,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1275240350, now seen corresponding path program 1 times [2022-12-14 10:59:08,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:08,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217377600] [2022-12-14 10:59:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:08,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:08,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:08,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217377600] [2022-12-14 10:59:08,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217377600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:08,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:08,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:59:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863924538] [2022-12-14 10:59:08,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:08,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:59:08,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:08,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:59:08,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:59:08,332 INFO L87 Difference]: Start difference. First operand 2631 states and 3983 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) [2022-12-14 10:59:08,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:08,725 INFO L93 Difference]: Finished difference Result 7826 states and 12055 transitions. [2022-12-14 10:59:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:59:08,726 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 [2022-12-14 10:59:08,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:08,742 INFO L225 Difference]: With dead ends: 7826 [2022-12-14 10:59:08,742 INFO L226 Difference]: Without dead ends: 5200 [2022-12-14 10:59:08,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:59:08,751 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, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:08,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 684 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:59:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2022-12-14 10:59:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 5180. [2022-12-14 10:59:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 4415 states have (on average 1.4862967157417895) internal successors, (6562), 4409 states have internal predecessors, (6562), 540 states have call successors, (540), 196 states have call predecessors, (540), 224 states have return successors, (677), 575 states have call predecessors, (677), 540 states have call successors, (677) [2022-12-14 10:59:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 7779 transitions. [2022-12-14 10:59:08,972 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 7779 transitions. Word has length 69 [2022-12-14 10:59:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:08,972 INFO L495 AbstractCegarLoop]: Abstraction has 5180 states and 7779 transitions. [2022-12-14 10:59:08,972 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) [2022-12-14 10:59:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 7779 transitions. [2022-12-14 10:59:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:59:08,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:08,974 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] [2022-12-14 10:59:08,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:59:08,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:08,975 INFO L85 PathProgramCache]: Analyzing trace with hash -751919679, now seen corresponding path program 1 times [2022-12-14 10:59:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:08,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528797581] [2022-12-14 10:59:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:08,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:09,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528797581] [2022-12-14 10:59:09,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528797581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:09,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:09,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:59:09,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828706909] [2022-12-14 10:59:09,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:59:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:59:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:59:09,087 INFO L87 Difference]: Start difference. First operand 5180 states and 7779 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) [2022-12-14 10:59:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:09,883 INFO L93 Difference]: Finished difference Result 17386 states and 26600 transitions. [2022-12-14 10:59:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:59:09,884 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 [2022-12-14 10:59:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:09,922 INFO L225 Difference]: With dead ends: 17386 [2022-12-14 10:59:09,922 INFO L226 Difference]: Without dead ends: 11887 [2022-12-14 10:59:09,937 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 [2022-12-14 10:59:09,938 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:09,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:59:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2022-12-14 10:59:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 10085. [2022-12-14 10:59:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10085 states, 8600 states have (on average 1.483372093023256) internal successors, (12757), 8610 states have internal predecessors, (12757), 1036 states have call successors, (1036), 388 states have call predecessors, (1036), 448 states have return successors, (1317), 1087 states have call predecessors, (1317), 1036 states have call successors, (1317) [2022-12-14 10:59:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10085 states to 10085 states and 15110 transitions. [2022-12-14 10:59:10,404 INFO L78 Accepts]: Start accepts. Automaton has 10085 states and 15110 transitions. Word has length 69 [2022-12-14 10:59:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:10,405 INFO L495 AbstractCegarLoop]: Abstraction has 10085 states and 15110 transitions. [2022-12-14 10:59:10,405 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) [2022-12-14 10:59:10,405 INFO L276 IsEmpty]: Start isEmpty. Operand 10085 states and 15110 transitions. [2022-12-14 10:59:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 10:59:10,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:10,406 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] [2022-12-14 10:59:10,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:59:10,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:10,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash 167054944, now seen corresponding path program 1 times [2022-12-14 10:59:10,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:10,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516642792] [2022-12-14 10:59:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:10,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516642792] [2022-12-14 10:59:10,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516642792] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:10,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:10,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:59:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202565734] [2022-12-14 10:59:10,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:10,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:59:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:59:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:59:10,573 INFO L87 Difference]: Start difference. First operand 10085 states and 15110 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) [2022-12-14 10:59:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:11,708 INFO L93 Difference]: Finished difference Result 31629 states and 47485 transitions. [2022-12-14 10:59:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:59:11,709 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 [2022-12-14 