./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.05.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.05.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS --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 d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f --- 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-8393723 [2022-11-19 07:08:57,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:08:58,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:08:58,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:08:58,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:08:58,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:08:58,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:08:58,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:08:58,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:08:58,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:08:58,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:08:58,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:08:58,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:08:58,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:08:58,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:08:58,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:08:58,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:08:58,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:08:58,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:08:58,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:08:58,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:08:58,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:08:58,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:08:58,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:08:58,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:08:58,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:08:58,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:08:58,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:08:58,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:08:58,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:08:58,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:08:58,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:08:58,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:08:58,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:08:58,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:08:58,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:08:58,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:08:58,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:08:58,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:08:58,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:08:58,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:08:58,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:08:58,181 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:08:58,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:08:58,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:08:58,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:08:58,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:08:58,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:08:58,186 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:08:58,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:08:58,186 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:08:58,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:08:58,188 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:08:58,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:08:58,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:08:58,189 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:08:58,189 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:08:58,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:08:58,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:08:58,190 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:08:58,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:08:58,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:08:58,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:08:58,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:08:58,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:08:58,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:08:58,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:08:58,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:08:58,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:08:58,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:08:58,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:08:58,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:08:58,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:08:58,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:08:58,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:08:58,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:08:58,195 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:08:58,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:08:58,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:08:58,196 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:08:58,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:08:58,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:08:58,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:08:58,197 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_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8722862ca37b1ee13dec8b9e420cd40ba7901837b8f3b6258499da6e8a2ca6f [2022-11-19 07:08:58,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:08:58,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:08:58,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:08:58,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:08:58,531 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:08:58,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/systemc/transmitter.05.cil.c [2022-11-19 07:08:58,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/data/e51ea216b/55dcbd6192644f6fb8789c2252fa22ca/FLAG94bfe5a29 [2022-11-19 07:08:59,117 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:08:59,122 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/sv-benchmarks/c/systemc/transmitter.05.cil.c [2022-11-19 07:08:59,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/data/e51ea216b/55dcbd6192644f6fb8789c2252fa22ca/FLAG94bfe5a29 [2022-11-19 07:08:59,477 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/data/e51ea216b/55dcbd6192644f6fb8789c2252fa22ca [2022-11-19 07:08:59,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:08:59,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:08:59,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:08:59,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:08:59,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:08:59,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:08:59,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ceb941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59, skipping insertion in model container [2022-11-19 07:08:59,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:08:59,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:08:59,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:08:59,791 WARN L234 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_90b4b567-c6d8-4dea-80dd-c82c2879828e/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2022-11-19 07:08:59,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:08:59,925 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:08:59,936 WARN L234 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_90b4b567-c6d8-4dea-80dd-c82c2879828e/sv-benchmarks/c/systemc/transmitter.05.cil.c[706,719] [2022-11-19 07:08:59,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:08:59,984 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:08:59,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59 WrapperNode [2022-11-19 07:08:59,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:08:59,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:08:59,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:08:59,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:08:59,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,030 INFO L138 Inliner]: procedures = 38, calls = 45, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 435 [2022-11-19 07:09:00,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:00,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:09:00,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:09:00,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:09:00,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:09:00,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:09:00,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:09:00,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:09:00,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (1/1) ... [2022-11-19 07:09:00,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:00,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:00,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:09:00,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:09:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:09:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-19 