./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:41:36,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:41:36,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:41:36,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:41:36,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:41:36,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:41:36,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:41:36,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:41:36,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:41:36,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:41:36,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:41:36,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:41:36,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:41:36,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:41:36,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:41:36,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:41:36,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:41:36,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:41:36,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:41:36,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:41:36,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:41:36,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:41:36,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:41:36,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:41:36,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:41:36,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:41:36,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:41:36,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:41:36,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:41:36,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:41:36,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:41:36,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:41:36,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:41:36,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:41:36,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:41:36,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:41:36,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:41:36,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:41:36,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:41:36,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:41:36,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:41:36,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 08:41:36,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:41:36,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:41:36,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:41:36,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:41:36,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:41:36,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:41:36,466 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:41:36,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:41:36,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:41:36,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:41:36,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:41:36,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:41:36,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:41:36,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:41:36,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:41:36,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:41:36,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:41:36,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:41:36,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:41:36,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:41:36,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:41:36,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:41:36,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:41:36,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:41:36,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:41:36,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:41:36,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:41:36,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:41:36,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:41:36,475 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_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2021-11-09 08:41:36,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:41:36,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:41:36,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:41:36,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:41:36,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:41:36,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-09 08:41:36,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/data/d3c247fa9/d6f8cf1262e24b1e9b45f843b2443ea5/FLAGbb6e2f6a8 [2021-11-09 08:41:38,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:41:38,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-09 08:41:38,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/data/d3c247fa9/d6f8cf1262e24b1e9b45f843b2443ea5/FLAGbb6e2f6a8 [2021-11-09 08:41:38,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/data/d3c247fa9/d6f8cf1262e24b1e9b45f843b2443ea5 [2021-11-09 08:41:38,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:41:38,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:41:38,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:41:38,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:41:38,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:41:38,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:41:38" (1/1) ... [2021-11-09 08:41:38,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0bf494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:38, skipping insertion in model container [2021-11-09 08:41:38,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:41:38" (1/1) ... [2021-11-09 08:41:38,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:41:38,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:41:38,971 WARN L228 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_9fd11f2d-98a6-4567-82c2-552634ec3b62/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-09 08:41:38,985 WARN L228 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_9fd11f2d-98a6-4567-82c2-552634ec3b62/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-09 08:41:39,015 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 08:41:39,032 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 08:41:40,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,155 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:40,748 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 08:41:40,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 08:41:40,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 08:41:40,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 08:41:40,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 08:41:40,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 08:41:40,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 08:41:40,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 08:41:40,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 08:41:40,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 08:41:41,096 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 08:41:41,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:41:41,504 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:41:41,541 WARN L228 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_9fd11f2d-98a6-4567-82c2-552634ec3b62/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-09 08:41:41,542 WARN L228 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_9fd11f2d-98a6-4567-82c2-552634ec3b62/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-09 08:41:41,546 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-09 08:41:41,547 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-09 08:41:41,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,608 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-09 08:41:41,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-09 08:41:41,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-09 08:41:41,676 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-09 08:41:41,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-09 08:41:41,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-09 08:41:41,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-09 08:41:41,682 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-09 08:41:41,683 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-09 08:41:41,684 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-09 08:41:41,724 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-09 08:41:41,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-09 08:41:41,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:41:42,289 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:41:42,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42 WrapperNode [2021-11-09 08:41:42,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:41:42,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:41:42,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:41:42,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:41:42,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:41:42,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:41:42,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:41:42,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:41:42,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:41:42,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:41:42,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:41:42,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:41:42,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (1/1) ... [2021-11-09 08:41:42,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:41:42,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:41:42,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:41:42,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fd11f2d-98a6-4567-82c2-552634ec3b62/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:41:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:41:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 08:41:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:41:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:41:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:41:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:41:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:41:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:41:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 08:41:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 08:41:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:41:55,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:41:55,758 INFO L299 CfgBuilder]: Removed 74 assume(true) statements. [2021-11-09 08:41:55,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:41:55 BoogieIcfgContainer [2021-11-09 08:41:55,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:41:55,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:41:55,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:41:55,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:41:55,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:41:38" (1/3) ... [2021-11-09 08:41:55,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddcd2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:41:55, skipping insertion in model container [2021-11-09 08:41:55,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:41:42" (2/3) ... [2021-11-09 08:41:55,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddcd2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:41:55, skipping insertion in model container [2021-11-09 08:41:55,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:41:55" (3/3) ... [2021-11-09 08:41:55,771 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2021-11-09 08:41:55,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:41:55,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-09 08:41:55,840 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:41:55,847 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:41:55,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-09 08:41:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 137 states have (on average 1.4817518248175183) internal successors, (203), 148 states have internal predecessors, (203), 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) [2021-11-09 08:41:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 08:41:55,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:55,880 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:55,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:41:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash -324613171, now seen corresponding path program 1 times [2021-11-09 08:41:55,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:55,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788700163] [2021-11-09 08:41:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:55,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:56,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:56,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788700163] [2021-11-09 08:41:56,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788700163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:56,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:56,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:41:56,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069905241] [2021-11-09 08:41:56,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:41:56,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:41:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:41:56,884 INFO L87 Difference]: Start difference. First operand has 149 states, 137 states have (on average 1.4817518248175183) internal successors, (203), 148 states have internal predecessors, (203), 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 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-11-09 08:41:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:56,947 INFO L93 Difference]: Finished difference Result 294 states and 401 transitions. [2021-11-09 08:41:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:41:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2021-11-09 08:41:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:56,965 INFO L225 Difference]: With dead ends: 294 [2021-11-09 08:41:56,966 INFO L226 Difference]: Without dead ends: 142 [2021-11-09 08:41:56,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:41:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-09 08:41:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-09 08:41:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 131 states have (on average 1.3511450381679388) internal successors, (177), 141 states have internal predecessors, (177), 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) [2021-11-09 08:41:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 177 transitions. [2021-11-09 08:41:57,037 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 177 transitions. Word has length 29 [2021-11-09 08:41:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:57,038 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 177 transitions. [2021-11-09 08:41:57,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-11-09 08:41:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 177 transitions. [2021-11-09 08:41:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-09 08:41:57,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:57,046 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:57,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:41:57,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:41:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash 924018381, now seen corresponding path program 1 times [2021-11-09 08:41:57,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:57,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589531690] [2021-11-09 08:41:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:57,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:57,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:57,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589531690] [2021-11-09 08:41:57,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589531690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:57,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:57,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:41:57,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675096506] [2021-11-09 08:41:57,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:41:57,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:57,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:41:57,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:41:57,572 INFO L87 Difference]: Start difference. First operand 142 states and 177 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-09 08:41:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:57,723 INFO L93 Difference]: Finished difference Result 258 states and 320 transitions. [2021-11-09 08:41:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:41:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2021-11-09 08:41:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:57,727 INFO L225 Difference]: With dead ends: 258 [2021-11-09 08:41:57,727 INFO L226 Difference]: Without dead ends: 142 [2021-11-09 08:41:57,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:41:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-09 08:41:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-11-09 08:41:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 131 states have (on average 1.3282442748091603) internal successors, (174), 141 states have internal predecessors, (174), 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) [2021-11-09 08:41:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 174 transitions. [2021-11-09 08:41:57,748 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 174 transitions. Word has length 29 [2021-11-09 08:41:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:57,748 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 174 transitions. [2021-11-09 08:41:57,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-09 08:41:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 174 transitions. [2021-11-09 08:41:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 08:41:57,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:57,752 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:57,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:41:57,753 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:41:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash -730987477, now seen corresponding path program 1 times [2021-11-09 08:41:57,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:57,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609209099] [2021-11-09 