10:59:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:11,774 INFO L225 Difference]: With dead ends: 31629 [2022-12-14 10:59:11,774 INFO L226 Difference]: Without dead ends: 21550 [2022-12-14 10:59:11,795 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 [2022-12-14 10:59:11,795 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 872 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:11,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 768 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:59:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21550 states. [2022-12-14 10:59:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21550 to 17036. [2022-12-14 10:59:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17036 states, 14695 states have (on average 1.4698196665532495) internal successors, (21599), 14714 states have internal predecessors, (21599), 1572 states have call successors, (1572), 648 states have call predecessors, (1572), 768 states have return successors, (2134), 1674 states have call predecessors, (2134), 1572 states have call successors, (2134) [2022-12-14 10:59:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17036 states to 17036 states and 25305 transitions. [2022-12-14 10:59:12,646 INFO L78 Accepts]: Start accepts. Automaton has 17036 states and 25305 transitions. Word has length 69 [2022-12-14 10:59:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:12,646 INFO L495 AbstractCegarLoop]: Abstraction has 17036 states and 25305 transitions. [2022-12-14 10:59:12,646 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) [2022-12-14 10:59:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 17036 states and 25305 transitions. [2022-12-14 10:59:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 10:59:12,647 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:12,647 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] [2022-12-14 10:59:12,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:59:12,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1904048768, now seen corresponding path program 1 times [2022-12-14 10:59:12,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:12,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060067286] [2022-12-14 10:59:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:12,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:12,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:12,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060067286] [2022-12-14 10:59:12,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060067286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:12,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:12,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:59:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417414613] [2022-12-14 10:59:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:59:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:12,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:59:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:59:12,802 INFO L87 Difference]: Start difference. First operand 17036 states and 25305 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) [2022-12-14 10:59:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:14,859 INFO L93 Difference]: Finished difference Result 63684 states and 94746 transitions. [2022-12-14 10:59:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:59:14,859 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 [2022-12-14 10:59:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:14,971 INFO L225 Difference]: With dead ends: 63684 [2022-12-14 10:59:14,972 INFO L226 Difference]: Without dead ends: 46654 [2022-12-14 10:59:15,028 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 [2022-12-14 10:59:15,029 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 964 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:15,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 581 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:59:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46654 states. [2022-12-14 10:59:16,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46654 to 33468. [2022-12-14 10:59:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33468 states, 28887 states have (on average 1.4642918960085851) internal successors, (42299), 28928 states have internal predecessors, (42299), 3044 states have call successors, (3044), 1296 states have call predecessors, (3044), 1536 states have return successors, (4108), 3244 states have call predecessors, (4108), 3044 states have call successors, (4108) [2022-12-14 10:59:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33468 states to 33468 states and 49451 transitions. [2022-12-14 10:59:17,038 INFO L78 Accepts]: Start accepts. Automaton has 33468 states and 49451 transitions. Word has length 70 [2022-12-14 10:59:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:17,039 INFO L495 AbstractCegarLoop]: Abstraction has 33468 states and 49451 transitions. [2022-12-14 10:59:17,039 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) [2022-12-14 10:59:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 33468 states and 49451 transitions. [2022-12-14 10:59:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 10:59:17,041 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:17,042 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] [2022-12-14 10:59:17,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:59:17,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:17,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1166520137, now seen corresponding path program 1 times [2022-12-14 10:59:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:17,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788169859] [2022-12-14 10:59:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:17,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:17,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788169859] [2022-12-14 10:59:17,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788169859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:17,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:17,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:59:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151517880] [2022-12-14 10:59:17,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:17,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:59:17,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:59:17,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:59:17,249 INFO L87 Difference]: Start difference. First operand 33468 states and 49451 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) [2022-12-14 10:59:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:21,072 INFO L93 Difference]: Finished difference Result 96736 states and 143397 transitions. [2022-12-14 10:59:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:59:21,073 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 [2022-12-14 10:59:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:21,319 INFO L225 Difference]: With dead ends: 96736 [2022-12-14 10:59:21,319 INFO L226 Difference]: Without dead ends: 63274 [2022-12-14 10:59:21,390 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 [2022-12-14 10:59:21,391 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 787 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:21,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 788 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:59:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63274 states. [2022-12-14 10:59:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63274 to 49672. [2022-12-14 10:59:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49672 states, 42835 states have (on average 1.4594373759775885) internal successors, (62515), 42860 states have internal predecessors, (62515), 4532 states have call successors, (4532), 1952 states have call predecessors, (4532), 2304 states have return successors, (6060), 4860 states have call predecessors, (6060), 4532 states have call successors, (6060) [2022-12-14 10:59:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49672 states to 49672 states and 73107 transitions. [2022-12-14 10:59:23,776 INFO L78 Accepts]: Start accepts. Automaton has 49672 states and 73107 transitions. Word has length 71 [2022-12-14 10:59:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:23,776 INFO L495 AbstractCegarLoop]: Abstraction has 49672 states and 73107 transitions. [2022-12-14 10:59:23,776 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) [2022-12-14 10:59:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 49672 states and 73107 transitions. [2022-12-14 10:59:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 10:59:23,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:23,778 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] [2022-12-14 10:59:23,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:59:23,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1223784156, now seen corresponding path program 1 times [2022-12-14 10:59:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:23,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388314536] [2022-12-14 10:59:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:23,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:23,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388314536] [2022-12-14 10:59:23,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388314536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:23,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:23,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:59:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674351601] [2022-12-14 10:59:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:23,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:59:23,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:59:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:59:23,905 INFO L87 Difference]: Start difference. First operand 49672 states and 73107 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) [2022-12-14 10:59:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:29,719 INFO L93 Difference]: Finished difference Result 141508 states and 209141 transitions. [2022-12-14 10:59:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:59:29,719 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 [2022-12-14 10:59:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:29,976 INFO L225 Difference]: With dead ends: 141508 [2022-12-14 10:59:29,976 INFO L226 Difference]: Without dead ends: 91842 [2022-12-14 10:59:30,073 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 [2022-12-14 10:59:30,074 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 770 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 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, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:30,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 773 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:59:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91842 states. [2022-12-14 10:59:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91842 to 73872. [2022-12-14 10:59:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73872 states, 63659 states have (on average 1.4544212130256522) internal successors, (92587), 63628 states have internal predecessors, (92587), 6756 states have call successors, (6756), 2944 states have call predecessors, (6756), 3456 states have return successors, (8932), 7300 states have call predecessors, (8932), 6756 states have call successors, (8932) [2022-12-14 10:59:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73872 states to 73872 states and 108275 transitions. [2022-12-14 10:59:34,067 INFO L78 Accepts]: Start accepts. Automaton has 73872 states and 108275 transitions. Word has length 72 [2022-12-14 10:59:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:34,067 INFO L495 AbstractCegarLoop]: Abstraction has 73872 states and 108275 transitions. [2022-12-14 10:59:34,067 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) [2022-12-14 10:59:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 73872 states and 108275 transitions. [2022-12-14 10:59:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 10:59:34,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:34,069 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] [2022-12-14 10:59:34,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:59:34,069 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:34,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2131312731, now seen corresponding path program 1 times [2022-12-14 10:59:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:34,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359866403] [2022-12-14 10:59:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:34,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:34,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:34,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359866403] [2022-12-14 10:59:34,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359866403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:34,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:34,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:59:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863690791] [2022-12-14 10:59:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:34,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:59:34,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:59:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:59:34,207 INFO L87 Difference]: Start difference. First operand 73872 states and 108275 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) [2022-12-14 10:59:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:59:45,214 INFO L93 Difference]: Finished difference Result 260420 states and 383430 transitions. [2022-12-14 10:59:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:59:45,215 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 73 [2022-12-14 10:59:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:59:45,735 INFO L225 Difference]: With dead ends: 260420 [2022-12-14 10:59:45,735 INFO L226 Difference]: Without dead ends: 186554 [2022-12-14 10:59:45,879 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 [2022-12-14 10:59:45,879 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 856 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:59:45,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 564 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:59:46,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186554 states. [2022-12-14 10:59:54,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186554 to 144984. [2022-12-14 10:59:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144984 states, 124995 states have (on average 1.4482739309572383) internal successors, (181027), 124964 states have internal predecessors, (181027), 13076 states have call successors, (13076), 5888 states have call predecessors, (13076), 6912 states have return successors, (17172), 14132 states have call predecessors, (17172), 13076 states have call successors, (17172) [2022-12-14 10:59:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144984 states to 144984 states and 211275 transitions. [2022-12-14 10:59:55,129 INFO L78 Accepts]: Start accepts. Automaton has 144984 states and 211275 transitions. Word has length 73 [2022-12-14 10:59:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:59:55,129 INFO L495 AbstractCegarLoop]: Abstraction has 144984 states and 211275 transitions. [2022-12-14 10:59:55,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-12-14 10:59:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 144984 states and 211275 transitions. [2022-12-14 10:59:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:59:55,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:59:55,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:59:55,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:59:55,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:59:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:59:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash -359986376, now seen corresponding path program 1 times [2022-12-14 10:59:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:59:55,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582796601] [2022-12-14 10:59:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:59:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:59:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:59:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:59:55,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:59:55,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582796601] [2022-12-14 10:59:55,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582796601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:59:55,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:59:55,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:59:55,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192224425] [2022-12-14 10:59:55,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:59:55,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:59:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:59:55,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:59:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:59:55,266 INFO L87 Difference]: Start difference. First operand 144984 states and 211275 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2022-12-14 11:00:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:12,310 INFO L93 Difference]: Finished difference Result 401212 states and 587509 transitions. [2022-12-14 11:00:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:00:12,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 74 [2022-12-14 11:00:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:13,018 INFO L225 Difference]: With dead ends: 401212 [2022-12-14 11:00:13,018 INFO L226 Difference]: Without dead ends: 256234 [2022-12-14 11:00:13,249 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 [2022-12-14 11:00:13,250 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 766 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:13,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 610 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:00:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256234 states. [2022-12-14 11:00:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256234 to 216344. [2022-12-14 11:00:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216344 states, 186451 states have (on average 1.4430118368901212) internal successors, (269051), 186180 states have internal predecessors, (269051), 19524 states have call successors, (19524), 8896 states have call predecessors, (19524), 10368 states have return successors, (25284), 21268 states have call predecessors, (25284), 19524 states have call successors, (25284) [2022-12-14 11:00:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216344 states to 216344 states and 313859 transitions. [2022-12-14 11:00:27,698 INFO L78 Accepts]: Start accepts. Automaton has 216344 states and 313859 transitions. Word has length 74 [2022-12-14 11:00:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:00:27,699 INFO L495 AbstractCegarLoop]: Abstraction has 216344 states and 313859 transitions. [2022-12-14 11:00:27,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2022-12-14 11:00:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 216344 states and 313859 transitions. [2022-12-14 11:00:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 11:00:27,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:00:27,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:00:27,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 11:00:27,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:00:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:00:27,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1225111551, now seen corresponding path program 1 times [2022-12-14 11:00:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:00:27,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138600607] [2022-12-14 11:00:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:27,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:00:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:00:27,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:00:27,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138600607] [2022-12-14 11:00:27,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138600607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:00:27,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:00:27,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:00:27,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63650029] [2022-12-14 11:00:27,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:00:27,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:00:27,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:00:27,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:00:27,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:00:27,827 INFO L87 Difference]: Start difference. First operand 216344 states and 313859 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-12-14 11:01:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:01:01,971 INFO L93 Difference]: Finished difference Result 727612 states and 1060982 transitions. [2022-12-14 11:01:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:01:01,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 75 [2022-12-14 11:01:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:01:03,701 INFO L225 Difference]: With dead ends: 727612 [2022-12-14 11:01:03,701 INFO L226 Difference]: Without dead ends: 511274 [2022-12-14 11:01:04,138 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 [2022-12-14 11:01:04,138 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 793 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:01:04,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 546 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:01:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511274 states. [2022-12-14 11:01:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511274 to 424264. [2022-12-14 11:01:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424264 states, 365779 states have (on average 1.436416524732147) internal successors, (525411), 365364 states have internal predecessors, (525411), 37748 states have call successors, (37748), 17792 states have call predecessors, (37748), 20736 states have return successors, (48532), 41108 states have call predecessors, (48532), 37748 states have call successors, (48532) [2022-12-14 11:01:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424264 states to 424264 states and 611691 transitions. [2022-12-14 11:01:35,661 INFO L78 Accepts]: Start accepts. Automaton has 424264 states and 611691 transitions. Word has length 75 [2022-12-14 11:01:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:01:35,661 INFO L495 AbstractCegarLoop]: Abstraction has 424264 states and 611691 transitions. [2022-12-14 11:01:35,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-12-14 11:01:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 424264 states and 611691 transitions. [2022-12-14 11:01:35,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 11:01:35,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:01:35,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:01:35,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 11:01:35,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:01:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:01:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash -989333612, now seen corresponding path program 1 times [2022-12-14 11:01:35,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:01:35,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761258290] [2022-12-14 11:01:35,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:35,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:01:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:35,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:01:35,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761258290] [2022-12-14 11:01:35,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761258290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:01:35,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:01:35,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:01:35,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445459783] [2022-12-14 11:01:35,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:01:35,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:01:35,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:01:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:01:35,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:01:35,794 INFO L87 Difference]: Start difference. First operand 424264 states and 611691 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-12-14 11:02:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:02:30,486 INFO L93 Difference]: Finished difference Result 1126196 states and 1635629 transitions. [2022-12-14 11:02:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:02:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 76 [2022-12-14 11:02:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:02:32,901 INFO L225 Difference]: With dead ends: 1126196 [2022-12-14 11:02:32,901 INFO L226 Difference]: Without dead ends: 701938 [2022-12-14 11:02:33,750 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 [2022-12-14 11:02:33,751 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 720 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:02:33,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 590 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:02:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701938 states. [2022-12-14 11:03:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701938 to 631280. [2022-12-14 11:03:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631280 states, 544203 states have (on average 1.433941010983034) internal successors, (780355), 543644 states have internal predecessors, (780355), 55972 states have call successors, (55972), 26688 states have call predecessors, (55972), 31104 states have return successors, (71780), 60948 states have call predecessors, (71780), 55972 states have call successors, (71780) [2022-12-14 11:03:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631280 states to 631280 states and 908107 transitions. [2022-12-14 11:03:23,958 INFO L78 Accepts]: Start accepts. Automaton has 631280 states and 908107 transitions. Word has length 76 [2022-12-14 11:03:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:03:23,959 INFO L495 AbstractCegarLoop]: Abstraction has 631280 states and 908107 transitions. [2022-12-14 11:03:23,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-12-14 11:03:23,959 INFO L276 IsEmpty]: Start isEmpty. Operand 631280 states and 908107 transitions. [2022-12-14 11:03:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 11:03:23,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:03:23,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:03:23,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 11:03:23,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:03:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:03:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash -495978589, now seen corresponding path program 1 times [2022-12-14 11:03:23,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:03:23,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754621338] [2022-12-14 11:03:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:03:23,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:03:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:03:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:03:24,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:03:24,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754621338] [2022-12-14 11:03:24,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754621338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:03:24,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:03:24,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:03:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633753454] [2022-12-14 11:03:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:03:24,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:03:24,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:03:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:03:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:03:24,129 INFO L87 Difference]: Start difference. First operand 631280 states and 908107 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-12-14 11:05:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:05:16,215 INFO L93 Difference]: Finished difference Result 2024276 states and 2931054 transitions. [2022-12-14 11:05:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:05:16,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 77 [2022-12-14 11:05:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:05:21,877 INFO L225 Difference]: With dead ends: 2024276 [2022-12-14 11:05:21,877 INFO L226 Difference]: Without dead ends: 1393002 [2022-12-14 11:05:23,562 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 [2022-12-14 11:05:23,562 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 723 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:05:23,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 536 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:05:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393002 states. [2022-12-14 11:07:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393002 to 1237096. [2022-12-14 11:07:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237096 states, 1066963 states have (on average 1.4270063722921975) internal successors, (1522563), 1066228 states have internal predecessors, (1522563), 108004 states have call successors, (108004), 53328 states have call predecessors, (108004), 62128 states have return successors, (137380), 117540 states have call predecessors, (137380), 108004 states have call successors, (137380) [2022-12-14 11:07:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237096 states to 1237096 states and 1767947 transitions. [2022-12-14 11:07:16,189 INFO L78 Accepts]: Start accepts. Automaton has 1237096 states and 1767947 transitions. Word has length 77 [2022-12-14 11:07:16,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:07:16,189 INFO L495 AbstractCegarLoop]: Abstraction has 1237096 states and 1767947 transitions. [2022-12-14 11:07:16,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-12-14 11:07:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1237096 states and 1767947 transitions. [2022-12-14 11:07:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 11:07:16,193 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:07:16,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:07:16,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 11:07:16,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:07:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:07:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1398408208, now seen corresponding path program 1 times [2022-12-14 11:07:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:07:16,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117992506] [2022-12-14 11:07:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:07:16,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:07:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:07:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:07:16,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:07:16,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117992506] [2022-12-14 11:07:16,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117992506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:07:16,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:07:16,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 11:07:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411821074] [2022-12-14 11:07:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:07:16,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:07:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:07:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:07:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:07:16,314 INFO L87 Difference]: Start difference. First operand 1237096 states and 1767947 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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)