07:09:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-19 07:09:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-19 07:09:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-19 07:09:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-19 07:09:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-19 07:09:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-19 07:09:00,172 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-19 07:09:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-19 07:09:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-19 07:09:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:09:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-19 07:09:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-19 07:09:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:09:00,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:09:00,264 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:09:00,266 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:09:00,879 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:09:01,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:09:01,232 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-19 07:09:01,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:01 BoogieIcfgContainer [2022-11-19 07:09:01,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:09:01,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:09:01,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:09:01,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:09:01,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:08:59" (1/3) ... [2022-11-19 07:09:01,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efa42f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:01, skipping insertion in model container [2022-11-19 07:09:01,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:59" (2/3) ... [2022-11-19 07:09:01,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efa42f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:01, skipping insertion in model container [2022-11-19 07:09:01,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:01" (3/3) ... [2022-11-19 07:09:01,246 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.05.cil.c [2022-11-19 07:09:01,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:09:01,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:09:01,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:09:01,338 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;@30dd71eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:09:01,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:09:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 83 states have (on average 1.5301204819277108) internal successors, (127), 85 states have internal predecessors, (127), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 07:09:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 07:09:01,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:01,355 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] [2022-11-19 07:09:01,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -980002035, now seen corresponding path program 1 times [2022-11-19 07:09:01,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:01,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802245099] [2022-11-19 07:09:01,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:01,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:09:01,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:01,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802245099] [2022-11-19 07:09:01,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802245099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:01,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:01,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:09:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700302770] [2022-11-19 07:09:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:01,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:09:01,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:09:01,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:09:01,812 INFO L87 Difference]: Start difference. First operand has 109 states, 83 states have (on average 1.5301204819277108) internal successors, (127), 85 states have internal predecessors, (127), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:02,263 INFO L93 Difference]: Finished difference Result 310 states and 477 transitions. [2022-11-19 07:09:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:09:02,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 49 [2022-11-19 07:09:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:02,287 INFO L225 Difference]: With dead ends: 310 [2022-11-19 07:09:02,287 INFO L226 Difference]: Without dead ends: 202 [2022-11-19 07:09:02,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:09:02,303 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 268 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:02,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 406 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:09:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-19 07:09:02,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2022-11-19 07:09:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 155 states have (on average 1.4451612903225806) internal successors, (224), 156 states have internal predecessors, (224), 31 states have call successors, (31), 12 states have call predecessors, (31), 12 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-19 07:09:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 286 transitions. [2022-11-19 07:09:02,384 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 286 transitions. Word has length 49 [2022-11-19 07:09:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:02,385 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 286 transitions. [2022-11-19 07:09:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 286 transitions. [2022-11-19 07:09:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 07:09:02,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:02,388 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] [2022-11-19 07:09:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:09:02,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1936930418, now seen corresponding path program 1 times [2022-11-19 07:09:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:02,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720005778] [2022-11-19 07:09:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:09:02,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:02,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720005778] [2022-11-19 07:09:02,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720005778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:02,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:02,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968618175] [2022-11-19 07:09:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:02,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:02,677 INFO L87 Difference]: Start difference. First operand 199 states and 286 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:03,353 INFO L93 Difference]: Finished difference Result 671 states and 971 transitions. [2022-11-19 07:09:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:09:03,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 49 [2022-11-19 07:09:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:03,366 INFO L225 Difference]: With dead ends: 671 [2022-11-19 07:09:03,367 INFO L226 Difference]: Without dead ends: 458 [2022-11-19 07:09:03,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:09:03,378 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 528 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:03,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 650 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:09:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-19 07:09:03,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 446. [2022-11-19 07:09:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 357 states have (on average 1.4397759103641457) internal successors, (514), 354 states have internal predecessors, (514), 60 states have call successors, (60), 26 states have call predecessors, (60), 28 states have return successors, (66), 66 states have call predecessors, (66), 60 states have call successors, (66) [2022-11-19 07:09:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 640 transitions. [2022-11-19 07:09:03,483 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 640 transitions. Word has length 49 [2022-11-19 07:09:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:03,485 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 640 transitions. [2022-11-19 07:09:03,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 640 transitions. [2022-11-19 07:09:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 07:09:03,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:03,496 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] [2022-11-19 07:09:03,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:09:03,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:03,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash 781479119, now seen corresponding path program 1 times [2022-11-19 07:09:03,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:03,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328537409] [2022-11-19 07:09:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:09:03,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328537409] [2022-11-19 07:09:03,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328537409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:03,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:03,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:03,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53895336] [2022-11-19 07:09:03,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:03,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:03,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:03,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:03,726 INFO L87 Difference]: Start difference. First operand 446 states and 640 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:04,390 INFO L93 Difference]: Finished difference Result 1537 states and 2228 transitions. [2022-11-19 07:09:04,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:09:04,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 49 [2022-11-19 07:09:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:04,400 INFO L225 Difference]: With dead ends: 1537 [2022-11-19 07:09:04,400 INFO L226 Difference]: Without dead ends: 1061 [2022-11-19 07:09:04,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:09:04,412 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 528 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:04,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 532 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:09:04,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-19 07:09:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 833. [2022-11-19 07:09:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 668 states have (on average 1.437125748502994) internal successors, (960), 666 states have internal predecessors, (960), 108 states have call successors, (108), 50 states have call predecessors, (108), 56 states have return successors, (125), 117 states have call predecessors, (125), 108 states have call successors, (125) [2022-11-19 07:09:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1193 transitions. [2022-11-19 07:09:04,529 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1193 transitions. Word has length 49 [2022-11-19 07:09:04,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:04,531 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1193 transitions. [2022-11-19 07:09:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1193 transitions. [2022-11-19 07:09:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 07:09:04,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:04,533 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] [2022-11-19 07:09:04,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:09:04,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash 724334894, now seen corresponding path program 1 times [2022-11-19 07:09:04,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:04,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117728864] [2022-11-19 07:09:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:04,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:09:04,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:04,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117728864] [2022-11-19 07:09:04,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117728864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:04,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:04,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864225759] [2022-11-19 07:09:04,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:04,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:04,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:04,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:04,697 INFO L87 Difference]: Start difference. First operand 833 states and 1193 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:05,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:05,220 INFO L93 Difference]: Finished difference Result 2824 states and 4109 transitions. [2022-11-19 07:09:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:09:05,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 49 [2022-11-19 07:09:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:05,232 INFO L225 Difference]: With dead ends: 2824 [2022-11-19 07:09:05,233 INFO L226 Difference]: Without dead ends: 1930 [2022-11-19 07:09:05,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:09:05,237 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 530 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:05,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 533 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:09:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2022-11-19 07:09:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1589. [2022-11-19 07:09:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1268 states have (on average 1.4290220820189274) internal successors, (1812), 1270 states have internal predecessors, (1812), 208 states have call successors, (208), 98 states have call predecessors, (208), 112 states have return successors, (249), 221 states have call predecessors, (249), 208 states have call successors, (249) [2022-11-19 07:09:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2269 transitions. [2022-11-19 07:09:05,415 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2269 transitions. Word has length 49 [2022-11-19 07:09:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:05,415 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2269 transitions. [2022-11-19 07:09:05,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:09:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2269 transitions. [2022-11-19 07:09:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:09:05,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:05,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:05,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:09:05,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash -590206767, now seen corresponding path program 1 times [2022-11-19 07:09:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:05,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652861328] [2022-11-19 07:09:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:05,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:09:05,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:05,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652861328] [2022-11-19 07:09:05,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652861328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:05,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:05,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:09:05,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123031996] [2022-11-19 07:09:05,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:05,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:09:05,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:05,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:09:05,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:09:05,674 INFO L87 Difference]: Start difference. First operand 1589 states and 2269 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:06,244 INFO L93 Difference]: Finished difference Result 4762 states and 6845 transitions. [2022-11-19 07:09:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:09:06,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2022-11-19 07:09:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:06,262 INFO L225 Difference]: With dead ends: 4762 [2022-11-19 07:09:06,262 INFO L226 Difference]: Without dead ends: 3179 [2022-11-19 07:09:06,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:09:06,269 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 489 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:06,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 448 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:09:06,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-11-19 07:09:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2635. [2022-11-19 07:09:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2126 states have (on average 1.4153339604891815) internal successors, (3009), 2129 states have internal predecessors, (3009), 316 states have call successors, (316), 164 states have call predecessors, (316), 192 states have return successors, (398), 342 states have call predecessors, (398), 316 states have call successors, (398) [2022-11-19 07:09:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3723 transitions. [2022-11-19 07:09:06,479 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3723 transitions. Word has length 64 [2022-11-19 07:09:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:06,479 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 3723 transitions. [2022-11-19 07:09:06,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3723 transitions. [2022-11-19 07:09:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:09:06,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:06,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:06,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:09:06,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1982902333, now seen corresponding path program 1 times [2022-11-19 07:09:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:06,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786090123] [2022-11-19 07:09:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:06,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:09:06,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:06,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786090123] [2022-11-19 07:09:06,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786090123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:06,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:06,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:09:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684267309] [2022-11-19 07:09:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:06,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:09:06,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:06,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:09:06,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:09:06,799 INFO L87 Difference]: Start difference. First operand 2635 states and 3723 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:07,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:07,586 INFO L93 Difference]: Finished difference Result 9255 states and 13148 transitions. [2022-11-19 07:09:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:09:07,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-11-19 07:09:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:07,621 INFO L225 Difference]: With dead ends: 9255 [2022-11-19 07:09:07,621 INFO L226 Difference]: Without dead ends: 6626 [2022-11-19 07:09:07,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:09:07,631 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 524 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:07,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 340 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:09:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2022-11-19 07:09:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 5108. [2022-11-19 07:09:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5108 states, 4119 states have (on average 1.4039815489196408) internal successors, (5783), 4126 states have internal predecessors, (5783), 604 states have call successors, (604), 328 states have call predecessors, (604), 384 states have return successors, (754), 654 states have call predecessors, (754), 604 states have call successors, (754) [2022-11-19 07:09:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 7141 transitions. [2022-11-19 07:09:08,141 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 7141 transitions. Word has length 66 [2022-11-19 07:09:08,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:08,142 INFO L495 AbstractCegarLoop]: Abstraction has 5108 states and 7141 transitions. [2022-11-19 07:09:08,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 7141 transitions. [2022-11-19 07:09:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:09:08,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:08,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:08,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:09:08,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:08,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:08,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1200028401, now seen corresponding path program 1 times [2022-11-19 07:09:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:08,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513602367] [2022-11-19 07:09:08,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:08,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:09:08,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:08,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513602367] [2022-11-19 07:09:08,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513602367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:08,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:08,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:09:08,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745931392] [2022-11-19 07:09:08,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:08,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:09:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:08,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:09:08,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:09:08,368 INFO L87 Difference]: Start difference. First operand 5108 states and 7141 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:09,798 INFO L93 Difference]: Finished difference Result 14036 states and 19761 transitions. [2022-11-19 07:09:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:09:09,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-11-19 07:09:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:09,863 INFO L225 Difference]: With dead ends: 14036 [2022-11-19 07:09:09,863 INFO L226 Difference]: Without dead ends: 8934 [2022-11-19 07:09:09,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:09:09,880 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 434 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:09,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 443 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:09:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8934 states. [2022-11-19 07:09:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8934 to 7564. [2022-11-19 07:09:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7564 states, 6087 states have (on average 1.3936257598160013) internal successors, (8483), 6088 states have internal predecessors, (8483), 900 states have call successors, (900), 496 states have call predecessors, (900), 576 states have return successors, (1108), 980 states have call predecessors, (1108), 900 states have call successors, (1108) [2022-11-19 07:09:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7564 states to 7564 states and 10491 transitions. [2022-11-19 07:09:10,900 INFO L78 Accepts]: Start accepts. Automaton has 7564 states and 10491 transitions. Word has length 68 [2022-11-19 07:09:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:10,901 INFO L495 AbstractCegarLoop]: Abstraction has 7564 states and 10491 transitions. [2022-11-19 07:09:10,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 7564 states and 10491 transitions. [2022-11-19 07:09:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:09:10,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:10,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:10,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:09:10,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1716226171, now seen corresponding path program 1 times [2022-11-19 07:09:10,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:10,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746813229] [2022-11-19 07:09:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:09:11,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:11,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746813229] [2022-11-19 07:09:11,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746813229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:11,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:11,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:09:11,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416597872] [2022-11-19 07:09:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:11,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:09:11,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:11,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:09:11,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:09:11,183 INFO L87 Difference]: Start difference. First operand 7564 states and 10491 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:12,779 INFO L93 Difference]: Finished difference Result 20318 states and 28385 transitions. [2022-11-19 07:09:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:09:12,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2022-11-19 07:09:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:12,862 INFO L225 Difference]: With dead ends: 20318 [2022-11-19 07:09:12,862 INFO L226 Difference]: Without dead ends: 12760 [2022-11-19 07:09:12,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:09:12,887 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 417 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:12,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 428 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:09:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12760 states. [2022-11-19 07:09:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12760 to 11254. [2022-11-19 07:09:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11254 states, 9043 states have (on average 1.382837553909101) internal successors, (12505), 9028 states have internal predecessors, (12505), 1346 states have call successors, (1346), 752 states have call predecessors, (1346), 864 states have return successors, (1630), 1474 states have call predecessors, (1630), 1346 states have call successors, (1630) [2022-11-19 07:09:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11254 states to 11254 states and 15481 transitions. [2022-11-19 07:09:14,330 INFO L78 Accepts]: Start accepts. Automaton has 11254 states and 15481 transitions. Word has length 70 [2022-11-19 07:09:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:14,331 INFO L495 AbstractCegarLoop]: Abstraction has 11254 states and 15481 transitions. [2022-11-19 07:09:14,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 11254 states and 15481 transitions. [2022-11-19 07:09:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:09:14,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:14,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:14,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:09:14,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash 569561777, now seen corresponding path program 1 times [2022-11-19 07:09:14,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:14,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139870273] [2022-11-19 07:09:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:14,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:09:14,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:14,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139870273] [2022-11-19 07:09:14,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139870273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:14,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:14,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:09:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188140611] [2022-11-19 07:09:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:09:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:09:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:09:14,561 INFO L87 Difference]: Start difference. First operand 11254 states and 15481 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:17,429 INFO L93 Difference]: Finished difference Result 35514 states and 49024 transitions. [2022-11-19 07:09:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:09:17,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 72 [2022-11-19 07:09:17,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:17,547 INFO L225 Difference]: With dead ends: 35514 [2022-11-19 07:09:17,547 INFO L226 Difference]: Without dead ends: 24266 [2022-11-19 07:09:17,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:09:17,587 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 413 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:17,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 329 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:09:17,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24266 states. [2022-11-19 07:09:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24266 to 21672. [2022-11-19 07:09:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21672 states, 17425 states have (on average 1.3698134863701579) internal successors, (23869), 17410 states have internal predecessors, (23869), 2556 states have call successors, (2556), 1480 states have call predecessors, (2556), 1690 states have return successors, (3054), 2782 states have call predecessors, (3054), 2556 states have call successors, (3054) [2022-11-19 07:09:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21672 states to 21672 states and 29479 transitions. [2022-11-19 07:09:20,538 INFO L78 Accepts]: Start accepts. Automaton has 21672 states and 29479 transitions. Word has length 72 [2022-11-19 07:09:20,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:20,539 INFO L495 AbstractCegarLoop]: Abstraction has 21672 states and 29479 transitions. [2022-11-19 07:09:20,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 07:09:20,540 INFO L276 IsEmpty]: Start isEmpty. Operand 21672 states and 29479 transitions. [2022-11-19 07:09:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:09:20,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:20,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:20,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:09:20,549 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:20,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash -978174771, now seen corresponding path program 1 times [2022-11-19 07:09:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:20,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148663743] [2022-11-19 07:09:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:20,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:09:20,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:20,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148663743] [2022-11-19 07:09:20,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148663743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:20,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:20,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:09:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037177210] [2022-11-19 07:09:20,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:20,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:09:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:20,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:09:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:09:20,626 INFO L87 Difference]: Start difference. First operand 21672 states and 29479 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:09:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:23,030 INFO L93 Difference]: Finished difference Result 41506 states and 57162 transitions. [2022-11-19 07:09:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:09:23,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2022-11-19 07:09:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:23,183 INFO L225 Difference]: With dead ends: 41506 [2022-11-19 07:09:23,183 INFO L226 Difference]: Without dead ends: 29368 [2022-11-19 07:09:23,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:09:23,222 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 91 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:23,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 351 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:09:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29368 states. [2022-11-19 07:09:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29368 to 23946. [2022-11-19 07:09:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23946 states, 19483 states have (on average 1.3828979109993327) internal successors, (26943), 19468 states have internal predecessors, (26943), 2664 states have call successors, (2664), 1588 states have call predecessors, (2664), 1798 states have return successors, (3162), 2890 states have call predecessors, (3162), 2664 states have call successors, (3162) [2022-11-19 07:09:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23946 states to 23946 states and 32769 transitions. [2022-11-19 07:09:25,954 INFO L78 Accepts]: Start accepts. Automaton has 23946 states and 32769 transitions. Word has length 74 [2022-11-19 07:09:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:25,955 INFO L495 AbstractCegarLoop]: Abstraction has 23946 states and 32769 transitions. [2022-11-19 07:09:25,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:09:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 23946 states and 32769 transitions. [2022-11-19 07:09:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:09:25,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:25,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:25,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:09:25,966 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:25,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1461176118, now seen corresponding path program 1 times [2022-11-19 07:09:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:25,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204121795] [2022-11-19 07:09:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:09:26,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:26,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204121795] [2022-11-19 07:09:26,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204121795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:26,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:26,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:09:26,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419191394] [2022-11-19 07:09:26,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:26,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:09:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:26,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:09:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:09:26,039 INFO L87 Difference]: Start difference. First operand 23946 states and 32769 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:09:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:28,931 INFO L93 Difference]: Finished difference Result 41529 states and 57129 transitions. [2022-11-19 07:09:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:09:28,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2022-11-19 07:09:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:29,040 INFO L225 Difference]: With dead ends: 41529 [2022-11-19 07:09:29,041 INFO L226 Difference]: Without dead ends: 25612 [2022-11-19 07:09:29,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:09:29,075 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 118 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:29,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 261 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:09:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25612 states. [2022-11-19 07:09:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25612 to 23062. [2022-11-19 07:09:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23062 states, 18767 states have (on average 1.3742739915809665) internal successors, (25791), 18720 states have internal predecessors, (25791), 2640 states have call successors, (2640), 1580 states have call predecessors, (2640), 1654 states have return successors, (2810), 2762 states have call predecessors, (2810), 2640 states have call successors, (2810) [2022-11-19 07:09:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23062 states to 23062 states and 31241 transitions. [2022-11-19 07:09:31,699 INFO L78 Accepts]: Start accepts. Automaton has 23062 states and 31241 transitions. Word has length 83 [2022-11-19 07:09:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:31,700 INFO L495 AbstractCegarLoop]: Abstraction has 23062 states and 31241 transitions. [2022-11-19 07:09:31,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 07:09:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 23062 states and 31241 transitions. [2022-11-19 07:09:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 07:09:31,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:31,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:31,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:09:31,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:31,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1385793060, now seen corresponding path program 1 times [2022-11-19 07:09:31,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:31,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174149415] [2022-11-19 07:09:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 07:09:31,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:31,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174149415] [2022-11-19 07:09:31,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174149415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:31,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:31,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:09:31,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332325787] [2022-11-19 07:09:31,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:31,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:09:31,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:31,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:09:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:09:31,835 INFO L87 Difference]: Start difference. First operand 23062 states and 31241 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-19 07:09:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:35,563 INFO L93 Difference]: Finished difference Result 57507 states and 78300 transitions. [2022-11-19 07:09:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:09:35,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 103 [2022-11-19 07:09:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:35,678 INFO L225 Difference]: With dead ends: 57507 [2022-11-19 07:09:35,678 INFO L226 Difference]: Without dead ends: 34450 [2022-11-19 07:09:35,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:09:35,728 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 115 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:35,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 257 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:09:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34450 states. [2022-11-19 07:09:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34450 to 34268. [2022-11-19 07:09:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34268 states, 27909 states have (on average 1.3596689240030098) internal successors, (37947), 27844 states have internal predecessors, (37947), 3892 states have call successors, (3892), 2358 states have call predecessors, (3892), 2466 states have return successors, (4134), 4066 states have call predecessors, (4134), 3892 states have call successors, (4134) [2022-11-19 07:09:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34268 states to 34268 states and 45973 transitions. [2022-11-19 07:09:39,316 INFO L78 Accepts]: Start accepts. Automaton has 34268 states and 45973 transitions. Word has length 103 [2022-11-19 07:09:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:39,317 INFO L495 AbstractCegarLoop]: Abstraction has 34268 states and 45973 transitions. [2022-11-19 07:09:39,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-19 07:09:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 34268 states and 45973 transitions. [2022-11-19 07:09:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-19 07:09:39,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:39,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:39,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:09:39,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1262328639, now seen corresponding path program 1 times [2022-11-19 07:09:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:39,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195268013] [2022-11-19 07:09:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:39,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:09:39,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:39,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195268013] [2022-11-19 07:09:39,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195268013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:09:39,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303480804] [2022-11-19 07:09:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:39,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:39,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:39,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:09:39,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b4b567-c6d8-4dea-80dd-c82c2879828e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:09:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:39,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:09:39,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:09:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:09:39,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:09:39,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303480804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:39,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:09:39,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-19 07:09:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549137838] [2022-11-19 07:09:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:39,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:09:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:09:39,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:09:39,756 INFO L87 Difference]: Start difference. First operand 34268 states and 45973 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:09:43,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:43,310 INFO L93 Difference]: Finished difference Result 65562 states and 88933 transitions. [2022-11-19 07:09:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:09:43,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 105 [2022-11-19 07:09:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:43,452 INFO L225 Difference]: With dead ends: 65562 [2022-11-19 07:09:43,453 INFO L226 Difference]: Without dead ends: 42506 [2022-11-19 07:09:43,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:09:43,503 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 82 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:43,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 343 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:09:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42506 states.