08:41:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:57,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:58,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:58,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609209099] [2021-11-09 08:41:58,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609209099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:58,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:58,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:41:58,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647201804] [2021-11-09 08:41:58,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:41:58,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:41:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:41:58,227 INFO L87 Difference]: Start difference. First operand 142 states and 174 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-09 08:41:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:58,457 INFO L93 Difference]: Finished difference Result 289 states and 358 transitions. [2021-11-09 08:41:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:41:58,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-09 08:41:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:58,460 INFO L225 Difference]: With dead ends: 289 [2021-11-09 08:41:58,460 INFO L226 Difference]: Without dead ends: 172 [2021-11-09 08:41:58,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:41:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-09 08:41:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 148. [2021-11-09 08:41:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 137 states have (on average 1.313868613138686) internal successors, (180), 147 states have internal predecessors, (180), 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) [2021-11-09 08:41:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 180 transitions. [2021-11-09 08:41:58,474 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 180 transitions. Word has length 41 [2021-11-09 08:41:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:58,474 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 180 transitions. [2021-11-09 08:41:58,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-09 08:41:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 180 transitions. [2021-11-09 08:41:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 08:41:58,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:58,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:58,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:41:58,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:41:58,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash -793027091, now seen corresponding path program 1 times [2021-11-09 08:41:58,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:58,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683956384] [2021-11-09 08:41:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:58,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:58,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:58,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683956384] [2021-11-09 08:41:58,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683956384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:58,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:58,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:41:58,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706841284] [2021-11-09 08:41:58,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:41:58,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:41:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:41:58,859 INFO L87 Difference]: Start difference. First operand 148 states and 180 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-09 08:41:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:41:58,891 INFO L93 Difference]: Finished difference Result 231 states and 276 transitions. [2021-11-09 08:41:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:41:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-09 08:41:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:41:58,894 INFO L225 Difference]: With dead ends: 231 [2021-11-09 08:41:58,894 INFO L226 Difference]: Without dead ends: 148 [2021-11-09 08:41:58,895 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:41:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-09 08:41:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-09 08:41:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 137 states have (on average 1.3065693430656935) internal successors, (179), 147 states have internal predecessors, (179), 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) [2021-11-09 08:41:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 179 transitions. [2021-11-09 08:41:58,904 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 179 transitions. Word has length 41 [2021-11-09 08:41:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:41:58,905 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 179 transitions. [2021-11-09 08:41:58,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-11-09 08:41:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 179 transitions. [2021-11-09 08:41:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-09 08:41:58,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:41:58,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:41:58,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:41:58,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:41:58,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:41:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 713904840, now seen corresponding path program 1 times [2021-11-09 08:41:58,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:41:58,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024244289] [2021-11-09 08:41:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:41:58,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:41:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:41:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:41:59,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:41:59,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024244289] [2021-11-09 08:41:59,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024244289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:41:59,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:41:59,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:41:59,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190041433] [2021-11-09 08:41:59,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:41:59,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:41:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:41:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:41:59,931 INFO L87 Difference]: Start difference. First operand 148 states and 179 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-11-09 08:42:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:00,513 INFO L93 Difference]: Finished difference Result 225 states and 264 transitions. [2021-11-09 08:42:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:42:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2021-11-09 08:42:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:00,515 INFO L225 Difference]: With dead ends: 225 [2021-11-09 08:42:00,516 INFO L226 Difference]: Without dead ends: 221 [2021-11-09 08:42:00,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:42:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-09 08:42:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 156. [2021-11-09 08:42:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 145 states have (on average 1.289655172413793) internal successors, (187), 155 states have internal predecessors, (187), 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) [2021-11-09 08:42:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2021-11-09 08:42:00,546 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 43 [2021-11-09 08:42:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:00,547 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2021-11-09 08:42:00,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-11-09 08:42:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2021-11-09 08:42:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 08:42:00,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:00,555 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:00,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:42:00,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:00,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1136209088, now seen corresponding path program 1 times [2021-11-09 08:42:00,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:00,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949087706] [2021-11-09 08:42:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:00,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:02,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:02,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949087706] [2021-11-09 08:42:02,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949087706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:02,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:02,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:42:02,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671910547] [2021-11-09 08:42:02,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:42:02,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:42:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:42:02,285 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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) [2021-11-09 08:42:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:10,389 INFO L93 Difference]: Finished difference Result 299 states and 359 transitions. [2021-11-09 08:42:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:42:10,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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 47 [2021-11-09 08:42:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:10,393 INFO L225 Difference]: With dead ends: 299 [2021-11-09 08:42:10,393 INFO L226 Difference]: Without dead ends: 205 [2021-11-09 08:42:10,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:42:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-09 08:42:10,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 178. [2021-11-09 08:42:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 167 states have (on average 1.2874251497005988) internal successors, (215), 177 states have internal predecessors, (215), 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) [2021-11-09 08:42:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 215 transitions. [2021-11-09 08:42:10,426 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 215 transitions. Word has length 47 [2021-11-09 08:42:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:10,430 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 215 transitions. [2021-11-09 08:42:10,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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) [2021-11-09 08:42:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 215 transitions. [2021-11-09 08:42:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 08:42:10,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:10,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:10,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:42:10,442 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash 343490267, now seen corresponding path program 1 times [2021-11-09 08:42:10,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:10,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237633715] [2021-11-09 08:42:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:10,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:12,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:12,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237633715] [2021-11-09 08:42:12,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237633715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:12,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:12,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:42:12,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769145988] [2021-11-09 08:42:12,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:42:12,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:42:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:42:12,357 INFO L87 Difference]: Start difference. First operand 178 states and 215 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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) [2021-11-09 08:42:28,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:28,706 INFO L93 Difference]: Finished difference Result 493 states and 600 transitions. [2021-11-09 08:42:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 08:42:28,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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 50 [2021-11-09 08:42:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:28,710 INFO L225 Difference]: With dead ends: 493 [2021-11-09 08:42:28,710 INFO L226 Difference]: Without dead ends: 399 [2021-11-09 08:42:28,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-11-09 08:42:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-09 08:42:28,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 176. [2021-11-09 08:42:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 165 states have (on average 1.284848484848485) internal successors, (212), 175 states have internal predecessors, (212), 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) [2021-11-09 08:42:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 212 transitions. [2021-11-09 08:42:28,724 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 212 transitions. Word has length 50 [2021-11-09 08:42:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:28,725 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 212 transitions. [2021-11-09 08:42:28,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 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) [2021-11-09 08:42:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 212 transitions. [2021-11-09 08:42:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 08:42:28,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:28,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:28,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:42:28,727 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:28,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 367795429, now seen corresponding path program 1 times [2021-11-09 08:42:28,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:28,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279997660] [2021-11-09 08:42:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:28,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:30,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:30,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279997660] [2021-11-09 08:42:30,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279997660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:30,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:30,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:42:30,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909220116] [2021-11-09 08:42:30,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:42:30,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:42:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:42:30,059 INFO L87 Difference]: Start difference. First operand 176 states and 212 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-11-09 08:42:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:30,531 INFO L93 Difference]: Finished difference Result 403 states and 475 transitions. [2021-11-09 08:42:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:42:30,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-11-09 08:42:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:30,534 INFO L225 Difference]: With dead ends: 403 [2021-11-09 08:42:30,534 INFO L226 Difference]: Without dead ends: 243 [2021-11-09 08:42:30,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:42:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-09 08:42:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 176. [2021-11-09 08:42:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 165 states have (on average 1.2666666666666666) internal successors, (209), 175 states have internal predecessors, (209), 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) [2021-11-09 08:42:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 209 transitions. [2021-11-09 08:42:30,547 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 209 transitions. Word has length 54 [2021-11-09 08:42:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:30,548 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 209 transitions. [2021-11-09 08:42:30,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-11-09 08:42:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 209 transitions. [2021-11-09 08:42:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 08:42:30,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:30,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:30,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:42:30,552 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1067867056, now seen corresponding path program 1 times [2021-11-09 08:42:30,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:30,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733434419] [2021-11-09 08:42:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:30,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:31,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:31,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733434419] [2021-11-09 08:42:31,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733434419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:31,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:31,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:42:31,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754377777] [2021-11-09 08:42:31,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:42:31,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:42:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:42:31,352 INFO L87 Difference]: Start difference. First operand 176 states and 209 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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) [2021-11-09 08:42:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:31,748 INFO L93 Difference]: Finished difference Result 266 states and 307 transitions. [2021-11-09 08:42:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:42:31,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 55 [2021-11-09 08:42:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:31,752 INFO L225 Difference]: With dead ends: 266 [2021-11-09 08:42:31,752 INFO L226 Difference]: Without dead ends: 264 [2021-11-09 08:42:31,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:42:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-09 08:42:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 180. [2021-11-09 08:42:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 169 states have (on average 1.2603550295857988) internal successors, (213), 179 states have internal predecessors, (213), 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) [2021-11-09 08:42:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 213 transitions. [2021-11-09 08:42:31,766 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 213 transitions. Word has length 55 [2021-11-09 08:42:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:31,766 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 213 transitions. [2021-11-09 08:42:31,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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) [2021-11-09 08:42:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 213 transitions. [2021-11-09 08:42:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 08:42:31,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:31,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:31,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:42:31,769 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash -574661108, now seen corresponding path program 1 times [2021-11-09 08:42:31,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:31,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517596033] [2021-11-09 08:42:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:31,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:33,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:33,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517596033] [2021-11-09 08:42:33,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517596033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:33,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:33,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:42:33,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073355428] [2021-11-09 08:42:33,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:42:33,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:42:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:42:33,055 INFO L87 Difference]: Start difference. First operand 180 states and 213 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-11-09 08:42:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:36,529 INFO L93 Difference]: Finished difference Result 599 states and 699 transitions. [2021-11-09 08:42:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:42:36,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-11-09 08:42:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:36,534 INFO L225 Difference]: With dead ends: 599 [2021-11-09 08:42:36,534 INFO L226 Difference]: Without dead ends: 459 [2021-11-09 08:42:36,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:42:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-09 08:42:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 192. [2021-11-09 08:42:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 181 states have (on average 1.2541436464088398) internal successors, (227), 191 states have internal predecessors, (227), 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) [2021-11-09 08:42:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 227 transitions. [2021-11-09 08:42:36,550 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 227 transitions. Word has length 56 [2021-11-09 08:42:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:36,551 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 227 transitions. [2021-11-09 08:42:36,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-11-09 08:42:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 227 transitions. [2021-11-09 08:42:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 08:42:36,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:36,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:36,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:42:36,553 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1124541866, now seen corresponding path program 1 times [2021-11-09 08:42:36,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:36,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998240159] [2021-11-09 08:42:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:36,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:40,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:40,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998240159] [2021-11-09 08:42:40,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998240159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:40,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:40,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:42:40,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972229879] [2021-11-09 08:42:40,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:42:40,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:42:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:42:40,834 INFO L87 Difference]: Start difference. First operand 192 states and 227 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 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) [2021-11-09 08:42:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:46,248 INFO L93 Difference]: Finished difference Result 331 states and 390 transitions. [2021-11-09 08:42:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 08:42:46,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 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 59 [2021-11-09 08:42:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:46,251 INFO L225 Difference]: With dead ends: 331 [2021-11-09 08:42:46,251 INFO L226 Difference]: Without dead ends: 213 [2021-11-09 08:42:46,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:42:46,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-09 08:42:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 192. [2021-11-09 08:42:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 181 states have (on average 1.2486187845303867) internal successors, (226), 191 states have internal predecessors, (226), 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) [2021-11-09 08:42:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 226 transitions. [2021-11-09 08:42:46,265 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 226 transitions. Word has length 59 [2021-11-09 08:42:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:46,266 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 226 transitions. [2021-11-09 08:42:46,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 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) [2021-11-09 08:42:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 226 transitions. [2021-11-09 08:42:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:42:46,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:46,267 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:46,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:42:46,268 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash 700643131, now seen corresponding path program 1 times [2021-11-09 08:42:46,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:46,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973824271] [2021-11-09 08:42:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:46,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:47,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:47,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973824271] [2021-11-09 08:42:47,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973824271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:47,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:47,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:42:47,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744731810] [2021-11-09 08:42:47,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:42:47,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:47,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:42:47,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:42:47,227 INFO L87 Difference]: Start difference. First operand 192 states and 226 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2021-11-09 08:42:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:52,373 INFO L93 Difference]: Finished difference Result 544 states and 638 transitions. [2021-11-09 08:42:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:42:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2021-11-09 08:42:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:52,376 INFO L225 Difference]: With dead ends: 544 [2021-11-09 08:42:52,376 INFO L226 Difference]: Without dead ends: 375 [2021-11-09 08:42:52,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:42:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-09 08:42:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 219. [2021-11-09 08:42:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 208 states have (on average 1.2451923076923077) internal successors, (259), 218 states have internal predecessors, (259), 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) [2021-11-09 08:42:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2021-11-09 08:42:52,391 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 62 [2021-11-09 08:42:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:52,392 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2021-11-09 08:42:52,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2021-11-09 08:42:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2021-11-09 08:42:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:42:52,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:52,394 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:52,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:42:52,394 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1129889993, now seen corresponding path program 1 times [2021-11-09 08:42:52,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:52,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423685791] [2021-11-09 08:42:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:52,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:52,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:52,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423685791] [2021-11-09 08:42:52,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423685791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:52,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:52,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:42:52,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276596629] [2021-11-09 08:42:52,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:42:52,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:42:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:42:52,671 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-09 08:42:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:42:52,854 INFO L93 Difference]: Finished difference Result 419 states and 494 transitions. [2021-11-09 08:42:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:42:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-11-09 08:42:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:42:52,856 INFO L225 Difference]: With dead ends: 419 [2021-11-09 08:42:52,857 INFO L226 Difference]: Without dead ends: 211 [2021-11-09 08:42:52,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:42:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-09 08:42:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2021-11-09 08:42:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 194 states have (on average 1.211340206185567) internal successors, (235), 204 states have internal predecessors, (235), 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) [2021-11-09 08:42:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2021-11-09 08:42:52,870 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 62 [2021-11-09 08:42:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:42:52,871 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2021-11-09 08:42:52,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-09 08:42:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2021-11-09 08:42:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:42:52,879 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:42:52,879 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:42:52,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:42:52,880 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:42:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:42:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1686614849, now seen corresponding path program 1 times [2021-11-09 08:42:52,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:42:52,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653326951] [2021-11-09 08:42:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:42:52,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:42:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:42:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:55,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:42:55,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653326951] [2021-11-09 08:42:55,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653326951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:55,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:55,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-09 08:42:55,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033015284] [2021-11-09 08:42:55,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 08:42:55,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:42:55,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 08:42:55,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:42:55,345 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 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) [2021-11-09 08:43:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:10,751 INFO L93 Difference]: Finished difference Result 469 states and 538 transitions. [2021-11-09 08:43:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:43:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 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 62 [2021-11-09 08:43:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:10,754 INFO L225 Difference]: With dead ends: 469 [2021-11-09 08:43:10,754 INFO L226 Difference]: Without dead ends: 316 [2021-11-09 08:43:10,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2021-11-09 08:43:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-09 08:43:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 205. [2021-11-09 08:43:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 194 states have (on average 1.211340206185567) internal successors, (235), 204 states have internal predecessors, (235), 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) [2021-11-09 08:43:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2021-11-09 08:43:10,769 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 62 [2021-11-09 08:43:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:10,770 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2021-11-09 08:43:10,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 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) [2021-11-09 08:43:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2021-11-09 08:43:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:43:10,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:10,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:10,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 08:43:10,773 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:43:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1262968127, now seen corresponding path program 1 times [2021-11-09 08:43:10,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:10,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287596894] [2021-11-09 08:43:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:10,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:16,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:16,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287596894] [2021-11-09 08:43:16,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287596894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:16,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:16,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:43:16,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703214025] [2021-11-09 08:43:16,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:43:16,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:16,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:43:16,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:43:16,609 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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) [2021-11-09 08:43:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:33,172 INFO L93 Difference]: Finished difference Result 459 states and 525 transitions. [2021-11-09 08:43:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 08:43:33,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 62 [2021-11-09 08:43:33,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:33,176 INFO L225 Difference]: With dead ends: 459 [2021-11-09 08:43:33,176 INFO L226 Difference]: Without dead ends: 357 [2021-11-09 08:43:33,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=238, Invalid=1168, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 08:43:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-09 08:43:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 217. [2021-11-09 08:43:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 206 states have (on average 1.2087378640776698) internal successors, (249), 216 states have internal predecessors, (249), 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) [2021-11-09 08:43:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 249 transitions. [2021-11-09 08:43:33,194 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 249 transitions. Word has length 62 [2021-11-09 08:43:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:33,195 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 249 transitions. [2021-11-09 08:43:33,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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) [2021-11-09 08:43:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 249 transitions. [2021-11-09 08:43:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:43:33,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:33,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:33,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 08:43:33,197 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:43:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:33,198 INFO L85 PathProgramCache]: Analyzing trace with hash -582909757, now seen corresponding path program 1 times [2021-11-09 08:43:33,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:33,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667688222] [2021-11-09 08:43:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:33,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:34,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:34,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667688222] [2021-11-09 08:43:34,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667688222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:34,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:34,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:43:34,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310499902] [2021-11-09 08:43:34,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:43:34,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:34,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:43:34,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:43:34,291 INFO L87 Difference]: Start difference. First operand 217 states and 249 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-09 08:43:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:36,890 INFO L93 Difference]: Finished difference Result 323 states and 372 transitions. [2021-11-09 08:43:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:43:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-11-09 08:43:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:36,892 INFO L225 Difference]: With dead ends: 323 [2021-11-09 08:43:36,892 INFO L226 Difference]: Without dead ends: 217 [2021-11-09 08:43:36,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:43:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-09 08:43:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-09 08:43:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 206 states have (on average 1.1941747572815533) internal successors, (246), 216 states have internal predecessors, (246), 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) [2021-11-09 08:43:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2021-11-09 08:43:36,907 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 62 [2021-11-09 08:43:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:36,908 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2021-11-09 08:43:36,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-09 08:43:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2021-11-09 08:43:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 08:43:36,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:36,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:36,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 08:43:36,910 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:43:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:36,911 INFO L85 PathProgramCache]: Analyzing trace with hash 425975615, now seen corresponding path program 1 times [2021-11-09 08:43:36,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:36,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274846399] [2021-11-09 08:43:36,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:36,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:38,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:38,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274846399] [2021-11-09 08:43:38,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274846399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:38,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:38,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:43:38,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998611048] [2021-11-09 08:43:38,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:43:38,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:43:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:43:38,604 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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) [2021-11-09 08:43:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:54,822 INFO L93 Difference]: Finished difference Result 446 states and 505 transitions. [2021-11-09 08:43:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:43:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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 62 [2021-11-09 08:43:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:54,825 INFO L225 Difference]: With dead ends: 446 [2021-11-09 08:43:54,825 INFO L226 Difference]: Without dead ends: 317 [2021-11-09 08:43:54,826 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:43:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-09 08:43:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 236. [2021-11-09 08:43:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 225 states have (on average 1.1866666666666668) internal successors, (267), 235 states have internal predecessors, (267), 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) [2021-11-09 08:43:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 267 transitions. [2021-11-09 08:43:54,844 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 267 transitions. Word has length 62 [2021-11-09 08:43:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:54,845 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 267 transitions. [2021-11-09 08:43:54,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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) [2021-11-09 08:43:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 267 transitions. [2021-11-09 08:43:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:43:54,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:54,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:54,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 08:43:54,847 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:43:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1414502148, now seen corresponding path program 1 times [2021-11-09 08:43:54,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:54,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160630641] [2021-11-09 08:43:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:54,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:55,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:55,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160630641] [2021-11-09 08:43:55,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160630641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:55,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:55,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:43:55,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502826445] [2021-11-09 08:43:55,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:43:55,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:43:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:43:55,717 INFO L87 Difference]: Start difference. First operand 236 states and 267 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-09 08:43:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:56,474 INFO L93 Difference]: Finished difference Result 330 states and 370 transitions. [2021-11-09 08:43:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:43:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 64 [2021-11-09 08:43:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:56,479 INFO L225 Difference]: With dead ends: 330 [2021-11-09 08:43:56,479 INFO L226 Difference]: Without dead ends: 326 [2021-11-09 08:43:56,480 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:43:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-09 08:43:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 240. [2021-11-09 08:43:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 229 states have (on average 1.1834061135371179) internal successors, (271), 239 states have internal predecessors, (271), 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) [2021-11-09 08:43:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 271 transitions. [2021-11-09 08:43:56,500 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 271 transitions. Word has length 64 [2021-11-09 08:43:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:56,500 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 271 transitions. [2021-11-09 08:43:56,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-09 08:43:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 271 transitions. [2021-11-09 08:43:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:43:56,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:56,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:56,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 08:43:56,503 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:43:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:56,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2071118522, now seen corresponding path program 1 times [2021-11-09 08:43:56,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:56,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894268196] [2021-11-09 08:43:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:56,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:57,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:57,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894268196] [2021-11-09 08:43:57,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894268196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:57,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:57,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:43:57,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933958427] [2021-11-09 08:43:57,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:43:57,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:43:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:43:57,310 INFO L87 Difference]: Start difference. First operand 240 states and 271 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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) [2021-11-09 08:44:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:01,135 INFO L93 Difference]: Finished difference Result 376 states and 418 transitions. [2021-11-09 08:44:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:44:01,136 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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 64 [2021-11-09 08:44:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:01,139 INFO L225 Difference]: With dead ends: 376 [2021-11-09 08:44:01,139 INFO L226 Difference]: Without dead ends: 372 [2021-11-09 08:44:01,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:44:01,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-09 08:44:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 231. [2021-11-09 08:44:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 221 states have (on average 1.1855203619909502) internal successors, (262), 230 states have internal predecessors, (262), 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) [2021-11-09 08:44:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 262 transitions. [2021-11-09 08:44:01,157 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 262 transitions. Word has length 64 [2021-11-09 08:44:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:01,157 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 262 transitions. [2021-11-09 08:44:01,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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) [2021-11-09 08:44:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 262 transitions. [2021-11-09 08:44:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 08:44:01,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:01,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:01,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 08:44:01,160 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:44:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1739279944, now seen corresponding path program 1 times [2021-11-09 08:44:01,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:01,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015238347] [2021-11-09 08:44:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:01,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:03,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:03,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015238347] [2021-11-09 08:44:03,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015238347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:03,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:03,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 08:44:03,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769787773] [2021-11-09 08:44:03,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:44:03,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:44:03,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:44:03,248 INFO L87 Difference]: Start difference. First operand 231 states and 262 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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) [2021-11-09 08:44:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:18,483 INFO L93 Difference]: Finished difference Result 391 states and 443 transitions. [2021-11-09 08:44:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:44:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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 68 [2021-11-09 08:44:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:18,485 INFO L225 Difference]: With dead ends: 391 [2021-11-09 08:44:18,485 INFO L226 Difference]: Without dead ends: 226 [2021-11-09 08:44:18,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:44:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-09 08:44:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 212. [2021-11-09 08:44:18,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 202 states have (on average 1.1732673267326732) internal successors, (237), 211 states have internal predecessors, (237), 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) [2021-11-09 08:44:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 237 transitions. [2021-11-09 08:44:18,501 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 237 transitions. Word has length 68 [2021-11-09 08:44:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:18,502 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 237 transitions. [2021-11-09 08:44:18,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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) [2021-11-09 08:44:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 237 transitions. [2021-11-09 08:44:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 08:44:18,503 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:18,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:18,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 08:44:18,504 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:44:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1068745994, now seen corresponding path program 1 times [2021-11-09 08:44:18,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:18,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742884956] [2021-11-09 08:44:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:18,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:18,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:18,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742884956] [2021-11-09 08:44:18,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742884956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:18,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:18,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:44:18,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55353095] [2021-11-09 08:44:18,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:44:18,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:44:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:44:18,765 INFO L87 Difference]: Start difference. First operand 212 states and 237 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-09 08:44:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:18,917 INFO L93 Difference]: Finished difference Result 353 states and 395 transitions. [2021-11-09 08:44:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:44:18,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 71 [2021-11-09 08:44:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:18,920 INFO L225 Difference]: With dead ends: 353 [2021-11-09 08:44:18,920 INFO L226 Difference]: Without dead ends: 213 [2021-11-09 08:44:18,920 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:44:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-09 08:44:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 202. [2021-11-09 08:44:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 192 states have (on average 1.1510416666666667) internal successors, (221), 201 states have internal predecessors, (221), 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) [2021-11-09 08:44:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 221 transitions. [2021-11-09 08:44:18,939 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 221 transitions. Word has length 71 [2021-11-09 08:44:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:18,940 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 221 transitions. [2021-11-09 08:44:18,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-09 08:44:18,941 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 221 transitions. [2021-11-09 08:44:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 08:44:18,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:18,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:18,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 08:44:18,943 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:44:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1728277516, now seen corresponding path program 1 times [2021-11-09 08:44:18,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:18,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051311496] [2021-11-09 08:44:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:18,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:20,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:20,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051311496] [2021-11-09 08:44:20,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051311496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:20,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:20,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 08:44:20,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013743979] [2021-11-09 08:44:20,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:44:20,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:44:20,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:44:20,612 INFO L87 Difference]: Start difference. First operand 202 states and 221 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2021-11-09 08:44:30,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:30,799 INFO L93 Difference]: Finished difference Result 319 states and 350 transitions. [2021-11-09 08:44:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:44:30,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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 71 [2021-11-09 08:44:30,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:30,802 INFO L225 Difference]: With dead ends: 319 [2021-11-09 08:44:30,802 INFO L226 Difference]: Without dead ends: 212 [2021-11-09 08:44:30,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-09 08:44:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-09 08:44:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 202. [2021-11-09 08:44:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 192 states have (on average 1.1458333333333333) internal successors, (220), 201 states have internal predecessors, (220), 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) [2021-11-09 08:44:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2021-11-09 08:44:30,820 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 71 [2021-11-09 08:44:30,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:30,820 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2021-11-09 08:44:30,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2021-11-09 08:44:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2021-11-09 08:44:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 08:44:30,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:30,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:30,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 08:44:30,823 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:44:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1026677642, now seen corresponding path program 1 times [2021-11-09 08:44:30,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:30,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041135959] [2021-11-09 08:44:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:30,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:36,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:36,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041135959] [2021-11-09 08:44:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041135959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:36,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:36,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-09 08:44:36,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873185238] [2021-11-09 08:44:36,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:44:36,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:44:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-09 08:44:36,246 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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) [2021-11-09 08:44:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:44:54,870 INFO L93 Difference]: Finished difference Result 272 states and 296 transitions. [2021-11-09 08:44:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:44:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 71 [2021-11-09 08:44:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:44:54,873 INFO L225 Difference]: With dead ends: 272 [2021-11-09 08:44:54,873 INFO L226 Difference]: Without dead ends: 191 [2021-11-09 08:44:54,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:44:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-09 08:44:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-11-09 08:44:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 181 states have (on average 1.132596685082873) internal successors, (205), 190 states have internal predecessors, (205), 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) [2021-11-09 08:44:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 205 transitions. [2021-11-09 08:44:54,888 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 205 transitions. Word has length 71 [2021-11-09 08:44:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:44:54,889 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 205 transitions. [2021-11-09 08:44:54,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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) [2021-11-09 08:44:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 205 transitions. [2021-11-09 08:44:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 08:44:54,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:44:54,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:44:54,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 08:44:54,891 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:44:54,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:44:54,892 INFO L85 PathProgramCache]: Analyzing trace with hash 273725830, now seen corresponding path program 1 times [2021-11-09 08:44:54,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:44:54,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717369499] [2021-11-09 08:44:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:44:54,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:44:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:44:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:44:55,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:44:55,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717369499] [2021-11-09 08:44:55,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717369499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:44:55,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:44:55,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:44:55,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918808661] [2021-11-09 08:44:55,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:44:55,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:44:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:44:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:44:55,429 INFO L87 Difference]: Start difference. First operand 191 states and 205 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-09 08:45:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:00,080 INFO L93 Difference]: Finished difference Result 259 states and 279 transitions. [2021-11-09 08:45:00,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:00,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2021-11-09 08:45:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:00,082 INFO L225 Difference]: With dead ends: 259 [2021-11-09 08:45:00,083 INFO L226 Difference]: Without dead ends: 189 [2021-11-09 08:45:00,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:45:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-09 08:45:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-11-09 08:45:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 179 states have (on average 1.1229050279329609) internal successors, (201), 188 states have internal predecessors, (201), 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) [2021-11-09 08:45:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 201 transitions. [2021-11-09 08:45:00,098 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 201 transitions. Word has length 71 [2021-11-09 08:45:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:00,098 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 201 transitions. [2021-11-09 08:45:00,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-09 08:45:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 201 transitions. [2021-11-09 08:45:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 08:45:00,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:00,100 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 08:45:00,101 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:45:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash -406332540, now seen corresponding path program 1 times [2021-11-09 08:45:00,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:00,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851263089] [2021-11-09 08:45:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:00,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:01,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:01,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851263089] [2021-11-09 08:45:01,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851263089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:01,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:01,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 08:45:01,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703161748] [2021-11-09 08:45:01,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:45:01,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:45:01,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:45:01,323 INFO L87 Difference]: Start difference. First operand 189 states and 201 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2021-11-09 08:45:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:11,221 INFO L93 Difference]: Finished difference Result 326 states and 350 transitions. [2021-11-09 08:45:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 08:45:11,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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 71 [2021-11-09 08:45:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:11,224 INFO L225 Difference]: With dead ends: 326 [2021-11-09 08:45:11,224 INFO L226 Difference]: Without dead ends: 258 [2021-11-09 08:45:11,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:45:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-09 08:45:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 189. [2021-11-09 08:45:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 179 states have (on average 1.1173184357541899) internal successors, (200), 188 states have internal predecessors, (200), 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) [2021-11-09 08:45:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 200 transitions. [2021-11-09 08:45:11,241 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 200 transitions. Word has length 71 [2021-11-09 08:45:11,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:11,241 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 200 transitions. [2021-11-09 08:45:11,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2021-11-09 08:45:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 200 transitions. [2021-11-09 08:45:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 08:45:11,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:11,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:11,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 08:45:11,244 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:45:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:11,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1473545407, now seen corresponding path program 1 times [2021-11-09 08:45:11,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:11,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134853269] [2021-11-09 08:45:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:11,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:11,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:11,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134853269] [2021-11-09 08:45:11,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134853269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:11,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:11,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:45:11,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493899040] [2021-11-09 08:45:11,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:45:11,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:45:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:45:11,834 INFO L87 Difference]: Start difference. First operand 189 states and 200 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-09 08:45:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:12,426 INFO L93 Difference]: Finished difference Result 258 states and 275 transitions. [2021-11-09 08:45:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:45:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 73 [2021-11-09 08:45:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:12,429 INFO L225 Difference]: With dead ends: 258 [2021-11-09 08:45:12,429 INFO L226 Difference]: Without dead ends: 256 [2021-11-09 08:45:12,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:45:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-09 08:45:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 195. [2021-11-09 08:45:12,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.1135135135135135) internal successors, (206), 194 states have internal predecessors, (206), 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) [2021-11-09 08:45:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 206 transitions. [2021-11-09 08:45:12,447 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 206 transitions. Word has length 73 [2021-11-09 08:45:12,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:12,447 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 206 transitions. [2021-11-09 08:45:12,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-09 08:45:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 206 transitions. [2021-11-09 08:45:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 08:45:12,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:12,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:12,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 08:45:12,450 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:45:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash 664198781, now seen corresponding path program 1 times [2021-11-09 08:45:12,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:12,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293469797] [2021-11-09 08:45:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:12,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:13,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:13,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293469797] [2021-11-09 08:45:13,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293469797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:13,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:13,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 08:45:13,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614809173] [2021-11-09 08:45:13,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:45:13,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:45:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:45:13,715 INFO L87 Difference]: Start difference. First operand 195 states and 206 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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) [2021-11-09 08:45:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:21,859 INFO L93 Difference]: Finished difference Result 328 states and 351 transitions. [2021-11-09 08:45:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:45:21,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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 73 [2021-11-09 08:45:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:21,862 INFO L225 Difference]: With dead ends: 328 [2021-11-09 08:45:21,862 INFO L226 Difference]: Without dead ends: 259 [2021-11-09 08:45:21,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-11-09 08:45:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-09 08:45:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 195. [2021-11-09 08:45:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.1081081081081081) internal successors, (205), 194 states have internal predecessors, (205), 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) [2021-11-09 08:45:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 205 transitions. [2021-11-09 08:45:21,879 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 205 transitions. Word has length 73 [2021-11-09 08:45:21,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:21,879 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 205 transitions. [2021-11-09 08:45:21,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 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) [2021-11-09 08:45:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 205 transitions. [2021-11-09 08:45:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 08:45:21,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:21,881 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:21,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 08:45:21,882 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:45:21,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash -539652075, now seen corresponding path program 1 times [2021-11-09 08:45:21,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:21,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104962011] [2021-11-09 08:45:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:21,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:22,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:22,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104962011] [2021-11-09 08:45:22,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104962011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:22,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:22,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:45:22,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284700099] [2021-11-09 08:45:22,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:45:22,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:45:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:45:22,215 INFO L87 Difference]: Start difference. First operand 195 states and 205 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-09 08:45:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:22,311 INFO L93 Difference]: Finished difference Result 241 states and 253 transitions. [2021-11-09 08:45:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:45:22,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 78 [2021-11-09 08:45:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:22,313 INFO L225 Difference]: With dead ends: 241 [2021-11-09 08:45:22,313 INFO L226 Difference]: Without dead ends: 195 [2021-11-09 08:45:22,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-09 08:45:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-09 08:45:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.1027027027027028) internal successors, (204), 194 states have internal predecessors, (204), 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) [2021-11-09 08:45:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 204 transitions. [2021-11-09 08:45:22,329 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 204 transitions. Word has length 78 [2021-11-09 08:45:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:22,330 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 204 transitions. [2021-11-09 08:45:22,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-09 08:45:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 204 transitions. [2021-11-09 08:45:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 08:45:22,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:22,332 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:22,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 08:45:22,332 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:45:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:22,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1001040936, now seen corresponding path program 1 times [2021-11-09 08:45:22,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:22,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599645073] [2021-11-09 08:45:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:22,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:23,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:23,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599645073] [2021-11-09 08:45:23,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599645073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:23,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:23,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:45:23,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186264843] [2021-11-09 08:45:23,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:45:23,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:45:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:45:23,403 INFO L87 Difference]: Start difference. First operand 195 states and 204 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-11-09 08:45:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:45:28,242 INFO L93 Difference]: Finished difference Result 328 states and 345 transitions. [2021-11-09 08:45:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:45:28,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 80 [2021-11-09 08:45:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:45:28,245 INFO L225 Difference]: With dead ends: 328 [2021-11-09 08:45:28,245 INFO L226 Difference]: Without dead ends: 241 [2021-11-09 08:45:28,246 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:45:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-09 08:45:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 195. [2021-11-09 08:45:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.0918918918918918) internal successors, (202), 194 states have internal predecessors, (202), 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) [2021-11-09 08:45:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2021-11-09 08:45:28,263 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 80 [2021-11-09 08:45:28,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:45:28,263 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 202 transitions. [2021-11-09 08:45:28,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-11-09 08:45:28,264 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 202 transitions. [2021-11-09 08:45:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 08:45:28,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:45:28,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:45:28,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 08:45:28,266 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:45:28,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:45:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1135054442, now seen corresponding path program 1 times [2021-11-09 08:45:28,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:45:28,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374773558] [2021-11-09 08:45:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:45:28,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:45:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:45:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:45:42,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:45:42,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374773558] [2021-11-09 08:45:42,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374773558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:45:42,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:45:42,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 08:45:42,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155807223] [2021-11-09 08:45:42,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 08:45:42,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:45:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 08:45:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:45:42,727 INFO L87 Difference]: Start difference. First operand 195 states and 202 transitions. Second operand has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 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) [2021-11-09 08:46:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:00,460 INFO L93 Difference]: Finished difference Result 263 states and 274 transitions. [2021-11-09 08:46:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 08:46:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 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 80 [2021-11-09 08:46:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:00,462 INFO L225 Difference]: With dead ends: 263 [2021-11-09 08:46:00,462 INFO L226 Difference]: Without dead ends: 195 [2021-11-09 08:46:00,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-11-09 08:46:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-09 08:46:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-09 08:46:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.0864864864864865) internal successors, (201), 194 states have internal predecessors, (201), 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) [2021-11-09 08:46:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 201 transitions. [2021-11-09 08:46:00,480 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 201 transitions. Word has length 80 [2021-11-09 08:46:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:00,480 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 201 transitions. [2021-11-09 08:46:00,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 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) [2021-11-09 08:46:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 201 transitions. [2021-11-09 08:46:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 08:46:00,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:00,482 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:00,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 08:46:00,483 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:46:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 442120207, now seen corresponding path program 1 times [2021-11-09 08:46:00,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:00,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049271491] [2021-11-09 08:46:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:00,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:05,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:05,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049271491] [2021-11-09 08:46:05,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049271491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:05,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:05,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 08:46:05,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509394845] [2021-11-09 08:46:05,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 08:46:05,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 08:46:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:46:05,298 INFO L87 Difference]: Start difference. First operand 195 states and 201 transitions. Second operand has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 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) [2021-11-09 08:46:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:23,052 INFO L93 Difference]: Finished difference Result 256 states and 266 transitions. [2021-11-09 08:46:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-09 08:46:23,052 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 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 82 [2021-11-09 08:46:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:23,054 INFO L225 Difference]: With dead ends: 256 [2021-11-09 08:46:23,054 INFO L226 Difference]: Without dead ends: 254 [2021-11-09 08:46:23,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=382, Invalid=1510, Unknown=0, NotChecked=0, Total=1892 [2021-11-09 08:46:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-09 08:46:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 187. [2021-11-09 08:46:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 178 states have (on average 1.0842696629213484) internal successors, (193), 186 states have internal predecessors, (193), 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) [2021-11-09 08:46:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 193 transitions. [2021-11-09 08:46:23,070 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 193 transitions. Word has length 82 [2021-11-09 08:46:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:23,070 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 193 transitions. [2021-11-09 08:46:23,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 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) [2021-11-09 08:46:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 193 transitions. [2021-11-09 08:46:23,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 08:46:23,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:23,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:23,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 08:46:23,072 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:46:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:23,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1039282540, now seen corresponding path program 1 times [2021-11-09 08:46:23,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:23,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125519922] [2021-11-09 08:46:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:23,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:23,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:23,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125519922] [2021-11-09 08:46:23,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125519922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:23,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:23,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:46:23,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659144859] [2021-11-09 08:46:23,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:46:23,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:46:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:46:23,824 INFO L87 Difference]: Start difference. First operand 187 states and 193 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2021-11-09 08:46:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:24,116 INFO L93 Difference]: Finished difference Result 187 states and 193 transitions. [2021-11-09 08:46:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:46:24,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 83 [2021-11-09 08:46:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:24,118 INFO L225 Difference]: With dead ends: 187 [2021-11-09 08:46:24,118 INFO L226 Difference]: Without dead ends: 185 [2021-11-09 08:46:24,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:46:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-09 08:46:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-11-09 08:46:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 177 states have (on average 1.07909604519774) internal successors, (191), 184 states have internal predecessors, (191), 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) [2021-11-09 08:46:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 191 transitions. [2021-11-09 08:46:24,134 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 191 transitions. Word has length 83 [2021-11-09 08:46:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:24,135 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 191 transitions. [2021-11-09 08:46:24,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2021-11-09 08:46:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 191 transitions. [2021-11-09 08:46:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 08:46:24,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:24,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:24,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 08:46:24,137 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:46:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976047, now seen corresponding path program 1 times [2021-11-09 08:46:24,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:24,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641725864] [2021-11-09 08:46:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:24,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:24,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:24,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641725864] [2021-11-09 08:46:24,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641725864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:24,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:24,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:46:24,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006002476] [2021-11-09 08:46:24,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:46:24,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:46:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:46:24,698 INFO L87 Difference]: Start difference. First operand 185 states and 191 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-09 08:46:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:27,119 INFO L93 Difference]: Finished difference Result 201 states and 206 transitions. [2021-11-09 08:46:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:46:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 84 [2021-11-09 08:46:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:27,121 INFO L225 Difference]: With dead ends: 201 [2021-11-09 08:46:27,121 INFO L226 Difference]: Without dead ends: 185 [2021-11-09 08:46:27,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:46:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-09 08:46:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-11-09 08:46:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 177 states have (on average 1.073446327683616) internal successors, (190), 184 states have internal predecessors, (190), 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) [2021-11-09 08:46:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 190 transitions. [2021-11-09 08:46:27,139 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 190 transitions. Word has length 84 [2021-11-09 08:46:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:27,140 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 190 transitions. [2021-11-09 08:46:27,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2021-11-09 08:46:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 190 transitions. [2021-11-09 08:46:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-09 08:46:27,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:27,141 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:27,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 08:46:27,142 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:46:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1982017560, now seen corresponding path program 1 times [2021-11-09 08:46:27,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:27,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059298747] [2021-11-09 08:46:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:27,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:27,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:27,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059298747] [2021-11-09 08:46:27,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059298747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:27,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:27,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:46:27,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555728356] [2021-11-09 08:46:27,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:46:27,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:46:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:46:27,915 INFO L87 Difference]: Start difference. First operand 185 states and 190 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2021-11-09 08:46:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:35,325 INFO L93 Difference]: Finished difference Result 295 states and 304 transitions. [2021-11-09 08:46:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:46:35,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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 84 [2021-11-09 08:46:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:35,327 INFO L225 Difference]: With dead ends: 295 [2021-11-09 08:46:35,327 INFO L226 Difference]: Without dead ends: 239 [2021-11-09 08:46:35,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:46:35,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-09 08:46:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 194. [2021-11-09 08:46:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 186 states have (on average 1.0698924731182795) internal successors, (199), 193 states have internal predecessors, (199), 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) [2021-11-09 08:46:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 199 transitions. [2021-11-09 08:46:35,343 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 199 transitions. Word has length 84 [2021-11-09 08:46:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:35,343 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 199 transitions. [2021-11-09 08:46:35,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2021-11-09 08:46:35,344 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 199 transitions. [2021-11-09 08:46:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 08:46:35,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:35,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:35,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 08:46:35,345 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:46:35,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1976993750, now seen corresponding path program 1 times [2021-11-09 08:46:35,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:35,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021474476] [2021-11-09 08:46:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:35,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:39,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:39,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021474476] [2021-11-09 08:46:39,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021474476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:39,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:39,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:46:39,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934181448] [2021-11-09 08:46:39,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:46:39,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:39,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:46:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:46:39,500 INFO L87 Difference]: Start difference. First operand 194 states and 199 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 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) [2021-11-09 08:46:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:46:51,670 INFO L93 Difference]: Finished difference Result 237 states and 243 transitions. [2021-11-09 08:46:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:46:51,670 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 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 85 [2021-11-09 08:46:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:46:51,672 INFO L225 Difference]: With dead ends: 237 [2021-11-09 08:46:51,672 INFO L226 Difference]: Without dead ends: 235 [2021-11-09 08:46:51,673 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:46:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-09 08:46:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 203. [2021-11-09 08:46:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 195 states have (on average 1.0666666666666667) internal successors, (208), 202 states have internal predecessors, (208), 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) [2021-11-09 08:46:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 208 transitions. [2021-11-09 08:46:51,691 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 208 transitions. Word has length 85 [2021-11-09 08:46:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:46:51,691 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 208 transitions. [2021-11-09 08:46:51,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 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) [2021-11-09 08:46:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 208 transitions. [2021-11-09 08:46:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 08:46:51,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:46:51,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:46:51,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 08:46:51,693 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:46:51,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:46:51,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1515583928, now seen corresponding path program 1 times [2021-11-09 08:46:51,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:46:51,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593892046] [2021-11-09 08:46:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:46:51,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:46:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:46:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:46:59,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:46:59,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593892046] [2021-11-09 08:46:59,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593892046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:46:59,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:46:59,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 08:46:59,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799931557] [2021-11-09 08:46:59,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 08:46:59,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:46:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 08:46:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-09 08:46:59,337 INFO L87 Difference]: Start difference. First operand 203 states and 208 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2021-11-09 08:47:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:04,924 INFO L93 Difference]: Finished difference Result 235 states and 241 transitions. [2021-11-09 08:47:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:47:04,924 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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 87 [2021-11-09 08:47:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:04,926 INFO L225 Difference]: With dead ends: 235 [2021-11-09 08:47:04,926 INFO L226 Difference]: Without dead ends: 233 [2021-11-09 08:47:04,926 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:47:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-09 08:47:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 205. [2021-11-09 08:47:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 197 states have (on average 1.0659898477157361) internal successors, (210), 204 states have internal predecessors, (210), 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) [2021-11-09 08:47:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 210 transitions. [2021-11-09 08:47:04,945 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 210 transitions. Word has length 87 [2021-11-09 08:47:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:04,945 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 210 transitions. [2021-11-09 08:47:04,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2021-11-09 08:47:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 210 transitions. [2021-11-09 08:47:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-09 08:47:04,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:04,947 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:04,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 08:47:04,948 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:47:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:04,948 INFO L85 PathProgramCache]: Analyzing trace with hash 482376762, now seen corresponding path program 1 times [2021-11-09 08:47:04,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:04,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512491451] [2021-11-09 08:47:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:04,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:12,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:12,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512491451] [2021-11-09 08:47:12,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512491451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:12,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:12,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:47:12,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063653574] [2021-11-09 08:47:12,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:47:12,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:47:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:47:12,847 INFO L87 Difference]: Start difference. First operand 205 states and 210 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 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) [2021-11-09 08:47:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:26,895 INFO L93 Difference]: Finished difference Result 235 states and 241 transitions. [2021-11-09 08:47:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:47:26,896 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 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 89 [2021-11-09 08:47:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:26,898 INFO L225 Difference]: With dead ends: 235 [2021-11-09 08:47:26,899 INFO L226 Difference]: Without dead ends: 233 [2021-11-09 08:47:26,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:47:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-09 08:47:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 207. [2021-11-09 08:47:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 199 states have (on average 1.065326633165829) internal successors, (212), 206 states have internal predecessors, (212), 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) [2021-11-09 08:47:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 212 transitions. [2021-11-09 08:47:26,920 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 212 transitions. Word has length 89 [2021-11-09 08:47:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:26,920 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 212 transitions. [2021-11-09 08:47:26,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 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) [2021-11-09 08:47:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 212 transitions. [2021-11-09 08:47:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:47:26,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:26,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:26,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-09 08:47:26,923 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:47:26,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:26,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1692912129, now seen corresponding path program 1 times [2021-11-09 08:47:26,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:26,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987342278] [2021-11-09 08:47:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:26,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:29,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:29,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987342278] [2021-11-09 08:47:29,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987342278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:29,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:29,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-09 08:47:29,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083532706] [2021-11-09 08:47:29,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 08:47:29,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:29,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 08:47:29,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:47:29,621 INFO L87 Difference]: Start difference. First operand 207 states and 212 transitions. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 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) [2021-11-09 08:47:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:42,676 INFO L93 Difference]: Finished difference Result 247 states and 252 transitions. [2021-11-09 08:47:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:47:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 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 93 [2021-11-09 08:47:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:42,678 INFO L225 Difference]: With dead ends: 247 [2021-11-09 08:47:42,679 INFO L226 Difference]: Without dead ends: 225 [2021-11-09 08:47:42,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:47:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-09 08:47:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 209. [2021-11-09 08:47:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 201 states have (on average 1.064676616915423) internal successors, (214), 208 states have internal predecessors, (214), 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) [2021-11-09 08:47:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2021-11-09 08:47:42,702 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 93 [2021-11-09 08:47:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:42,703 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 214 transitions. [2021-11-09 08:47:42,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 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) [2021-11-09 08:47:42,703 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 214 transitions. [2021-11-09 08:47:42,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:47:42,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:42,705 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:42,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-09 08:47:42,705 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:47:42,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:42,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1692359010, now seen corresponding path program 1 times [2021-11-09 08:47:42,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:42,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975427737] [2021-11-09 08:47:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:42,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:47:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:47:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:47:46,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:47:46,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975427737] [2021-11-09 08:47:46,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975427737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:47:46,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:47:46,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:47:46,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829346748] [2021-11-09 08:47:46,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:47:46,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:47:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:47:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:47:46,268 INFO L87 Difference]: Start difference. First operand 209 states and 214 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2021-11-09 08:47:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:47:57,764 INFO L93 Difference]: Finished difference Result 209 states and 214 transitions. [2021-11-09 08:47:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:47:57,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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 93 [2021-11-09 08:47:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:47:57,766 INFO L225 Difference]: With dead ends: 209 [2021-11-09 08:47:57,766 INFO L226 Difference]: Without dead ends: 207 [2021-11-09 08:47:57,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:47:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-09 08:47:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-11-09 08:47:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 200 states have (on average 1.06) internal successors, (212), 206 states have internal predecessors, (212), 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) [2021-11-09 08:47:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 212 transitions. [2021-11-09 08:47:57,788 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 212 transitions. Word has length 93 [2021-11-09 08:47:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:47:57,789 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 212 transitions. [2021-11-09 08:47:57,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2021-11-09 08:47:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 212 transitions. [2021-11-09 08:47:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:47:57,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:47:57,791 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:47:57,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-09 08:47:57,791 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:47:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:47:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash 274524824, now seen corresponding path program 1 times [2021-11-09 08:47:57,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:47:57,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737228182] [2021-11-09 08:47:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:47:57,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:48:05,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:05,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737228182] [2021-11-09 08:48:05,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737228182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:05,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:05,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 08:48:05,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723909003] [2021-11-09 08:48:05,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:48:05,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:48:05,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:48:05,393 INFO L87 Difference]: Start difference. First operand 207 states and 212 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 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) [2021-11-09 08:48:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:12,906 INFO L93 Difference]: Finished difference Result 260 states and 265 transitions. [2021-11-09 08:48:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 08:48:12,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 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 93 [2021-11-09 08:48:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:12,908 INFO L225 Difference]: With dead ends: 260 [2021-11-09 08:48:12,908 INFO L226 Difference]: Without dead ends: 216 [2021-11-09 08:48:12,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2021-11-09 08:48:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-09 08:48:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 200. [2021-11-09 08:48:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.0515463917525774) internal successors, (204), 199 states have internal predecessors, (204), 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) [2021-11-09 08:48:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2021-11-09 08:48:12,923 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 93 [2021-11-09 08:48:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:12,924 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 204 transitions. [2021-11-09 08:48:12,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 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) [2021-11-09 08:48:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 204 transitions. [2021-11-09 08:48:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 08:48:12,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:12,925 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:48:12,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-09 08:48:12,926 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:48:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:12,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1084636378, now seen corresponding path program 1 times [2021-11-09 08:48:12,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:12,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421774268] [2021-11-09 08:48:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:12,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:48:14,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:14,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421774268] [2021-11-09 08:48:14,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421774268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:14,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:14,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:48:14,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849315248] [2021-11-09 08:48:14,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:48:14,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:48:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:48:14,441 INFO L87 Difference]: Start difference. First operand 200 states and 204 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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) [2021-11-09 08:48:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:24,075 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2021-11-09 08:48:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:48:24,076 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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 94 [2021-11-09 08:48:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:24,077 INFO L225 Difference]: With dead ends: 255 [2021-11-09 08:48:24,077 INFO L226 Difference]: Without dead ends: 214 [2021-11-09 08:48:24,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:48:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-09 08:48:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 200. [2021-11-09 08:48:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.0463917525773196) internal successors, (203), 199 states have internal predecessors, (203), 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) [2021-11-09 08:48:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 203 transitions. [2021-11-09 08:48:24,096 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 203 transitions. Word has length 94 [2021-11-09 08:48:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:24,096 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 203 transitions. [2021-11-09 08:48:24,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 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) [2021-11-09 08:48:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 203 transitions. [2021-11-09 08:48:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-09 08:48:24,098 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:24,098 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:48:24,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-09 08:48:24,098 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:48:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1558056205, now seen corresponding path program 1 times [2021-11-09 08:48:24,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:24,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135482690] [2021-11-09 08:48:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:24,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:48:25,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:25,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135482690] [2021-11-09 08:48:25,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135482690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:25,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:25,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 08:48:25,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279581218] [2021-11-09 08:48:25,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:48:25,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:48:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:48:25,844 INFO L87 Difference]: Start difference. First operand 200 states and 203 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 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) [2021-11-09 08:48:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:48:37,721 INFO L93 Difference]: Finished difference Result 214 states and 216 transitions. [2021-11-09 08:48:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:48:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 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 96 [2021-11-09 08:48:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:48:37,722 INFO L225 Difference]: With dead ends: 214 [2021-11-09 08:48:37,723 INFO L226 Difference]: Without dead ends: 212 [2021-11-09 08:48:37,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-09 08:48:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-09 08:48:37,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2021-11-09 08:48:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 199 states have (on average 1.0452261306532664) internal successors, (208), 204 states have internal predecessors, (208), 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) [2021-11-09 08:48:37,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2021-11-09 08:48:37,746 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 96 [2021-11-09 08:48:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:48:37,747 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2021-11-09 08:48:37,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 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) [2021-11-09 08:48:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2021-11-09 08:48:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 08:48:37,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:48:37,748 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:48:37,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-09 08:48:37,749 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:48:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:48:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash -758827371, now seen corresponding path program 1 times [2021-11-09 08:48:37,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:48:37,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661201144] [2021-11-09 08:48:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:48:37,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:48:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:48:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:48:47,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:48:47,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661201144] [2021-11-09 08:48:47,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661201144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:48:47,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:48:47,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-09 08:48:47,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39553329] [2021-11-09 08:48:47,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 08:48:47,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:48:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 08:48:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2021-11-09 08:48:47,494 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 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) [2021-11-09 08:49:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:49:04,171 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2021-11-09 08:49:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:49:04,172 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 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 100 [2021-11-09 08:49:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:49:04,174 INFO L225 Difference]: With dead ends: 212 [2021-11-09 08:49:04,174 INFO L226 Difference]: Without dead ends: 210 [2021-11-09 08:49:04,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2021-11-09 08:49:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-09 08:49:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 203. [2021-11-09 08:49:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.0404040404040404) internal successors, (206), 202 states have internal predecessors, (206), 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) [2021-11-09 08:49:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 206 transitions. [2021-11-09 08:49:04,200 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 206 transitions. Word has length 100 [2021-11-09 08:49:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:49:04,201 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 206 transitions. [2021-11-09 08:49:04,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 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) [2021-11-09 08:49:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 206 transitions. [2021-11-09 08:49:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-09 08:49:04,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:49:04,203 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:49:04,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-09 08:49:04,203 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:49:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:49:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash 970156395, now seen corresponding path program 1 times [2021-11-09 08:49:04,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:49:04,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161799975] [2021-11-09 08:49:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:49:04,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:49:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:49:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:49:06,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:49:06,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161799975] [2021-11-09 08:49:06,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161799975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:49:06,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:49:06,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:49:06,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125224204] [2021-11-09 08:49:06,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:49:06,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:49:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:49:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:49:06,183 INFO L87 Difference]: Start difference. First operand 203 states and 206 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2021-11-09 08:49:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:49:11,054 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2021-11-09 08:49:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:49:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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 101 [2021-11-09 08:49:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:49:11,056 INFO L225 Difference]: With dead ends: 217 [2021-11-09 08:49:11,056 INFO L226 Difference]: Without dead ends: 137 [2021-11-09 08:49:11,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:49:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-09 08:49:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-11-09 08:49:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.0538461538461539) internal successors, (137), 134 states have internal predecessors, (137), 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) [2021-11-09 08:49:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2021-11-09 08:49:11,071 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 101 [2021-11-09 08:49:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:49:11,072 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2021-11-09 08:49:11,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2021-11-09 08:49:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2021-11-09 08:49:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-09 08:49:11,073 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:49:11,073 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:49:11,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-09 08:49:11,074 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:49:11,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:49:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash 911471799, now seen corresponding path program 1 times [2021-11-09 08:49:11,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:49:11,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014884327] [2021-11-09 08:49:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:49:11,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:49:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:49:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:49:28,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:49:28,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014884327] [2021-11-09 08:49:28,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014884327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:49:28,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:49:28,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 08:49:28,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912941985] [2021-11-09 08:49:28,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:49:28,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:49:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:49:28,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:49:28,468 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2021-11-09 08:49:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:49:41,892 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2021-11-09 08:49:41,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:49:41,892 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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 102 [2021-11-09 08:49:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:49:41,893 INFO L225 Difference]: With dead ends: 135 [2021-11-09 08:49:41,894 INFO L226 Difference]: Without dead ends: 133 [2021-11-09 08:49:41,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2021-11-09 08:49:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-09 08:49:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-09 08:49:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.0465116279069768) internal successors, (135), 132 states have internal predecessors, (135), 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) [2021-11-09 08:49:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2021-11-09 08:49:41,912 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 102 [2021-11-09 08:49:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:49:41,913 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2021-11-09 08:49:41,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2021-11-09 08:49:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2021-11-09 08:49:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 08:49:41,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:49:41,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:49:41,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-09 08:49:41,915 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:49:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:49:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash -248794247, now seen corresponding path program 1 times [2021-11-09 08:49:41,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:49:41,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196923598] [2021-11-09 08:49:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:49:41,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:49:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:49:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:49:48,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:49:48,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196923598] [2021-11-09 08:49:48,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196923598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:49:48,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:49:48,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 08:49:48,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966234019] [2021-11-09 08:49:48,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 08:49:48,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:49:48,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 08:49:48,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:49:48,627 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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) [2021-11-09 08:50:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:50:07,332 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2021-11-09 08:50:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:50:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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 104 [2021-11-09 08:50:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:50:07,337 INFO L225 Difference]: With dead ends: 135 [2021-11-09 08:50:07,337 INFO L226 Difference]: Without dead ends: 133 [2021-11-09 08:50:07,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-11-09 08:50:07,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-09 08:50:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2021-11-09 08:50:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 128 states have (on average 1.0390625) internal successors, (133), 130 states have internal predecessors, (133), 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) [2021-11-09 08:50:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2021-11-09 08:50:07,349 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 104 [2021-11-09 08:50:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:50:07,350 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2021-11-09 08:50:07,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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) [2021-11-09 08:50:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2021-11-09 08:50:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-09 08:50:07,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:50:07,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:50:07,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-09 08:50:07,352 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-09 08:50:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:50:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1283962302, now seen corresponding path program 1 times [2021-11-09 08:50:07,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:50:07,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943188879] [2021-11-09 08:50:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:50:07,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:50:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat