./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a 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_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- 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-5e519f3 [2022-11-02 20:43:12,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:12,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:12,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:12,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:12,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:12,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:12,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:12,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:12,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:12,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:12,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:12,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:12,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:12,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:12,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:12,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:12,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:12,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:12,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:12,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:12,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:12,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:12,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:12,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:12,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:12,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:12,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:12,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:12,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:12,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:12,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:12,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:12,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:12,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:12,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:12,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:12,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:12,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:12,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:12,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:12,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:43:12,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:12,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:12,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:12,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:12,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:43:12,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:43:12,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:12,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:12,302 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:12,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:12,304 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:43:12,304 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:43:12,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:12,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:43:12,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:12,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:43:12,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:43:12,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:43:12,305 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:43:12,305 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:43:12,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:12,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:12,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:43:12,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:12,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:12,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:43:12,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:12,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:12,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:43:12,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:43:12,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:12,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:43:12,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:43:12,309 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_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-11-02 20:43:12,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:12,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:12,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:12,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:12,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:12,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-02 20:43:12,652 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/data/060d2ffee/adfbbf55045c44e8b422d3272c4c40d4/FLAGf15ce75f1 [2022-11-02 20:43:13,254 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:13,255 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-02 20:43:13,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/data/060d2ffee/adfbbf55045c44e8b422d3272c4c40d4/FLAGf15ce75f1 [2022-11-02 20:43:13,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/data/060d2ffee/adfbbf55045c44e8b422d3272c4c40d4 [2022-11-02 20:43:13,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:13,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:13,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:13,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:13,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:13,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:13" (1/1) ... [2022-11-02 20:43:13,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb3d1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:13, skipping insertion in model container [2022-11-02 20:43:13,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:13" (1/1) ... [2022-11-02 20:43:13,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:13,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:13,784 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:43:14,091 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-02 20:43:14,094 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-02 20:43:14,095 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-02 20:43:14,183 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-02 20:43:14,184 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-02 20:43:14,186 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-02 20:43:14,187 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-02 20:43:14,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:14,211 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:43:14,232 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:43:14,264 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-02 20:43:14,271 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-02 20:43:14,272 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-02 20:43:14,291 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-02 20:43:14,293 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-02 20:43:14,294 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-02 20:43:14,296 WARN L230 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_9a3f127a-0880-4da0-944b-09dcea650003/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-02 20:43:14,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:14,367 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:43:14,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14 WrapperNode [2022-11-02 20:43:14,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:14,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:14,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:43:14,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:43:14,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,448 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 229 [2022-11-02 20:43:14,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:14,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:43:14,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:43:14,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:43:14,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:43:14,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:43:14,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:43:14,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:43:14,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (1/1) ... [2022-11-02 20:43:14,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:14,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:14,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:14,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:43:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-11-02 20:43:14,573 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-11-02 20:43:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-11-02 20:43:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-11-02 20:43:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:43:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:43:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:43:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:43:14,574 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:43:14,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:43:14,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:43:14,577 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:43:14,807 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:43:14,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:43:15,438 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:43:15,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:43:15,454 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:43:15,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:15 BoogieIcfgContainer [2022-11-02 20:43:15,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:43:15,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:43:15,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:43:15,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:43:15,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:43:13" (1/3) ... [2022-11-02 20:43:15,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63556628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:15, skipping insertion in model container [2022-11-02 20:43:15,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:14" (2/3) ... [2022-11-02 20:43:15,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63556628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:43:15, skipping insertion in model container [2022-11-02 20:43:15,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:15" (3/3) ... [2022-11-02 20:43:15,468 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-11-02 20:43:15,476 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:43:15,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:43:15,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-02 20:43:15,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:43:15,581 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:43:15,629 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:43:15,645 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 281 transitions, 578 flow [2022-11-02 20:43:15,653 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 281 transitions, 578 flow [2022-11-02 20:43:15,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 281 transitions, 578 flow [2022-11-02 20:43:15,851 INFO L130 PetriNetUnfolder]: 17/279 cut-off events. [2022-11-02 20:43:15,852 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:43:15,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 279 events. 17/279 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 623 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2022-11-02 20:43:15,880 INFO L118 LiptonReduction]: Number of co-enabled transitions 31780 [2022-11-02 20:43:24,624 INFO L133 LiptonReduction]: Checked pairs total: 67581 [2022-11-02 20:43:24,624 INFO L135 LiptonReduction]: Total number of compositions: 267 [2022-11-02 20:43:24,634 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 85 transitions, 186 flow [2022-11-02 20:43:25,042 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10141 states, 9251 states have (on average 3.6603610420495083) internal successors, (33862), 10140 states have internal predecessors, (33862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:25,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:43:25,099 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;@7951d65e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:43:25,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-02 20:43:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 10141 states, 9251 states have (on average 3.6603610420495083) internal successors, (33862), 10140 states have internal predecessors, (33862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:43:25,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:25,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:43:25,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writer_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1881689511, now seen corresponding path program 1 times [2022-11-02 20:43:25,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:25,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503038243] [2022-11-02 20:43:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:25,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:25,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503038243] [2022-11-02 20:43:25,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503038243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:25,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:25,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5110902] [2022-11-02 20:43:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:25,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:25,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:25,606 INFO L87 Difference]: Start difference. First operand has 10141 states, 9251 states have (on average 3.6603610420495083) internal successors, (33862), 10140 states have internal predecessors, (33862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:26,205 INFO L93 Difference]: Finished difference Result 14412 states and 45939 transitions. [2022-11-02 20:43:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:26,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:43:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:26,372 INFO L225 Difference]: With dead ends: 14412 [2022-11-02 20:43:26,373 INFO L226 Difference]: Without dead ends: 14412 [2022-11-02 20:43:26,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:26,377 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:26,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 35 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:43:26,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14412 states. [2022-11-02 20:43:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14412 to 12432. [2022-11-02 20:43:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12432 states, 11857 states have (on average 3.519861685080543) internal successors, (41735), 12431 states have internal predecessors, (41735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 41735 transitions. [2022-11-02 20:43:27,383 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 41735 transitions. Word has length 6 [2022-11-02 20:43:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:27,384 INFO L495 AbstractCegarLoop]: Abstraction has 12432 states and 41735 transitions. [2022-11-02 20:43:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 41735 transitions. [2022-11-02 20:43:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:43:27,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:27,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:43:27,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:43:27,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:27,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:27,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1881692081, now seen corresponding path program 1 times [2022-11-02 20:43:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:27,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335571878] [2022-11-02 20:43:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:27,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:27,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335571878] [2022-11-02 20:43:27,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335571878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:27,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:27,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984146634] [2022-11-02 20:43:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:27,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:27,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:27,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:27,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:27,477 INFO L87 Difference]: Start difference. First operand 12432 states and 41735 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:28,134 INFO L93 Difference]: Finished difference Result 21132 states and 71248 transitions. [2022-11-02 20:43:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:28,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:43:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:28,475 INFO L225 Difference]: With dead ends: 21132 [2022-11-02 20:43:28,476 INFO L226 Difference]: Without dead ends: 21132 [2022-11-02 20:43:28,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:28,477 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 61 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:28,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 34 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:43:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21132 states. [2022-11-02 20:43:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21132 to 18232. [2022-11-02 20:43:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18232 states, 17657 states have (on average 3.655887183553265) internal successors, (64552), 18231 states have internal predecessors, (64552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18232 states to 18232 states and 64552 transitions. [2022-11-02 20:43:29,560 INFO L78 Accepts]: Start accepts. Automaton has 18232 states and 64552 transitions. Word has length 6 [2022-11-02 20:43:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:29,560 INFO L495 AbstractCegarLoop]: Abstraction has 18232 states and 64552 transitions. [2022-11-02 20:43:29,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 18232 states and 64552 transitions. [2022-11-02 20:43:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:43:29,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:29,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:43:29,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1797166230, now seen corresponding path program 1 times [2022-11-02 20:43:29,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:29,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821972238] [2022-11-02 20:43:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:30,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:30,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821972238] [2022-11-02 20:43:30,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821972238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:30,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:30,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245070532] [2022-11-02 20:43:30,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:30,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:30,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:30,270 INFO L87 Difference]: Start difference. First operand 18232 states and 64552 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:30,988 INFO L93 Difference]: Finished difference Result 18828 states and 66334 transitions. [2022-11-02 20:43:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:30,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:43:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:31,127 INFO L225 Difference]: With dead ends: 18828 [2022-11-02 20:43:31,127 INFO L226 Difference]: Without dead ends: 18828 [2022-11-02 20:43:31,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:43:31,132 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 160 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:31,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 16 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:43:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18828 states. [2022-11-02 20:43:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18828 to 18636. [2022-11-02 20:43:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18636 states, 18061 states have (on average 3.6406622003211337) internal successors, (65754), 18635 states have internal predecessors, (65754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18636 states to 18636 states and 65754 transitions. [2022-11-02 20:43:32,045 INFO L78 Accepts]: Start accepts. Automaton has 18636 states and 65754 transitions. Word has length 7 [2022-11-02 20:43:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:32,045 INFO L495 AbstractCegarLoop]: Abstraction has 18636 states and 65754 transitions. [2022-11-02 20:43:32,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18636 states and 65754 transitions. [2022-11-02 20:43:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:43:32,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:32,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:32,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:43:32,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:32,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1797086659, now seen corresponding path program 1 times [2022-11-02 20:43:32,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:32,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385765920] [2022-11-02 20:43:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:32,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385765920] [2022-11-02 20:43:32,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385765920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:32,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:32,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:43:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619685394] [2022-11-02 20:43:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:32,706 INFO L87 Difference]: Start difference. First operand 18636 states and 65754 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:33,309 INFO L93 Difference]: Finished difference Result 18612 states and 65638 transitions. [2022-11-02 20:43:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:43:33,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:43:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:33,421 INFO L225 Difference]: With dead ends: 18612 [2022-11-02 20:43:33,421 INFO L226 Difference]: Without dead ends: 18612 [2022-11-02 20:43:33,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:43:33,423 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 89 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:33,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 13 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:43:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18612 states. [2022-11-02 20:43:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18612 to 18572. [2022-11-02 20:43:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18572 states, 17997 states have (on average 3.6402733788964827) internal successors, (65514), 18571 states have internal predecessors, (65514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18572 states to 18572 states and 65514 transitions. [2022-11-02 20:43:34,142 INFO L78 Accepts]: Start accepts. Automaton has 18572 states and 65514 transitions. Word has length 7 [2022-11-02 20:43:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:34,142 INFO L495 AbstractCegarLoop]: Abstraction has 18572 states and 65514 transitions. [2022-11-02 20:43:34,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 18572 states and 65514 transitions. [2022-11-02 20:43:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:43:34,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:34,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:43:34,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash 525655978, now seen corresponding path program 1 times [2022-11-02 20:43:34,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:34,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058589762] [2022-11-02 20:43:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:34,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:34,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058589762] [2022-11-02 20:43:34,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058589762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:34,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:34,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:43:34,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331325928] [2022-11-02 20:43:34,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:34,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:43:34,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:34,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:43:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:43:34,560 INFO L87 Difference]: Start difference. First operand 18572 states and 65514 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:36,052 INFO L93 Difference]: Finished difference Result 40582 states and 134478 transitions. [2022-11-02 20:43:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:43:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:43:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:36,247 INFO L225 Difference]: With dead ends: 40582 [2022-11-02 20:43:36,248 INFO L226 Difference]: Without dead ends: 40582 [2022-11-02 20:43:36,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:43:36,249 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 612 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:36,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 99 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:43:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40582 states. [2022-11-02 20:43:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40582 to 22593. [2022-11-02 20:43:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22593 states, 22018 states have (on average 3.701289853756018) internal successors, (81495), 22592 states have internal predecessors, (81495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22593 states to 22593 states and 81495 transitions. [2022-11-02 20:43:37,524 INFO L78 Accepts]: Start accepts. Automaton has 22593 states and 81495 transitions. Word has length 11 [2022-11-02 20:43:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:37,525 INFO L495 AbstractCegarLoop]: Abstraction has 22593 states and 81495 transitions. [2022-11-02 20:43:37,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 22593 states and 81495 transitions. [2022-11-02 20:43:37,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:43:37,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:37,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:37,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:43:37,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting writer_fnErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 525656139, now seen corresponding path program 1 times [2022-11-02 20:43:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:37,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214729331] [2022-11-02 20:43:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:37,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:37,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214729331] [2022-11-02 20:43:37,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214729331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:37,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:37,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:43:37,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897600095] [2022-11-02 20:43:37,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:37,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:43:37,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:37,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:43:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:43:37,975 INFO L87 Difference]: Start difference. First operand 22593 states and 81495 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:39,398 INFO L93 Difference]: Finished difference Result 40510 states and 132888 transitions. [2022-11-02 20:43:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:43:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:43:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:39,599 INFO L225 Difference]: With dead ends: 40510 [2022-11-02 20:43:39,600 INFO L226 Difference]: Without dead ends: 40510 [2022-11-02 20:43:39,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:43:39,600 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 547 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:39,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 104 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:43:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40510 states. [2022-11-02 20:43:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40510 to 22539. [2022-11-02 20:43:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22539 states, 21964 states have (on average 3.6369058459297032) internal successors, (79881), 22538 states have internal predecessors, (79881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22539 states to 22539 states and 79881 transitions. [2022-11-02 20:43:40,901 INFO L78 Accepts]: Start accepts. Automaton has 22539 states and 79881 transitions. Word has length 11 [2022-11-02 20:43:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:40,901 INFO L495 AbstractCegarLoop]: Abstraction has 22539 states and 79881 transitions. [2022-11-02 20:43:40,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 22539 states and 79881 transitions. [2022-11-02 20:43:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:43:40,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:40,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:40,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:43:40,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:40,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1277751897, now seen corresponding path program 1 times [2022-11-02 20:43:40,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:40,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858652041] [2022-11-02 20:43:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:41,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:41,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858652041] [2022-11-02 20:43:41,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858652041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:41,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:41,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:43:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737709121] [2022-11-02 20:43:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:43:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:43:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:43:41,125 INFO L87 Difference]: Start difference. First operand 22539 states and 79881 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:42,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:42,680 INFO L93 Difference]: Finished difference Result 49702 states and 167067 transitions. [2022-11-02 20:43:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:43:42,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:43:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:43,015 INFO L225 Difference]: With dead ends: 49702 [2022-11-02 20:43:43,015 INFO L226 Difference]: Without dead ends: 49702 [2022-11-02 20:43:43,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:43:43,017 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 411 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:43,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 90 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:43:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49702 states. [2022-11-02 20:43:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49702 to 28297. [2022-11-02 20:43:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28297 states, 27722 states have (on average 3.712250198398384) internal successors, (102911), 28296 states have internal predecessors, (102911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28297 states to 28297 states and 102911 transitions. [2022-11-02 20:43:44,242 INFO L78 Accepts]: Start accepts. Automaton has 28297 states and 102911 transitions. Word has length 11 [2022-11-02 20:43:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:44,242 INFO L495 AbstractCegarLoop]: Abstraction has 28297 states and 102911 transitions. [2022-11-02 20:43:44,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand 28297 states and 102911 transitions. [2022-11-02 20:43:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:43:44,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:44,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:44,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:43:44,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:44,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1277751899, now seen corresponding path program 1 times [2022-11-02 20:43:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:44,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934859946] [2022-11-02 20:43:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:44,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:44,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:44,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934859946] [2022-11-02 20:43:44,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934859946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:44,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:44,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:43:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610904970] [2022-11-02 20:43:44,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:44,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:43:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:43:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:43:44,476 INFO L87 Difference]: Start difference. First operand 28297 states and 102911 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:46,148 INFO L93 Difference]: Finished difference Result 49582 states and 164221 transitions. [2022-11-02 20:43:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:43:46,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:43:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:46,386 INFO L225 Difference]: With dead ends: 49582 [2022-11-02 20:43:46,386 INFO L226 Difference]: Without dead ends: 49582 [2022-11-02 20:43:46,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:43:46,387 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 625 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:46,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 88 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:43:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49582 states. [2022-11-02 20:43:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49582 to 28203. [2022-11-02 20:43:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28203 states, 27628 states have (on average 3.618864919646735) internal successors, (99982), 28202 states have internal predecessors, (99982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28203 states to 28203 states and 99982 transitions. [2022-11-02 20:43:47,445 INFO L78 Accepts]: Start accepts. Automaton has 28203 states and 99982 transitions. Word has length 11 [2022-11-02 20:43:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:47,446 INFO L495 AbstractCegarLoop]: Abstraction has 28203 states and 99982 transitions. [2022-11-02 20:43:47,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 28203 states and 99982 transitions. [2022-11-02 20:43:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:43:47,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:47,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:47,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:43:47,448 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:47,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1792814054, now seen corresponding path program 1 times [2022-11-02 20:43:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:47,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440603529] [2022-11-02 20:43:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:47,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:47,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:47,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440603529] [2022-11-02 20:43:47,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440603529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:47,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:47,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074779765] [2022-11-02 20:43:47,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:47,514 INFO L87 Difference]: Start difference. First operand 28203 states and 99982 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:47,699 INFO L93 Difference]: Finished difference Result 9799 states and 26734 transitions. [2022-11-02 20:43:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:47,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:43:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:47,731 INFO L225 Difference]: With dead ends: 9799 [2022-11-02 20:43:47,731 INFO L226 Difference]: Without dead ends: 9799 [2022-11-02 20:43:47,732 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 [2022-11-02 20:43:47,732 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 59 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:47,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 30 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:43:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2022-11-02 20:43:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 9625. [2022-11-02 20:43:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9625 states, 9185 states have (on average 2.8547632008709853) internal successors, (26221), 9624 states have internal predecessors, (26221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9625 states to 9625 states and 26221 transitions. [2022-11-02 20:43:47,945 INFO L78 Accepts]: Start accepts. Automaton has 9625 states and 26221 transitions. Word has length 13 [2022-11-02 20:43:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:47,945 INFO L495 AbstractCegarLoop]: Abstraction has 9625 states and 26221 transitions. [2022-11-02 20:43:47,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 9625 states and 26221 transitions. [2022-11-02 20:43:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:43:47,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:47,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:43:47,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting writer_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash 372148710, now seen corresponding path program 1 times [2022-11-02 20:43:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:47,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470054260] [2022-11-02 20:43:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:48,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470054260] [2022-11-02 20:43:48,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470054260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:48,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718284697] [2022-11-02 20:43:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:48,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:48,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:48,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:48,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:43:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:48,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:43:48,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:48,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:48,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718284697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:48,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:48,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:43:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283986948] [2022-11-02 20:43:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:43:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:43:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:48,250 INFO L87 Difference]: Start difference. First operand 9625 states and 26221 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:48,562 INFO L93 Difference]: Finished difference Result 9135 states and 24389 transitions. [2022-11-02 20:43:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:43:48,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:43:48,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:48,587 INFO L225 Difference]: With dead ends: 9135 [2022-11-02 20:43:48,588 INFO L226 Difference]: Without dead ends: 9135 [2022-11-02 20:43:48,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:48,588 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 127 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:48,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 58 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:43:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2022-11-02 20:43:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 8559. [2022-11-02 20:43:48,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8559 states, 8227 states have (on average 2.866293910295369) internal successors, (23581), 8558 states have internal predecessors, (23581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 23581 transitions. [2022-11-02 20:43:48,895 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 23581 transitions. Word has length 14 [2022-11-02 20:43:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:48,896 INFO L495 AbstractCegarLoop]: Abstraction has 8559 states and 23581 transitions. [2022-11-02 20:43:48,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 23581 transitions. [2022-11-02 20:43:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:43:48,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:48,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:48,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:49,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:43:49,106 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:49,107 INFO L85 PathProgramCache]: Analyzing trace with hash -787406856, now seen corresponding path program 1 times [2022-11-02 20:43:49,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:49,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458418231] [2022-11-02 20:43:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:49,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:49,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458418231] [2022-11-02 20:43:49,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458418231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:49,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245965597] [2022-11-02 20:43:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:49,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:49,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:49,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:49,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:43:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:49,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:43:49,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:49,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:49,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245965597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:49,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:49,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:43:49,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527244230] [2022-11-02 20:43:49,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:43:49,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:43:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:49,331 INFO L87 Difference]: Start difference. First operand 8559 states and 23581 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:49,636 INFO L93 Difference]: Finished difference Result 8084 states and 21912 transitions. [2022-11-02 20:43:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:43:49,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:43:49,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:49,666 INFO L225 Difference]: With dead ends: 8084 [2022-11-02 20:43:49,667 INFO L226 Difference]: Without dead ends: 8084 [2022-11-02 20:43:49,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:49,668 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 115 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:49,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 66 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:43:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2022-11-02 20:43:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 7616. [2022-11-02 20:43:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7616 states, 7365 states have (on average 2.8811948404616428) internal successors, (21220), 7615 states have internal predecessors, (21220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 21220 transitions. [2022-11-02 20:43:49,839 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 21220 transitions. Word has length 14 [2022-11-02 20:43:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:49,840 INFO L495 AbstractCegarLoop]: Abstraction has 7616 states and 21220 transitions. [2022-11-02 20:43:49,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 21220 transitions. [2022-11-02 20:43:49,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:43:49,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:49,842 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:49,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:50,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:50,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1348290805, now seen corresponding path program 1 times [2022-11-02 20:43:50,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:50,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246471000] [2022-11-02 20:43:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:50,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:50,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246471000] [2022-11-02 20:43:50,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246471000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916440395] [2022-11-02 20:43:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:50,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:50,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:50,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:50,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:43:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:50,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:43:50,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:50,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:43:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:50,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:50,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-11-02 20:43:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:51,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916440395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:51,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:51,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-11-02 20:43:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364692646] [2022-11-02 20:43:51,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:51,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:43:51,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:43:51,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:43:51,019 INFO L87 Difference]: Start difference. First operand 7616 states and 21220 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:52,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:52,101 INFO L93 Difference]: Finished difference Result 10080 states and 27701 transitions. [2022-11-02 20:43:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:43:52,102 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:43:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:52,130 INFO L225 Difference]: With dead ends: 10080 [2022-11-02 20:43:52,130 INFO L226 Difference]: Without dead ends: 10080 [2022-11-02 20:43:52,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:43:52,131 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 583 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:52,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 137 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:43:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10080 states. [2022-11-02 20:43:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10080 to 8207. [2022-11-02 20:43:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8207 states, 7956 states have (on average 2.9191804927099043) internal successors, (23225), 8206 states have internal predecessors, (23225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8207 states to 8207 states and 23225 transitions. [2022-11-02 20:43:52,373 INFO L78 Accepts]: Start accepts. Automaton has 8207 states and 23225 transitions. Word has length 15 [2022-11-02 20:43:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:52,374 INFO L495 AbstractCegarLoop]: Abstraction has 8207 states and 23225 transitions. [2022-11-02 20:43:52,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 8207 states and 23225 transitions. [2022-11-02 20:43:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:43:52,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:52,376 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:52,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:43:52,591 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1348290754, now seen corresponding path program 1 times [2022-11-02 20:43:52,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:52,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859249686] [2022-11-02 20:43:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:52,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:53,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:53,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859249686] [2022-11-02 20:43:53,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859249686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:53,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961325924] [2022-11-02 20:43:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:53,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:53,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:53,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:53,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:43:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:53,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:43:53,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:53,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:43:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:53,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:53,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-02 20:43:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:53,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961325924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:53,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:53,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-11-02 20:43:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634908057] [2022-11-02 20:43:53,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:53,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:43:53,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:43:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:43:53,430 INFO L87 Difference]: Start difference. First operand 8207 states and 23225 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:54,430 INFO L93 Difference]: Finished difference Result 10064 states and 27530 transitions. [2022-11-02 20:43:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:43:54,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:43:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:54,465 INFO L225 Difference]: With dead ends: 10064 [2022-11-02 20:43:54,465 INFO L226 Difference]: Without dead ends: 10064 [2022-11-02 20:43:54,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:43:54,467 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 552 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:54,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 142 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:43:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-11-02 20:43:54,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 8191. [2022-11-02 20:43:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8191 states, 7940 states have (on average 2.9035264483627206) internal successors, (23054), 8190 states have internal predecessors, (23054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8191 states to 8191 states and 23054 transitions. [2022-11-02 20:43:54,667 INFO L78 Accepts]: Start accepts. Automaton has 8191 states and 23054 transitions. Word has length 15 [2022-11-02 20:43:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:54,668 INFO L495 AbstractCegarLoop]: Abstraction has 8191 states and 23054 transitions. [2022-11-02 20:43:54,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 8191 states and 23054 transitions. [2022-11-02 20:43:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:43:54,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:54,669 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:54,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:54,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:43:54,869 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:54,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1360192214, now seen corresponding path program 1 times [2022-11-02 20:43:54,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:54,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592195856] [2022-11-02 20:43:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:54,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:55,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:55,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592195856] [2022-11-02 20:43:55,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592195856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:55,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294054887] [2022-11-02 20:43:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:55,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:55,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:55,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:55,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:43:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:55,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:43:55,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:55,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:43:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:55,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:55,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-11-02 20:43:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:55,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294054887] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:55,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:55,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-11-02 20:43:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937179115] [2022-11-02 20:43:55,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:55,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:43:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:43:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:43:55,555 INFO L87 Difference]: Start difference. First operand 8191 states and 23054 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:56,350 INFO L93 Difference]: Finished difference Result 10865 states and 30082 transitions. [2022-11-02 20:43:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:43:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:43:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:56,376 INFO L225 Difference]: With dead ends: 10865 [2022-11-02 20:43:56,376 INFO L226 Difference]: Without dead ends: 10865 [2022-11-02 20:43:56,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:43:56,377 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 458 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:56,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 96 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:43:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states. [2022-11-02 20:43:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 8635. [2022-11-02 20:43:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8635 states, 8384 states have (on average 2.9277194656488548) internal successors, (24546), 8634 states have internal predecessors, (24546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8635 states to 8635 states and 24546 transitions. [2022-11-02 20:43:56,535 INFO L78 Accepts]: Start accepts. Automaton has 8635 states and 24546 transitions. Word has length 15 [2022-11-02 20:43:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:56,535 INFO L495 AbstractCegarLoop]: Abstraction has 8635 states and 24546 transitions. [2022-11-02 20:43:56,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states and 24546 transitions. [2022-11-02 20:43:56,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:43:56,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:56,537 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:56,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:56,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:43:56,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:56,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:56,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1360192365, now seen corresponding path program 1 times [2022-11-02 20:43:56,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:56,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437196876] [2022-11-02 20:43:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:56,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:57,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:57,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437196876] [2022-11-02 20:43:57,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437196876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:57,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408517065] [2022-11-02 20:43:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:57,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:57,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:57,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:57,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:43:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:43:57,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:57,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:43:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:57,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:57,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-02 20:43:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:57,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408517065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:57,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:57,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-11-02 20:43:57,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932443832] [2022-11-02 20:43:57,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:57,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:43:57,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:57,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:43:57,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:43:57,436 INFO L87 Difference]: Start difference. First operand 8635 states and 24546 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:58,474 INFO L93 Difference]: Finished difference Result 10849 states and 29913 transitions. [2022-11-02 20:43:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:43:58,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:43:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:58,513 INFO L225 Difference]: With dead ends: 10849 [2022-11-02 20:43:58,514 INFO L226 Difference]: Without dead ends: 10849 [2022-11-02 20:43:58,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:43:58,515 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 455 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:58,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 120 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:43:58,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10849 states. [2022-11-02 20:43:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10849 to 8474. [2022-11-02 20:43:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8474 states, 8223 states have (on average 2.9209534233248204) internal successors, (24019), 8473 states have internal predecessors, (24019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8474 states to 8474 states and 24019 transitions. [2022-11-02 20:43:58,758 INFO L78 Accepts]: Start accepts. Automaton has 8474 states and 24019 transitions. Word has length 15 [2022-11-02 20:43:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:58,758 INFO L495 AbstractCegarLoop]: Abstraction has 8474 states and 24019 transitions. [2022-11-02 20:43:58,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8474 states and 24019 transitions. [2022-11-02 20:43:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:43:58,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:58,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:58,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:58,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a3f127a-0880-4da0-944b-09dcea650003/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:43:58,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:43:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash -850649116, now seen corresponding path program 1 times [2022-11-02 20:43:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:58,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507641255] [2022-11-02 20:43:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:59,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:59,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507641255] [2022-11-02 20:43:59,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507641255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:59,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:59,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:43:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555816406] [2022-11-02 20:43:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:43:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:43:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:43:59,392 INFO L87 Difference]: Start difference. First operand 8474 states and 24019 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:00,630 INFO L93 Difference]: Finished difference Result 19046 states and 51365 transitions. [2022-11-02 20:44:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:44:00,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:00,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:00,679 INFO L225 Difference]: With dead ends: 19046 [2022-11-02 20:44:00,679 INFO L226 Difference]: Without dead ends: 19046 [2022-11-02 20:44:00,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:00,680 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 466 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:00,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 190 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:44:00,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19046 states. [2022-11-02 20:44:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19046 to 11599. [2022-11-02 20:44:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11599 states, 11348 states have (on average 3.0081071554458934) internal successors, (34136), 11598 states have internal predecessors, (34136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11599 states to 11599 states and 34136 transitions. [2022-11-02 20:44:00,932 INFO L78 Accepts]: Start accepts. Automaton has 11599 states and 34136 transitions. Word has length 16 [2022-11-02 20:44:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:00,933 INFO L495 AbstractCegarLoop]: Abstraction has 11599 states and 34136 transitions. [2022-11-02 20:44:00,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 11599 states and 34136 transitions. [2022-11-02 20:44:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:00,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:00,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:00,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:44:00,935 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash -850649065, now seen corresponding path program 1 times [2022-11-02 20:44:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:00,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827799952] [2022-11-02 20:44:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:01,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:01,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827799952] [2022-11-02 20:44:01,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827799952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:01,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:01,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429722163] [2022-11-02 20:44:01,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:01,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:01,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:01,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:01,371 INFO L87 Difference]: Start difference. First operand 11599 states and 34136 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:02,407 INFO L93 Difference]: Finished difference Result 16551 states and 45351 transitions. [2022-11-02 20:44:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:02,478 INFO L225 Difference]: With dead ends: 16551 [2022-11-02 20:44:02,479 INFO L226 Difference]: Without dead ends: 16551 [2022-11-02 20:44:02,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:02,480 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 396 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:02,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 174 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:44:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16551 states. [2022-11-02 20:44:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16551 to 11326. [2022-11-02 20:44:02,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11326 states, 11075 states have (on average 2.9979232505643343) internal successors, (33202), 11325 states have internal predecessors, (33202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11326 states to 11326 states and 33202 transitions. [2022-11-02 20:44:02,770 INFO L78 Accepts]: Start accepts. Automaton has 11326 states and 33202 transitions. Word has length 16 [2022-11-02 20:44:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:02,770 INFO L495 AbstractCegarLoop]: Abstraction has 11326 states and 33202 transitions. [2022-11-02 20:44:02,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11326 states and 33202 transitions. [2022-11-02 20:44:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:02,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:02,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:02,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:44:02,773 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1912727340, now seen corresponding path program 1 times [2022-11-02 20:44:02,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:02,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582887049] [2022-11-02 20:44:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:03,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:03,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582887049] [2022-11-02 20:44:03,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582887049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:03,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:03,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:03,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141930705] [2022-11-02 20:44:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:03,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:03,133 INFO L87 Difference]: Start difference. First operand 11326 states and 33202 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:04,195 INFO L93 Difference]: Finished difference Result 20133 states and 54947 transitions. [2022-11-02 20:44:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:04,269 INFO L225 Difference]: With dead ends: 20133 [2022-11-02 20:44:04,269 INFO L226 Difference]: Without dead ends: 20133 [2022-11-02 20:44:04,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:04,271 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 407 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:04,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 177 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:44:04,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20133 states. [2022-11-02 20:44:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20133 to 12223. [2022-11-02 20:44:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12223 states, 11972 states have (on average 2.9842131640494487) internal successors, (35727), 12222 states have internal predecessors, (35727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12223 states to 12223 states and 35727 transitions. [2022-11-02 20:44:04,571 INFO L78 Accepts]: Start accepts. Automaton has 12223 states and 35727 transitions. Word has length 16 [2022-11-02 20:44:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:04,572 INFO L495 AbstractCegarLoop]: Abstraction has 12223 states and 35727 transitions. [2022-11-02 20:44:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12223 states and 35727 transitions. [2022-11-02 20:44:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:04,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:04,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:44:04,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1912727491, now seen corresponding path program 1 times [2022-11-02 20:44:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:04,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074713133] [2022-11-02 20:44:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:04,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:04,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074713133] [2022-11-02 20:44:04,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074713133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:04,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:04,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794027753] [2022-11-02 20:44:04,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:04,947 INFO L87 Difference]: Start difference. First operand 12223 states and 35727 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:05,932 INFO L93 Difference]: Finished difference Result 20046 states and 54651 transitions. [2022-11-02 20:44:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:06,092 INFO L225 Difference]: With dead ends: 20046 [2022-11-02 20:44:06,092 INFO L226 Difference]: Without dead ends: 20046 [2022-11-02 20:44:06,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:06,093 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 439 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:06,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 177 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:44:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20046 states. [2022-11-02 20:44:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20046 to 11962. [2022-11-02 20:44:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11962 states, 11711 states have (on average 2.972504482964734) internal successors, (34811), 11961 states have internal predecessors, (34811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11962 states to 11962 states and 34811 transitions. [2022-11-02 20:44:06,373 INFO L78 Accepts]: Start accepts. Automaton has 11962 states and 34811 transitions. Word has length 16 [2022-11-02 20:44:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:06,373 INFO L495 AbstractCegarLoop]: Abstraction has 11962 states and 34811 transitions. [2022-11-02 20:44:06,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11962 states and 34811 transitions. [2022-11-02 20:44:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:06,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:06,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:44:06,376 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1288148368, now seen corresponding path program 2 times [2022-11-02 20:44:06,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:06,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077319444] [2022-11-02 20:44:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:06,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077319444] [2022-11-02 20:44:06,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077319444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:06,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:06,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:06,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095065073] [2022-11-02 20:44:06,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:06,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:06,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:06,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:06,730 INFO L87 Difference]: Start difference. First operand 11962 states and 34811 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:07,792 INFO L93 Difference]: Finished difference Result 18092 states and 50754 transitions. [2022-11-02 20:44:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:07,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:07,856 INFO L225 Difference]: With dead ends: 18092 [2022-11-02 20:44:07,857 INFO L226 Difference]: Without dead ends: 18092 [2022-11-02 20:44:07,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:07,858 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 382 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:07,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 179 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:44:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18092 states. [2022-11-02 20:44:08,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18092 to 12194. [2022-11-02 20:44:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12194 states, 11943 states have (on average 2.971950096290714) internal successors, (35494), 12193 states have internal predecessors, (35494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12194 states to 12194 states and 35494 transitions. [2022-11-02 20:44:08,282 INFO L78 Accepts]: Start accepts. Automaton has 12194 states and 35494 transitions. Word has length 16 [2022-11-02 20:44:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:08,282 INFO L495 AbstractCegarLoop]: Abstraction has 12194 states and 35494 transitions. [2022-11-02 20:44:08,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 12194 states and 35494 transitions. [2022-11-02 20:44:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:08,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:08,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:08,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:44:08,285 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1288148217, now seen corresponding path program 2 times [2022-11-02 20:44:08,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:08,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193776107] [2022-11-02 20:44:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:08,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:08,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:08,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193776107] [2022-11-02 20:44:08,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193776107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:08,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:08,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494628996] [2022-11-02 20:44:08,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:08,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:44:08,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:08,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:44:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:44:08,550 INFO L87 Difference]: Start difference. First operand 12194 states and 35494 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:09,843 INFO L93 Difference]: Finished difference Result 20109 states and 55713 transitions. [2022-11-02 20:44:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:44:09,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:09,905 INFO L225 Difference]: With dead ends: 20109 [2022-11-02 20:44:09,905 INFO L226 Difference]: Without dead ends: 20109 [2022-11-02 20:44:09,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:09,906 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 391 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:09,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 205 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:44:09,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20109 states. [2022-11-02 20:44:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20109 to 11434. [2022-11-02 20:44:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11434 states, 11183 states have (on average 2.9868550478404723) internal successors, (33402), 11433 states have internal predecessors, (33402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11434 states to 11434 states and 33402 transitions. [2022-11-02 20:44:10,337 INFO L78 Accepts]: Start accepts. Automaton has 11434 states and 33402 transitions. Word has length 16 [2022-11-02 20:44:10,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:10,338 INFO L495 AbstractCegarLoop]: Abstraction has 11434 states and 33402 transitions. [2022-11-02 20:44:10,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 11434 states and 33402 transitions. [2022-11-02 20:44:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:10,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:10,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:10,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:44:10,340 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1152949046, now seen corresponding path program 3 times [2022-11-02 20:44:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:10,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11791273] [2022-11-02 20:44:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11791273] [2022-11-02 20:44:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11791273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:10,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:10,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697249621] [2022-11-02 20:44:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:10,695 INFO L87 Difference]: Start difference. First operand 11434 states and 33402 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:11,982 INFO L93 Difference]: Finished difference Result 15714 states and 44203 transitions. [2022-11-02 20:44:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:44:11,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:12,020 INFO L225 Difference]: With dead ends: 15714 [2022-11-02 20:44:12,020 INFO L226 Difference]: Without dead ends: 15714 [2022-11-02 20:44:12,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:44:12,021 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 434 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:12,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 134 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:44:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15714 states. [2022-11-02 20:44:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15714 to 11613. [2022-11-02 20:44:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11613 states, 11362 states have (on average 2.980637211758493) internal successors, (33866), 11612 states have internal predecessors, (33866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11613 states to 11613 states and 33866 transitions. [2022-11-02 20:44:12,257 INFO L78 Accepts]: Start accepts. Automaton has 11613 states and 33866 transitions. Word has length 16 [2022-11-02 20:44:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:12,257 INFO L495 AbstractCegarLoop]: Abstraction has 11613 states and 33866 transitions. [2022-11-02 20:44:12,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 11613 states and 33866 transitions. [2022-11-02 20:44:12,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:12,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:12,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:12,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:44:12,259 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:12,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1152949197, now seen corresponding path program 3 times [2022-11-02 20:44:12,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:12,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687426377] [2022-11-02 20:44:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:12,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:12,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:12,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687426377] [2022-11-02 20:44:12,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687426377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:12,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:12,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:44:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693259536] [2022-11-02 20:44:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:12,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:44:12,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:44:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:44:12,978 INFO L87 Difference]: Start difference. First operand 11613 states and 33866 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:15,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:15,373 INFO L93 Difference]: Finished difference Result 13867 states and 39805 transitions. [2022-11-02 20:44:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:44:15,374 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:15,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:15,408 INFO L225 Difference]: With dead ends: 13867 [2022-11-02 20:44:15,408 INFO L226 Difference]: Without dead ends: 13867 [2022-11-02 20:44:15,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:44:15,409 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 414 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:15,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 131 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 20:44:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13867 states. [2022-11-02 20:44:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13867 to 12001. [2022-11-02 20:44:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12001 states, 11750 states have (on average 2.9833191489361703) internal successors, (35054), 12000 states have internal predecessors, (35054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 35054 transitions. [2022-11-02 20:44:15,623 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 35054 transitions. Word has length 16 [2022-11-02 20:44:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:15,624 INFO L495 AbstractCegarLoop]: Abstraction has 12001 states and 35054 transitions. [2022-11-02 20:44:15,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 35054 transitions. [2022-11-02 20:44:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:15,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:15,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:44:15,626 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash 96389406, now seen corresponding path program 2 times [2022-11-02 20:44:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:15,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341927915] [2022-11-02 20:44:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:16,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:16,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341927915] [2022-11-02 20:44:16,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341927915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:16,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:16,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522819475] [2022-11-02 20:44:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:16,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:16,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:16,043 INFO L87 Difference]: Start difference. First operand 12001 states and 35054 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:17,195 INFO L93 Difference]: Finished difference Result 20677 states and 56491 transitions. [2022-11-02 20:44:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:17,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:17,265 INFO L225 Difference]: With dead ends: 20677 [2022-11-02 20:44:17,265 INFO L226 Difference]: Without dead ends: 20677 [2022-11-02 20:44:17,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:17,266 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 436 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:17,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 174 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:44:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20677 states. [2022-11-02 20:44:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20677 to 12987. [2022-11-02 20:44:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12987 states, 12736 states have (on average 2.975266959798995) internal successors, (37893), 12986 states have internal predecessors, (37893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12987 states to 12987 states and 37893 transitions. [2022-11-02 20:44:17,675 INFO L78 Accepts]: Start accepts. Automaton has 12987 states and 37893 transitions. Word has length 16 [2022-11-02 20:44:17,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:17,676 INFO L495 AbstractCegarLoop]: Abstraction has 12987 states and 37893 transitions. [2022-11-02 20:44:17,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 12987 states and 37893 transitions. [2022-11-02 20:44:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:17,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:17,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:17,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:44:17,678 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:17,678 INFO L85 PathProgramCache]: Analyzing trace with hash 96389457, now seen corresponding path program 2 times [2022-11-02 20:44:17,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:17,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567272576] [2022-11-02 20:44:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:17,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:18,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:18,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567272576] [2022-11-02 20:44:18,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567272576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:18,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:18,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498834510] [2022-11-02 20:44:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:18,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:18,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:18,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:18,096 INFO L87 Difference]: Start difference. First operand 12987 states and 37893 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:19,562 INFO L93 Difference]: Finished difference Result 23083 states and 61859 transitions. [2022-11-02 20:44:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:44:19,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:19,649 INFO L225 Difference]: With dead ends: 23083 [2022-11-02 20:44:19,650 INFO L226 Difference]: Without dead ends: 23083 [2022-11-02 20:44:19,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:44:19,651 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 426 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:19,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 200 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:44:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23083 states. [2022-11-02 20:44:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23083 to 12574. [2022-11-02 20:44:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12574 states, 12323 states have (on average 2.969650247504666) internal successors, (36595), 12573 states have internal predecessors, (36595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12574 states to 12574 states and 36595 transitions. [2022-11-02 20:44:20,112 INFO L78 Accepts]: Start accepts. Automaton has 12574 states and 36595 transitions. Word has length 16 [2022-11-02 20:44:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:20,113 INFO L495 AbstractCegarLoop]: Abstraction has 12574 states and 36595 transitions. [2022-11-02 20:44:20,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 12574 states and 36595 transitions. [2022-11-02 20:44:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:20,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:20,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:20,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:44:20,116 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1435201434, now seen corresponding path program 4 times [2022-11-02 20:44:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:20,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84795495] [2022-11-02 20:44:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:20,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:20,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84795495] [2022-11-02 20:44:20,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84795495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:20,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:20,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110969029] [2022-11-02 20:44:20,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:20,548 INFO L87 Difference]: Start difference. First operand 12574 states and 36595 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:21,585 INFO L93 Difference]: Finished difference Result 17995 states and 49252 transitions. [2022-11-02 20:44:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:21,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:21,641 INFO L225 Difference]: With dead ends: 17995 [2022-11-02 20:44:21,641 INFO L226 Difference]: Without dead ends: 17995 [2022-11-02 20:44:21,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:21,642 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 412 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:21,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 176 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:44:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17995 states. [2022-11-02 20:44:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17995 to 12605. [2022-11-02 20:44:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12605 states, 12354 states have (on average 2.9747450218552696) internal successors, (36750), 12604 states have internal predecessors, (36750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12605 states to 12605 states and 36750 transitions. [2022-11-02 20:44:21,948 INFO L78 Accepts]: Start accepts. Automaton has 12605 states and 36750 transitions. Word has length 16 [2022-11-02 20:44:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:21,948 INFO L495 AbstractCegarLoop]: Abstraction has 12605 states and 36750 transitions. [2022-11-02 20:44:21,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12605 states and 36750 transitions. [2022-11-02 20:44:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:21,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:21,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:21,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:44:21,950 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -690057888, now seen corresponding path program 3 times [2022-11-02 20:44:21,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:21,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708225969] [2022-11-02 20:44:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:21,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708225969] [2022-11-02 20:44:22,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708225969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:22,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:22,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501304916] [2022-11-02 20:44:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:22,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:22,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:22,238 INFO L87 Difference]: Start difference. First operand 12605 states and 36750 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:23,306 INFO L93 Difference]: Finished difference Result 19046 states and 53789 transitions. [2022-11-02 20:44:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:23,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:23,374 INFO L225 Difference]: With dead ends: 19046 [2022-11-02 20:44:23,375 INFO L226 Difference]: Without dead ends: 19046 [2022-11-02 20:44:23,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:23,375 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 419 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:23,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 170 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:44:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19046 states. [2022-11-02 20:44:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19046 to 12907. [2022-11-02 20:44:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 12656 states have (on average 2.9780341340075855) internal successors, (37690), 12906 states have internal predecessors, (37690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 37690 transitions. [2022-11-02 20:44:23,758 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 37690 transitions. Word has length 16 [2022-11-02 20:44:23,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:23,759 INFO L495 AbstractCegarLoop]: Abstraction has 12907 states and 37690 transitions. [2022-11-02 20:44:23,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:23,759 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 37690 transitions. [2022-11-02 20:44:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:23,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:23,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:23,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:44:23,762 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:23,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash -690057837, now seen corresponding path program 3 times [2022-11-02 20:44:23,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:23,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822693976] [2022-11-02 20:44:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:24,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:24,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822693976] [2022-11-02 20:44:24,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822693976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:24,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:24,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:24,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332332626] [2022-11-02 20:44:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:24,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:24,092 INFO L87 Difference]: Start difference. First operand 12907 states and 37690 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:25,130 INFO L93 Difference]: Finished difference Result 18957 states and 53576 transitions. [2022-11-02 20:44:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:25,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:25,190 INFO L225 Difference]: With dead ends: 18957 [2022-11-02 20:44:25,190 INFO L226 Difference]: Without dead ends: 18957 [2022-11-02 20:44:25,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:25,191 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 376 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:25,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 170 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:44:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18957 states. [2022-11-02 20:44:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18957 to 12095. [2022-11-02 20:44:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12095 states, 11844 states have (on average 2.98919284025667) internal successors, (35404), 12094 states have internal predecessors, (35404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12095 states to 12095 states and 35404 transitions. [2022-11-02 20:44:25,537 INFO L78 Accepts]: Start accepts. Automaton has 12095 states and 35404 transitions. Word has length 16 [2022-11-02 20:44:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:25,537 INFO L495 AbstractCegarLoop]: Abstraction has 12095 states and 35404 transitions. [2022-11-02 20:44:25,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12095 states and 35404 transitions. [2022-11-02 20:44:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:25,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:25,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:25,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:44:25,540 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:25,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -783785204, now seen corresponding path program 4 times [2022-11-02 20:44:25,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:25,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310963034] [2022-11-02 20:44:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:26,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:26,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310963034] [2022-11-02 20:44:26,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310963034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:26,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:26,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:26,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224644338] [2022-11-02 20:44:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:26,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:26,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:26,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:26,082 INFO L87 Difference]: Start difference. First operand 12095 states and 35404 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:27,438 INFO L93 Difference]: Finished difference Result 15949 states and 45053 transitions. [2022-11-02 20:44:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:44:27,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:27,488 INFO L225 Difference]: With dead ends: 15949 [2022-11-02 20:44:27,488 INFO L226 Difference]: Without dead ends: 15949 [2022-11-02 20:44:27,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:44:27,489 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 393 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:27,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 157 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:44:27,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15949 states. [2022-11-02 20:44:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15949 to 12266. [2022-11-02 20:44:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12266 states, 12015 states have (on average 2.989679567207657) internal successors, (35921), 12265 states have internal predecessors, (35921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12266 states to 12266 states and 35921 transitions. [2022-11-02 20:44:27,824 INFO L78 Accepts]: Start accepts. Automaton has 12266 states and 35921 transitions. Word has length 16 [2022-11-02 20:44:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:27,825 INFO L495 AbstractCegarLoop]: Abstraction has 12266 states and 35921 transitions. [2022-11-02 20:44:27,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12266 states and 35921 transitions. [2022-11-02 20:44:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:27,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:27,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:27,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:44:27,827 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting writer_fnErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -783785153, now seen corresponding path program 4 times [2022-11-02 20:44:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:27,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895857700] [2022-11-02 20:44:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:28,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:28,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895857700] [2022-11-02 20:44:28,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895857700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:28,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:28,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295496363] [2022-11-02 20:44:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:28,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:28,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:28,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:28,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:28,247 INFO L87 Difference]: Start difference. First operand 12266 states and 35921 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:29,339 INFO L93 Difference]: Finished difference Result 14826 states and 42427 transitions. [2022-11-02 20:44:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:44:29,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:29,386 INFO L225 Difference]: With dead ends: 14826 [2022-11-02 20:44:29,386 INFO L226 Difference]: Without dead ends: 14826 [2022-11-02 20:44:29,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:44:29,387 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 362 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:29,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 131 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:44:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14826 states. [2022-11-02 20:44:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14826 to 11940. [2022-11-02 20:44:29,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11689 states have (on average 2.9899050389254853) internal successors, (34949), 11939 states have internal predecessors, (34949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 34949 transitions. [2022-11-02 20:44:29,690 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 34949 transitions. Word has length 16 [2022-11-02 20:44:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:29,691 INFO L495 AbstractCegarLoop]: Abstraction has 11940 states and 34949 transitions. [2022-11-02 20:44:29,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 34949 transitions. [2022-11-02 20:44:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:29,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:29,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:44:29,693 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash -805124084, now seen corresponding path program 1 times [2022-11-02 20:44:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:29,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320084156] [2022-11-02 20:44:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:29,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:29,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320084156] [2022-11-02 20:44:29,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320084156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:29,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:29,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:29,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097608888] [2022-11-02 20:44:29,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:29,952 INFO L87 Difference]: Start difference. First operand 11940 states and 34949 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:30,535 INFO L93 Difference]: Finished difference Result 13424 states and 38745 transitions. [2022-11-02 20:44:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:44:30,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:30,576 INFO L225 Difference]: With dead ends: 13424 [2022-11-02 20:44:30,576 INFO L226 Difference]: Without dead ends: 13424 [2022-11-02 20:44:30,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:44:30,577 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 83 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:30,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 16 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:44:30,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13424 states. [2022-11-02 20:44:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13424 to 11939. [2022-11-02 20:44:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11939 states, 11688 states have (on average 2.989989733059548) internal successors, (34947), 11938 states have internal predecessors, (34947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11939 states to 11939 states and 34947 transitions. [2022-11-02 20:44:30,864 INFO L78 Accepts]: Start accepts. Automaton has 11939 states and 34947 transitions. Word has length 16 [2022-11-02 20:44:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:30,864 INFO L495 AbstractCegarLoop]: Abstraction has 11939 states and 34947 transitions. [2022-11-02 20:44:30,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand 11939 states and 34947 transitions. [2022-11-02 20:44:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:44:30,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:30,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:30,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:44:30,866 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:30,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:30,867 INFO L85 PathProgramCache]: Analyzing trace with hash -805124085, now seen corresponding path program 1 times [2022-11-02 20:44:30,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:30,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203949877] [2022-11-02 20:44:30,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:30,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:31,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203949877] [2022-11-02 20:44:31,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203949877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:31,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:31,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:44:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104160049] [2022-11-02 20:44:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:31,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:44:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:44:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:44:31,123 INFO L87 Difference]: Start difference. First operand 11939 states and 34947 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:31,662 INFO L93 Difference]: Finished difference Result 13409 states and 38718 transitions. [2022-11-02 20:44:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:44:31,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:44:31,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:31,705 INFO L225 Difference]: With dead ends: 13409 [2022-11-02 20:44:31,705 INFO L226 Difference]: Without dead ends: 13409 [2022-11-02 20:44:31,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:44:31,706 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 77 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:31,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 18 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:44:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13409 states. [2022-11-02 20:44:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13409 to 11938. [2022-11-02 20:44:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11938 states, 11687 states have (on average 2.990074441687345) internal successors, (34945), 11937 states have internal predecessors, (34945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11938 states to 11938 states and 34945 transitions. [2022-11-02 20:44:31,998 INFO L78 Accepts]: Start accepts. Automaton has 11938 states and 34945 transitions. Word has length 16 [2022-11-02 20:44:31,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:31,999 INFO L495 AbstractCegarLoop]: Abstraction has 11938 states and 34945 transitions. [2022-11-02 20:44:31,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 11938 states and 34945 transitions. [2022-11-02 20:44:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:44:32,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:32,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:32,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:44:32,001 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:32,002 INFO L85 PathProgramCache]: Analyzing trace with hash -861610028, now seen corresponding path program 1 times [2022-11-02 20:44:32,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:32,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762910645] [2022-11-02 20:44:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:32,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:32,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762910645] [2022-11-02 20:44:32,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762910645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:32,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:32,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:44:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819041081] [2022-11-02 20:44:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:44:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:44:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:44:32,369 INFO L87 Difference]: Start difference. First operand 11938 states and 34945 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:33,195 INFO L93 Difference]: Finished difference Result 14251 states and 41007 transitions. [2022-11-02 20:44:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:44:33,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:44:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:33,233 INFO L225 Difference]: With dead ends: 14251 [2022-11-02 20:44:33,234 INFO L226 Difference]: Without dead ends: 14251 [2022-11-02 20:44:33,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:33,234 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 221 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:33,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 17 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:44:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14251 states. [2022-11-02 20:44:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14251 to 12445. [2022-11-02 20:44:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12445 states, 12194 states have (on average 2.985156634410366) internal successors, (36401), 12444 states have internal predecessors, (36401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:33,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12445 states to 12445 states and 36401 transitions. [2022-11-02 20:44:33,455 INFO L78 Accepts]: Start accepts. Automaton has 12445 states and 36401 transitions. Word has length 17 [2022-11-02 20:44:33,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:33,456 INFO L495 AbstractCegarLoop]: Abstraction has 12445 states and 36401 transitions. [2022-11-02 20:44:33,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 12445 states and 36401 transitions. [2022-11-02 20:44:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:44:33,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:33,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:33,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:44:33,458 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash -861610029, now seen corresponding path program 1 times [2022-11-02 20:44:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:33,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098791334] [2022-11-02 20:44:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:33,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:33,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098791334] [2022-11-02 20:44:33,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098791334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:33,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:33,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:44:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156446616] [2022-11-02 20:44:33,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:33,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:44:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:44:33,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:44:33,739 INFO L87 Difference]: Start difference. First operand 12445 states and 36401 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:34,566 INFO L93 Difference]: Finished difference Result 14221 states and 40919 transitions. [2022-11-02 20:44:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:44:34,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:44:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:34,611 INFO L225 Difference]: With dead ends: 14221 [2022-11-02 20:44:34,611 INFO L226 Difference]: Without dead ends: 14221 [2022-11-02 20:44:34,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:34,612 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 273 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:34,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 13 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:44:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14221 states. [2022-11-02 20:44:34,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14221 to 12445. [2022-11-02 20:44:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12445 states, 12194 states have (on average 2.9819583401672953) internal successors, (36362), 12444 states have internal predecessors, (36362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12445 states to 12445 states and 36362 transitions. [2022-11-02 20:44:34,927 INFO L78 Accepts]: Start accepts. Automaton has 12445 states and 36362 transitions. Word has length 17 [2022-11-02 20:44:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:34,927 INFO L495 AbstractCegarLoop]: Abstraction has 12445 states and 36362 transitions. [2022-11-02 20:44:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 12445 states and 36362 transitions. [2022-11-02 20:44:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:44:34,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:34,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:34,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:44:34,930 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1266977768, now seen corresponding path program 2 times [2022-11-02 20:44:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:34,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812748324] [2022-11-02 20:44:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:34,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:35,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:35,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812748324] [2022-11-02 20:44:35,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812748324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:35,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:35,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:44:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033752723] [2022-11-02 20:44:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:35,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:44:35,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:44:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:44:35,219 INFO L87 Difference]: Start difference. First operand 12445 states and 36362 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:36,154 INFO L93 Difference]: Finished difference Result 14377 states and 41409 transitions. [2022-11-02 20:44:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:44:36,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:44:36,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:36,201 INFO L225 Difference]: With dead ends: 14377 [2022-11-02 20:44:36,201 INFO L226 Difference]: Without dead ends: 14377 [2022-11-02 20:44:36,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:44:36,202 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 240 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:36,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 15 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:44:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14377 states. [2022-11-02 20:44:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14377 to 12613. [2022-11-02 20:44:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12613 states, 12362 states have (on average 2.9827697783530174) internal successors, (36873), 12612 states have internal predecessors, (36873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12613 states to 12613 states and 36873 transitions. [2022-11-02 20:44:36,521 INFO L78 Accepts]: Start accepts. Automaton has 12613 states and 36873 transitions. Word has length 17 [2022-11-02 20:44:36,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:36,521 INFO L495 AbstractCegarLoop]: Abstraction has 12613 states and 36873 transitions. [2022-11-02 20:44:36,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 12613 states and 36873 transitions. [2022-11-02 20:44:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:44:36,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:36,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:36,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 20:44:36,524 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-02 20:44:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1266977769, now seen corresponding path program 2 times [2022-11-02 20:44:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:36,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638133375] [2022-11-02 20:44:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:36,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638133375] [2022-11-02 20:44:36,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638133375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:36,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:36,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:44:36,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629933815] [2022-11-02 20:44:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:36,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:44:36,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:44:36,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:44:36,843 INFO L87 Difference]: Start difference. First operand 12613 states and 36873 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:37,858 INFO L93 Difference]: Finished difference Result 14347 states and 41321 transitions. [2022-11-02 20:44:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:44:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:44:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted.