./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G --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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:44:07,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:44:07,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:44:07,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:44:07,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:44:07,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:44:07,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:44:07,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:44:07,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:44:07,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:44:07,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:44:07,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:44:07,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:44:07,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:44:07,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:44:07,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:44:07,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:44:07,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:44:07,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:44:07,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:44:07,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:44:07,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:44:07,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:44:07,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:44:07,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:44:07,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:44:07,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:44:07,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:44:07,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:44:07,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:44:07,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:44:07,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:44:07,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:44:07,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:44:07,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:44:07,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:44:07,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:44:07,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:44:07,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:44:07,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:44:07,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:44:07,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 12:44:07,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:44:07,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:44:07,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:44:07,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:44:07,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:44:07,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:44:07,564 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:44:07,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:44:07,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:44:07,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:44:07,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:44:07,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:44:07,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:44:07,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:44:07,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:44:07,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:44:07,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:44:07,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:44:07,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:44:07,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:44:07,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:44:07,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:44:07,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:44:07,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:44:07,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:44:07,572 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:44:07,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:44:07,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:44:07,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:44:07,573 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_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-23 12:44:07,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:44:07,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:44:07,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:44:07,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:44:07,978 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:44:07,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-23 12:44:08,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/data/be83d5bd1/5a7d926ba8194ff7a7f5d798b3602a62/FLAGb9b012d6a [2021-11-23 12:44:09,182 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:44:09,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-23 12:44:09,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/data/be83d5bd1/5a7d926ba8194ff7a7f5d798b3602a62/FLAGb9b012d6a [2021-11-23 12:44:09,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/data/be83d5bd1/5a7d926ba8194ff7a7f5d798b3602a62 [2021-11-23 12:44:09,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:44:09,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:44:09,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:09,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:44:09,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:44:09,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:09" (1/1) ... [2021-11-23 12:44:09,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69952c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:09, skipping insertion in model container [2021-11-23 12:44:09,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:44:09" (1/1) ... [2021-11-23 12:44:09,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:44:09,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:44:10,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-23 12:44:10,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-23 12:44:11,516 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,532 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:11,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:12,210 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 12:44:12,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 12:44:12,213 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 12:44:12,214 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 12:44:12,217 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 12:44:12,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 12:44:12,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 12:44:12,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 12:44:12,220 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 12:44:12,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 12:44:12,488 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 12:44:12,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:12,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:12,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:12,928 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:44:12,945 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-11-23 12:44:12,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-11-23 12:44:13,021 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,024 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,025 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,026 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,028 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,044 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,044 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,108 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 12:44:13,109 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 12:44:13,110 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 12:44:13,111 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 12:44:13,112 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 12:44:13,112 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 12:44:13,113 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 12:44:13,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 12:44:13,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 12:44:13,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 12:44:13,152 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 12:44:13,247 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,247 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:44:13,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:44:13,657 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:44:13,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13 WrapperNode [2021-11-23 12:44:13,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:44:13,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:13,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:44:13,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:44:13,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:13,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,064 INFO L137 Inliner]: procedures = 691, calls = 2668, calls flagged for inlining = 970, calls inlined = 75, statements flattened = 1705 [2021-11-23 12:44:14,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:44:14,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:44:14,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:44:14,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:44:14,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:44:14,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:44:14,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:44:14,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:44:14,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (1/1) ... [2021-11-23 12:44:14,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:44:14,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:14,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:44:14,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:44:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:44:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:44:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:44:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:44:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:44:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:44:14,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:44:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:44:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:44:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:44:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:44:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:44:14,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:44:14,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:44:17,035 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:44:17,048 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:44:17,048 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:44:17,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:17 BoogieIcfgContainer [2021-11-23 12:44:17,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:44:17,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:44:17,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:44:17,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:44:17,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:44:09" (1/3) ... [2021-11-23 12:44:17,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd811da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:44:17, skipping insertion in model container [2021-11-23 12:44:17,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:44:13" (2/3) ... [2021-11-23 12:44:17,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd811da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:44:17, skipping insertion in model container [2021-11-23 12:44:17,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:44:17" (3/3) ... [2021-11-23 12:44:17,063 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-23 12:44:17,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:44:17,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-23 12:44:17,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:44:17,142 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 [2021-11-23 12:44:17,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-23 12:44:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 279 states have (on average 1.4838709677419355) internal successors, (414), 298 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 12:44:17,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:17,186 INFO L514 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] [2021-11-23 12:44:17,187 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 28296255, now seen corresponding path program 1 times [2021-11-23 12:44:17,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:17,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508987315] [2021-11-23 12:44:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:17,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:18,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508987315] [2021-11-23 12:44:18,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508987315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:18,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:18,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:44:18,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579063563] [2021-11-23 12:44:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:18,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:44:18,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:44:18,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:44:18,094 INFO L87 Difference]: Start difference. First operand has 299 states, 279 states have (on average 1.4838709677419355) internal successors, (414), 298 states have internal predecessors, (414), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 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) [2021-11-23 12:44:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:18,154 INFO L93 Difference]: Finished difference Result 590 states and 819 transitions. [2021-11-23 12:44:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:44:18,156 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 [2021-11-23 12:44:18,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:18,172 INFO L225 Difference]: With dead ends: 590 [2021-11-23 12:44:18,172 INFO L226 Difference]: Without dead ends: 292 [2021-11-23 12:44:18,177 INFO L932 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 [2021-11-23 12:44:18,181 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:18,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-23 12:44:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-11-23 12:44:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 273 states have (on average 1.347985347985348) internal successors, (368), 291 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 368 transitions. [2021-11-23 12:44:18,252 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 368 transitions. Word has length 64 [2021-11-23 12:44:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:18,253 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 368 transitions. [2021-11-23 12:44:18,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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) [2021-11-23 12:44:18,254 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 368 transitions. [2021-11-23 12:44:18,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 12:44:18,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:18,258 INFO L514 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] [2021-11-23 12:44:18,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:44:18,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1015264321, now seen corresponding path program 1 times [2021-11-23 12:44:18,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:18,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276928044] [2021-11-23 12:44:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:18,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:18,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:18,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276928044] [2021-11-23 12:44:18,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276928044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:18,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:18,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:44:18,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130099118] [2021-11-23 12:44:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:18,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:18,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:18,572 INFO L87 Difference]: Start difference. First operand 292 states and 368 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-23 12:44:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:18,783 INFO L93 Difference]: Finished difference Result 554 states and 698 transitions. [2021-11-23 12:44:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:18,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2021-11-23 12:44:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:18,792 INFO L225 Difference]: With dead ends: 554 [2021-11-23 12:44:18,793 INFO L226 Difference]: Without dead ends: 292 [2021-11-23 12:44:18,799 INFO L932 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 [2021-11-23 12:44:18,806 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 506 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:18,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 508 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:44:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-23 12:44:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-11-23 12:44:18,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 273 states have (on average 1.336996336996337) internal successors, (365), 291 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 365 transitions. [2021-11-23 12:44:18,857 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 365 transitions. Word has length 64 [2021-11-23 12:44:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:18,858 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 365 transitions. [2021-11-23 12:44:18,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-23 12:44:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 365 transitions. [2021-11-23 12:44:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 12:44:18,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:18,876 INFO L514 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] [2021-11-23 12:44:18,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:44:18,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2079484297, now seen corresponding path program 1 times [2021-11-23 12:44:18,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:18,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253202074] [2021-11-23 12:44:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:18,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:19,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:19,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253202074] [2021-11-23 12:44:19,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253202074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:19,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:19,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:44:19,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284546913] [2021-11-23 12:44:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:19,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:19,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:19,257 INFO L87 Difference]: Start difference. First operand 292 states and 365 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:19,580 INFO L93 Difference]: Finished difference Result 761 states and 985 transitions. [2021-11-23 12:44:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 12:44:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:19,586 INFO L225 Difference]: With dead ends: 761 [2021-11-23 12:44:19,586 INFO L226 Difference]: Without dead ends: 490 [2021-11-23 12:44:19,587 INFO L932 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 [2021-11-23 12:44:19,595 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 266 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:19,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1274 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:44:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-23 12:44:19,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 310. [2021-11-23 12:44:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 291 states have (on average 1.3161512027491409) internal successors, (383), 309 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 383 transitions. [2021-11-23 12:44:19,631 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 383 transitions. Word has length 76 [2021-11-23 12:44:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:19,632 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 383 transitions. [2021-11-23 12:44:19,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 383 transitions. [2021-11-23 12:44:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 12:44:19,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:19,635 INFO L514 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] [2021-11-23 12:44:19,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:44:19,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -818567047, now seen corresponding path program 1 times [2021-11-23 12:44:19,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:19,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368973985] [2021-11-23 12:44:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:19,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:19,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368973985] [2021-11-23 12:44:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368973985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:19,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:19,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:44:19,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76783075] [2021-11-23 12:44:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:19,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:19,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:19,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:19,875 INFO L87 Difference]: Start difference. First operand 310 states and 383 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:20,155 INFO L93 Difference]: Finished difference Result 679 states and 854 transitions. [2021-11-23 12:44:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:20,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 12:44:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:20,160 INFO L225 Difference]: With dead ends: 679 [2021-11-23 12:44:20,160 INFO L226 Difference]: Without dead ends: 400 [2021-11-23 12:44:20,161 INFO L932 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 [2021-11-23 12:44:20,162 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 198 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:20,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 983 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:44:20,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-23 12:44:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 328. [2021-11-23 12:44:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 309 states have (on average 1.2977346278317152) internal successors, (401), 327 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 401 transitions. [2021-11-23 12:44:20,192 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 401 transitions. Word has length 76 [2021-11-23 12:44:20,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:20,193 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 401 transitions. [2021-11-23 12:44:20,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 401 transitions. [2021-11-23 12:44:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 12:44:20,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:20,200 INFO L514 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] [2021-11-23 12:44:20,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:44:20,205 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1654783221, now seen corresponding path program 1 times [2021-11-23 12:44:20,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:20,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854186758] [2021-11-23 12:44:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:20,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:20,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:20,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854186758] [2021-11-23 12:44:20,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854186758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:20,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:20,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:44:20,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001236039] [2021-11-23 12:44:20,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:20,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:20,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:20,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:20,500 INFO L87 Difference]: Start difference. First operand 328 states and 401 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:20,645 INFO L93 Difference]: Finished difference Result 590 states and 721 transitions. [2021-11-23 12:44:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:20,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 12:44:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:20,649 INFO L225 Difference]: With dead ends: 590 [2021-11-23 12:44:20,649 INFO L226 Difference]: Without dead ends: 328 [2021-11-23 12:44:20,650 INFO L932 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 [2021-11-23 12:44:20,651 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 325 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:20,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 510 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-23 12:44:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-23 12:44:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 309 states have (on average 1.2912621359223302) internal successors, (399), 327 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 399 transitions. [2021-11-23 12:44:20,665 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 399 transitions. Word has length 76 [2021-11-23 12:44:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:20,665 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 399 transitions. [2021-11-23 12:44:20,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 399 transitions. [2021-11-23 12:44:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 12:44:20,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:20,667 INFO L514 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] [2021-11-23 12:44:20,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:44:20,668 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash 865605514, now seen corresponding path program 1 times [2021-11-23 12:44:20,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:20,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682314497] [2021-11-23 12:44:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:20,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:21,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:21,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682314497] [2021-11-23 12:44:21,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682314497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:21,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:21,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:44:21,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332103370] [2021-11-23 12:44:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:21,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:44:21,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:44:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:44:21,038 INFO L87 Difference]: Start difference. First operand 328 states and 399 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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) [2021-11-23 12:44:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:21,266 INFO L93 Difference]: Finished difference Result 517 states and 623 transitions. [2021-11-23 12:44:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:44:21,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 [2021-11-23 12:44:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:21,269 INFO L225 Difference]: With dead ends: 517 [2021-11-23 12:44:21,270 INFO L226 Difference]: Without dead ends: 328 [2021-11-23 12:44:21,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:44:21,271 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 943 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:21,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 696 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:44:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-23 12:44:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-23 12:44:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 309 states have (on average 1.2815533980582525) internal successors, (396), 327 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 396 transitions. [2021-11-23 12:44:21,285 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 396 transitions. Word has length 82 [2021-11-23 12:44:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:21,286 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 396 transitions. [2021-11-23 12:44:21,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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) [2021-11-23 12:44:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 396 transitions. [2021-11-23 12:44:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 12:44:21,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:21,288 INFO L514 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] [2021-11-23 12:44:21,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:44:21,288 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195350, now seen corresponding path program 1 times [2021-11-23 12:44:21,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:21,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963031258] [2021-11-23 12:44:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:21,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:21,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:21,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963031258] [2021-11-23 12:44:21,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963031258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:21,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:21,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:44:21,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42494046] [2021-11-23 12:44:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:21,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:44:21,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:44:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:44:21,573 INFO L87 Difference]: Start difference. First operand 328 states and 396 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2021-11-23 12:44:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:21,636 INFO L93 Difference]: Finished difference Result 538 states and 645 transitions. [2021-11-23 12:44:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:44:21,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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 [2021-11-23 12:44:21,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:21,640 INFO L225 Difference]: With dead ends: 538 [2021-11-23 12:44:21,640 INFO L226 Difference]: Without dead ends: 328 [2021-11-23 12:44:21,641 INFO L932 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 [2021-11-23 12:44:21,642 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 213 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:21,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 608 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:21,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-23 12:44:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-23 12:44:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 309 states have (on average 1.27831715210356) internal successors, (395), 327 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 395 transitions. [2021-11-23 12:44:21,656 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 395 transitions. Word has length 94 [2021-11-23 12:44:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:21,656 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 395 transitions. [2021-11-23 12:44:21,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2021-11-23 12:44:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 395 transitions. [2021-11-23 12:44:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 12:44:21,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:21,658 INFO L514 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] [2021-11-23 12:44:21,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:44:21,659 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1700306559, now seen corresponding path program 1 times [2021-11-23 12:44:21,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:21,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185970918] [2021-11-23 12:44:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:21,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:22,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:22,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185970918] [2021-11-23 12:44:22,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185970918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:22,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:22,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:44:22,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119560604] [2021-11-23 12:44:22,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:22,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:44:22,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:22,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:44:22,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:44:22,024 INFO L87 Difference]: Start difference. First operand 328 states and 395 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2021-11-23 12:44:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:22,489 INFO L93 Difference]: Finished difference Result 541 states and 632 transitions. [2021-11-23 12:44:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:44:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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 [2021-11-23 12:44:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:22,494 INFO L225 Difference]: With dead ends: 541 [2021-11-23 12:44:22,494 INFO L226 Difference]: Without dead ends: 533 [2021-11-23 12:44:22,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:44:22,495 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 387 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:22,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1373 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:44:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-23 12:44:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 344. [2021-11-23 12:44:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 325 states have (on average 1.2646153846153847) internal successors, (411), 343 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 411 transitions. [2021-11-23 12:44:22,515 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 411 transitions. Word has length 100 [2021-11-23 12:44:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:22,517 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 411 transitions. [2021-11-23 12:44:22,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2021-11-23 12:44:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 411 transitions. [2021-11-23 12:44:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 12:44:22,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:22,524 INFO L514 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] [2021-11-23 12:44:22,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:44:22,524 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash -989785033, now seen corresponding path program 1 times [2021-11-23 12:44:22,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:22,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156754683] [2021-11-23 12:44:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:22,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:23,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156754683] [2021-11-23 12:44:23,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156754683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:23,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:23,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:44:23,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059674966] [2021-11-23 12:44:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:23,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:44:23,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:44:23,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:44:23,377 INFO L87 Difference]: Start difference. First operand 344 states and 411 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2021-11-23 12:44:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:24,560 INFO L93 Difference]: Finished difference Result 931 states and 1115 transitions. [2021-11-23 12:44:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:44:24,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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 [2021-11-23 12:44:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:24,566 INFO L225 Difference]: With dead ends: 931 [2021-11-23 12:44:24,566 INFO L226 Difference]: Without dead ends: 619 [2021-11-23 12:44:24,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:44:24,570 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 938 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:24,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 1119 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 12:44:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-23 12:44:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 371. [2021-11-23 12:44:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 352 states have (on average 1.2698863636363635) internal successors, (447), 370 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 447 transitions. [2021-11-23 12:44:24,599 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 447 transitions. Word has length 104 [2021-11-23 12:44:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:24,600 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 447 transitions. [2021-11-23 12:44:24,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2021-11-23 12:44:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 447 transitions. [2021-11-23 12:44:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 12:44:24,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:24,606 INFO L514 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] [2021-11-23 12:44:24,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:44:24,607 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:24,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash -309726663, now seen corresponding path program 1 times [2021-11-23 12:44:24,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:24,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971587441] [2021-11-23 12:44:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:24,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:25,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:25,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971587441] [2021-11-23 12:44:25,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971587441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:25,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:25,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 12:44:25,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154757136] [2021-11-23 12:44:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:25,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:44:25,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:25,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:44:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:44:25,701 INFO L87 Difference]: Start difference. First operand 371 states and 447 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2021-11-23 12:44:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:29,263 INFO L93 Difference]: Finished difference Result 1169 states and 1409 transitions. [2021-11-23 12:44:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 12:44:29,264 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 [2021-11-23 12:44:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:29,271 INFO L225 Difference]: With dead ends: 1169 [2021-11-23 12:44:29,271 INFO L226 Difference]: Without dead ends: 959 [2021-11-23 12:44:29,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-11-23 12:44:29,274 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1428 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:29,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 3066 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 12:44:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-23 12:44:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 404. [2021-11-23 12:44:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 385 states have (on average 1.2675324675324675) internal successors, (488), 403 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 488 transitions. [2021-11-23 12:44:29,302 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 488 transitions. Word has length 104 [2021-11-23 12:44:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:29,303 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 488 transitions. [2021-11-23 12:44:29,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2021-11-23 12:44:29,304 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 488 transitions. [2021-11-23 12:44:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 12:44:29,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:29,306 INFO L514 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] [2021-11-23 12:44:29,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:44:29,307 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:29,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash 770806147, now seen corresponding path program 1 times [2021-11-23 12:44:29,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612649708] [2021-11-23 12:44:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:29,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:30,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612649708] [2021-11-23 12:44:30,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612649708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:30,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:30,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:44:30,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650958699] [2021-11-23 12:44:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:30,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:44:30,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:44:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:44:30,067 INFO L87 Difference]: Start difference. First operand 404 states and 488 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:32,208 INFO L93 Difference]: Finished difference Result 1076 states and 1307 transitions. [2021-11-23 12:44:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:44:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-23 12:44:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:32,215 INFO L225 Difference]: With dead ends: 1076 [2021-11-23 12:44:32,216 INFO L226 Difference]: Without dead ends: 850 [2021-11-23 12:44:32,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:44:32,218 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 922 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:32,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 2487 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 12:44:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-23 12:44:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 456. [2021-11-23 12:44:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 437 states have (on average 1.265446224256293) internal successors, (553), 455 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 553 transitions. [2021-11-23 12:44:32,246 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 553 transitions. Word has length 108 [2021-11-23 12:44:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:32,247 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 553 transitions. [2021-11-23 12:44:32,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 553 transitions. [2021-11-23 12:44:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 12:44:32,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:32,249 INFO L514 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] [2021-11-23 12:44:32,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:44:32,250 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash 698419589, now seen corresponding path program 1 times [2021-11-23 12:44:32,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:32,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293453410] [2021-11-23 12:44:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:32,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:33,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:33,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293453410] [2021-11-23 12:44:33,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293453410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:33,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:33,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:44:33,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991391014] [2021-11-23 12:44:33,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:33,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:44:33,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:33,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:44:33,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:44:33,009 INFO L87 Difference]: Start difference. First operand 456 states and 553 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:35,466 INFO L93 Difference]: Finished difference Result 1062 states and 1284 transitions. [2021-11-23 12:44:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 12:44:35,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-23 12:44:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:35,473 INFO L225 Difference]: With dead ends: 1062 [2021-11-23 12:44:35,473 INFO L226 Difference]: Without dead ends: 843 [2021-11-23 12:44:35,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:44:35,476 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 939 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:35,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 2396 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 12:44:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-23 12:44:35,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 460. [2021-11-23 12:44:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 441 states have (on average 1.2630385487528344) internal successors, (557), 459 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 557 transitions. [2021-11-23 12:44:35,524 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 557 transitions. Word has length 108 [2021-11-23 12:44:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:35,525 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 557 transitions. [2021-11-23 12:44:35,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 557 transitions. [2021-11-23 12:44:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 12:44:35,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:35,527 INFO L514 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] [2021-11-23 12:44:35,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:44:35,527 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash 188946499, now seen corresponding path program 1 times [2021-11-23 12:44:35,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:35,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100063240] [2021-11-23 12:44:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:35,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:36,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:36,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100063240] [2021-11-23 12:44:36,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100063240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:36,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:36,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:44:36,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038297619] [2021-11-23 12:44:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:36,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:44:36,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:44:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:36,055 INFO L87 Difference]: Start difference. First operand 460 states and 557 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:37,034 INFO L93 Difference]: Finished difference Result 1135 states and 1366 transitions. [2021-11-23 12:44:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:37,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-23 12:44:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:37,040 INFO L225 Difference]: With dead ends: 1135 [2021-11-23 12:44:37,040 INFO L226 Difference]: Without dead ends: 706 [2021-11-23 12:44:37,042 INFO L932 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 [2021-11-23 12:44:37,043 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 259 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:37,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 1483 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:44:37,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-23 12:44:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 491. [2021-11-23 12:44:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 472 states have (on average 1.2457627118644068) internal successors, (588), 490 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 588 transitions. [2021-11-23 12:44:37,072 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 588 transitions. Word has length 108 [2021-11-23 12:44:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:37,072 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 588 transitions. [2021-11-23 12:44:37,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 588 transitions. [2021-11-23 12:44:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 12:44:37,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:37,075 INFO L514 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] [2021-11-23 12:44:37,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:44:37,075 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 266145457, now seen corresponding path program 1 times [2021-11-23 12:44:37,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:37,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572865510] [2021-11-23 12:44:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:37,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:38,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:38,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572865510] [2021-11-23 12:44:38,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572865510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:38,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:38,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 12:44:38,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392555975] [2021-11-23 12:44:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:38,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 12:44:38,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 12:44:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:44:38,153 INFO L87 Difference]: Start difference. First operand 491 states and 588 transitions. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:44,114 INFO L93 Difference]: Finished difference Result 1943 states and 2289 transitions. [2021-11-23 12:44:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-23 12:44:44,115 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-23 12:44:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:44,128 INFO L225 Difference]: With dead ends: 1943 [2021-11-23 12:44:44,129 INFO L226 Difference]: Without dead ends: 1721 [2021-11-23 12:44:44,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=610, Invalid=1840, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 12:44:44,132 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 4807 mSDsluCounter, 3389 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:44,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4807 Valid, 3678 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 12:44:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-11-23 12:44:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 555. [2021-11-23 12:44:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 536 states have (on average 1.2462686567164178) internal successors, (668), 554 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 668 transitions. [2021-11-23 12:44:44,179 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 668 transitions. Word has length 108 [2021-11-23 12:44:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:44,180 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 668 transitions. [2021-11-23 12:44:44,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 668 transitions. [2021-11-23 12:44:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 12:44:44,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:44,183 INFO L514 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, 1, 1] [2021-11-23 12:44:44,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:44:44,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:44,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash -203984054, now seen corresponding path program 1 times [2021-11-23 12:44:44,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:44,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991658158] [2021-11-23 12:44:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:44,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:45,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:45,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991658158] [2021-11-23 12:44:45,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991658158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:45,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:45,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:44:45,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210611959] [2021-11-23 12:44:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:45,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:44:45,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:45,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:44:45,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:44:45,095 INFO L87 Difference]: Start difference. First operand 555 states and 668 transitions. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:49,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:49,413 INFO L93 Difference]: Finished difference Result 1957 states and 2278 transitions. [2021-11-23 12:44:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 12:44:49,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-23 12:44:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:49,430 INFO L225 Difference]: With dead ends: 1957 [2021-11-23 12:44:49,430 INFO L226 Difference]: Without dead ends: 1735 [2021-11-23 12:44:49,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-11-23 12:44:49,436 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1356 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:49,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1356 Valid, 4304 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 12:44:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-11-23 12:44:49,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 710. [2021-11-23 12:44:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 691 states have (on average 1.2590448625180897) internal successors, (870), 709 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 870 transitions. [2021-11-23 12:44:49,509 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 870 transitions. Word has length 110 [2021-11-23 12:44:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:49,509 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 870 transitions. [2021-11-23 12:44:49,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:49,510 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 870 transitions. [2021-11-23 12:44:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 12:44:49,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:49,513 INFO L514 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, 1, 1] [2021-11-23 12:44:49,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:44:49,513 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1719243980, now seen corresponding path program 1 times [2021-11-23 12:44:49,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:49,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032491036] [2021-11-23 12:44:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:49,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:50,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:50,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032491036] [2021-11-23 12:44:50,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032491036] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:50,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:50,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 12:44:50,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325338968] [2021-11-23 12:44:50,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:50,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:44:50,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:44:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:44:50,744 INFO L87 Difference]: Start difference. First operand 710 states and 870 transitions. Second operand has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:54,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:54,781 INFO L93 Difference]: Finished difference Result 1601 states and 1926 transitions. [2021-11-23 12:44:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 12:44:54,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-23 12:44:54,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:54,789 INFO L225 Difference]: With dead ends: 1601 [2021-11-23 12:44:54,789 INFO L226 Difference]: Without dead ends: 1379 [2021-11-23 12:44:54,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=302, Invalid=1104, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 12:44:54,792 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 1780 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:54,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 4143 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 12:44:54,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2021-11-23 12:44:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 725. [2021-11-23 12:44:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 706 states have (on average 1.2563739376770537) internal successors, (887), 724 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 887 transitions. [2021-11-23 12:44:54,837 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 887 transitions. Word has length 110 [2021-11-23 12:44:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:54,838 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 887 transitions. [2021-11-23 12:44:54,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 887 transitions. [2021-11-23 12:44:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 12:44:54,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:54,841 INFO L514 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, 1, 1, 1] [2021-11-23 12:44:54,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:44:54,842 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:54,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash 728122019, now seen corresponding path program 1 times [2021-11-23 12:44:54,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:54,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168585570] [2021-11-23 12:44:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:54,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:55,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:55,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168585570] [2021-11-23 12:44:55,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168585570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:55,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:55,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:44:55,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723138737] [2021-11-23 12:44:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:55,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:44:55,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:44:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:44:55,761 INFO L87 Difference]: Start difference. First operand 725 states and 887 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:57,875 INFO L93 Difference]: Finished difference Result 1853 states and 2262 transitions. [2021-11-23 12:44:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:44:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 12:44:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:57,885 INFO L225 Difference]: With dead ends: 1853 [2021-11-23 12:44:57,885 INFO L226 Difference]: Without dead ends: 1358 [2021-11-23 12:44:57,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=514, Unknown=0, NotChecked=0, Total=756 [2021-11-23 12:44:57,888 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 2145 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:57,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 1916 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 12:44:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-11-23 12:44:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 738. [2021-11-23 12:44:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 719 states have (on average 1.2559109874826146) internal successors, (903), 737 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 903 transitions. [2021-11-23 12:44:57,939 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 903 transitions. Word has length 111 [2021-11-23 12:44:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:57,940 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 903 transitions. [2021-11-23 12:44:57,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 903 transitions. [2021-11-23 12:44:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 12:44:57,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:57,943 INFO L514 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, 1, 1, 1] [2021-11-23 12:44:57,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:44:57,944 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:44:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:57,945 INFO L85 PathProgramCache]: Analyzing trace with hash 67644375, now seen corresponding path program 1 times [2021-11-23 12:44:57,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:57,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330362560] [2021-11-23 12:44:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:57,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:58,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:58,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330362560] [2021-11-23 12:44:58,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330362560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:58,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:58,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:44:58,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092117054] [2021-11-23 12:44:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:58,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:44:58,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:58,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:44:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:44:58,779 INFO L87 Difference]: Start difference. First operand 738 states and 903 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:00,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:00,376 INFO L93 Difference]: Finished difference Result 1961 states and 2375 transitions. [2021-11-23 12:45:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 12:45:00,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 12:45:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:00,385 INFO L225 Difference]: With dead ends: 1961 [2021-11-23 12:45:00,386 INFO L226 Difference]: Without dead ends: 1461 [2021-11-23 12:45:00,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-11-23 12:45:00,389 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 1988 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:00,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 1791 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 12:45:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-11-23 12:45:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 798. [2021-11-23 12:45:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 779 states have (on average 1.251604621309371) internal successors, (975), 797 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 975 transitions. [2021-11-23 12:45:00,445 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 975 transitions. Word has length 111 [2021-11-23 12:45:00,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:00,446 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 975 transitions. [2021-11-23 12:45:00,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 975 transitions. [2021-11-23 12:45:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 12:45:00,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:00,450 INFO L514 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, 1, 1, 1, 1] [2021-11-23 12:45:00,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:45:00,450 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash -310863795, now seen corresponding path program 1 times [2021-11-23 12:45:00,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:00,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105802351] [2021-11-23 12:45:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:00,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:02,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:02,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105802351] [2021-11-23 12:45:02,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105802351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:02,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:02,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-23 12:45:02,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018702311] [2021-11-23 12:45:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:02,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 12:45:02,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 12:45:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-11-23 12:45:02,070 INFO L87 Difference]: Start difference. First operand 798 states and 975 transitions. Second operand has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:06,932 INFO L93 Difference]: Finished difference Result 1435 states and 1728 transitions. [2021-11-23 12:45:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 12:45:06,933 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-23 12:45:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:06,939 INFO L225 Difference]: With dead ends: 1435 [2021-11-23 12:45:06,939 INFO L226 Difference]: Without dead ends: 1082 [2021-11-23 12:45:06,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=471, Invalid=1691, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 12:45:06,942 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 3492 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3492 SdHoareTripleChecker+Valid, 3831 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:06,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3492 Valid, 3831 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 12:45:06,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-11-23 12:45:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 931. [2021-11-23 12:45:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 912 states have (on average 1.2521929824561404) internal successors, (1142), 930 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1142 transitions. [2021-11-23 12:45:07,005 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1142 transitions. Word has length 112 [2021-11-23 12:45:07,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:07,006 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1142 transitions. [2021-11-23 12:45:07,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:07,006 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1142 transitions. [2021-11-23 12:45:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 12:45:07,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:07,009 INFO L514 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, 1, 1, 1, 1] [2021-11-23 12:45:07,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 12:45:07,010 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash 177449425, now seen corresponding path program 1 times [2021-11-23 12:45:07,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:07,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935885031] [2021-11-23 12:45:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:07,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:07,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:07,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935885031] [2021-11-23 12:45:07,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935885031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:07,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:07,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:45:07,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438122619] [2021-11-23 12:45:07,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:07,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:45:07,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:45:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:07,462 INFO L87 Difference]: Start difference. First operand 931 states and 1142 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:08,025 INFO L93 Difference]: Finished difference Result 2068 states and 2505 transitions. [2021-11-23 12:45:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:45:08,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-23 12:45:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:08,032 INFO L225 Difference]: With dead ends: 2068 [2021-11-23 12:45:08,033 INFO L226 Difference]: Without dead ends: 1089 [2021-11-23 12:45:08,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:45:08,036 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 197 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:08,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 2277 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:45:08,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-11-23 12:45:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 852. [2021-11-23 12:45:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 833 states have (on average 1.2304921968787514) internal successors, (1025), 851 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1025 transitions. [2021-11-23 12:45:08,108 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1025 transitions. Word has length 112 [2021-11-23 12:45:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:08,109 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1025 transitions. [2021-11-23 12:45:08,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1025 transitions. [2021-11-23 12:45:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 12:45:08,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:08,112 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:08,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 12:45:08,113 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:08,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2049342642, now seen corresponding path program 1 times [2021-11-23 12:45:08,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:08,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423673722] [2021-11-23 12:45:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:08,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:08,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:08,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423673722] [2021-11-23 12:45:08,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423673722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:08,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:08,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:45:08,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439766527] [2021-11-23 12:45:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:08,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:45:08,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:08,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:45:08,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:45:08,945 INFO L87 Difference]: Start difference. First operand 852 states and 1025 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:10,867 INFO L93 Difference]: Finished difference Result 1837 states and 2204 transitions. [2021-11-23 12:45:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 12:45:10,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-23 12:45:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:10,875 INFO L225 Difference]: With dead ends: 1837 [2021-11-23 12:45:10,876 INFO L226 Difference]: Without dead ends: 1657 [2021-11-23 12:45:10,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:45:10,878 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 882 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:10,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 3200 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 12:45:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-11-23 12:45:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 931. [2021-11-23 12:45:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 912 states have (on average 1.2236842105263157) internal successors, (1116), 930 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1116 transitions. [2021-11-23 12:45:10,956 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1116 transitions. Word has length 114 [2021-11-23 12:45:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:10,957 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1116 transitions. [2021-11-23 12:45:10,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1116 transitions. [2021-11-23 12:45:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 12:45:10,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:10,961 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:10,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 12:45:10,962 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2036869072, now seen corresponding path program 1 times [2021-11-23 12:45:10,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:10,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899913221] [2021-11-23 12:45:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:10,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:11,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:11,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899913221] [2021-11-23 12:45:11,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899913221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:45:11,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960108830] [2021-11-23 12:45:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:11,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:11,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:11,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:45:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:12,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 12:45:12,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:13,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 12:45:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:45:13,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:45:13,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960108830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:13,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:45:13,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-11-23 12:45:13,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78941888] [2021-11-23 12:45:13,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:13,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:45:13,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:45:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:45:13,504 INFO L87 Difference]: Start difference. First operand 931 states and 1116 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:14,482 INFO L93 Difference]: Finished difference Result 1885 states and 2233 transitions. [2021-11-23 12:45:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:45:14,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 12:45:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:14,492 INFO L225 Difference]: With dead ends: 1885 [2021-11-23 12:45:14,492 INFO L226 Difference]: Without dead ends: 1092 [2021-11-23 12:45:14,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:45:14,497 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1529 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:14,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1333 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:45:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-23 12:45:14,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 933. [2021-11-23 12:45:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 914 states have (on average 1.2210065645514223) internal successors, (1116), 932 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1116 transitions. [2021-11-23 12:45:14,616 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1116 transitions. Word has length 116 [2021-11-23 12:45:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:14,616 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1116 transitions. [2021-11-23 12:45:14,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1116 transitions. [2021-11-23 12:45:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:45:14,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:14,619 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:14,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:14,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-23 12:45:14,820 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:14,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:14,821 INFO L85 PathProgramCache]: Analyzing trace with hash 714030861, now seen corresponding path program 1 times [2021-11-23 12:45:14,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:14,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870832934] [2021-11-23 12:45:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:14,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:15,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:15,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870832934] [2021-11-23 12:45:15,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870832934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:15,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:15,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:45:15,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853538261] [2021-11-23 12:45:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:15,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:45:15,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:45:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:45:15,014 INFO L87 Difference]: Start difference. First operand 933 states and 1116 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:15,260 INFO L93 Difference]: Finished difference Result 1795 states and 2135 transitions. [2021-11-23 12:45:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:45:15,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:45:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:15,266 INFO L225 Difference]: With dead ends: 1795 [2021-11-23 12:45:15,267 INFO L226 Difference]: Without dead ends: 860 [2021-11-23 12:45:15,269 INFO L932 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 [2021-11-23 12:45:15,269 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 41 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:15,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 946 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:45:15,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-23 12:45:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 796. [2021-11-23 12:45:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 777 states have (on average 1.202059202059202) internal successors, (934), 795 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 934 transitions. [2021-11-23 12:45:15,332 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 934 transitions. Word has length 119 [2021-11-23 12:45:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:15,332 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 934 transitions. [2021-11-23 12:45:15,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 934 transitions. [2021-11-23 12:45:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:45:15,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:15,336 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:15,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 12:45:15,337 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash 290384139, now seen corresponding path program 1 times [2021-11-23 12:45:15,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:15,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932918475] [2021-11-23 12:45:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:15,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:15,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:15,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932918475] [2021-11-23 12:45:15,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932918475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:15,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:15,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:45:15,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000815670] [2021-11-23 12:45:15,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:15,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:45:15,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:45:15,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:45:15,908 INFO L87 Difference]: Start difference. First operand 796 states and 934 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:17,358 INFO L93 Difference]: Finished difference Result 1814 states and 2118 transitions. [2021-11-23 12:45:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:45:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:45:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:17,364 INFO L225 Difference]: With dead ends: 1814 [2021-11-23 12:45:17,364 INFO L226 Difference]: Without dead ends: 1050 [2021-11-23 12:45:17,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:45:17,367 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 842 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:17,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 1670 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 12:45:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-11-23 12:45:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 773. [2021-11-23 12:45:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 754 states have (on average 1.1923076923076923) internal successors, (899), 772 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 899 transitions. [2021-11-23 12:45:17,436 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 899 transitions. Word has length 119 [2021-11-23 12:45:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:17,436 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 899 transitions. [2021-11-23 12:45:17,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 899 transitions. [2021-11-23 12:45:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:45:17,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:17,440 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:17,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 12:45:17,441 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1160818763, now seen corresponding path program 1 times [2021-11-23 12:45:17,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:17,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600909149] [2021-11-23 12:45:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:17,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:18,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:18,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600909149] [2021-11-23 12:45:18,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600909149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:18,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:18,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:45:18,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048171742] [2021-11-23 12:45:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:18,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:45:18,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:45:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:45:18,159 INFO L87 Difference]: Start difference. First operand 773 states and 899 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:19,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:19,276 INFO L93 Difference]: Finished difference Result 1740 states and 2008 transitions. [2021-11-23 12:45:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:45:19,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:45:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:19,285 INFO L225 Difference]: With dead ends: 1740 [2021-11-23 12:45:19,286 INFO L226 Difference]: Without dead ends: 1348 [2021-11-23 12:45:19,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:45:19,288 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 385 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:19,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 2385 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:45:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-11-23 12:45:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 773. [2021-11-23 12:45:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 754 states have (on average 1.1923076923076923) internal successors, (899), 772 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 899 transitions. [2021-11-23 12:45:19,357 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 899 transitions. Word has length 119 [2021-11-23 12:45:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:19,358 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 899 transitions. [2021-11-23 12:45:19,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 899 transitions. [2021-11-23 12:45:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:45:19,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:19,361 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:19,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 12:45:19,362 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -750223795, now seen corresponding path program 1 times [2021-11-23 12:45:19,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:19,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537949123] [2021-11-23 12:45:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:19,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:20,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:20,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537949123] [2021-11-23 12:45:20,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537949123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:20,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:20,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:45:20,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112730409] [2021-11-23 12:45:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:20,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:45:20,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:45:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:45:20,483 INFO L87 Difference]: Start difference. First operand 773 states and 899 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:22,628 INFO L93 Difference]: Finished difference Result 1777 states and 2077 transitions. [2021-11-23 12:45:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:45:22,630 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:45:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:22,637 INFO L225 Difference]: With dead ends: 1777 [2021-11-23 12:45:22,637 INFO L226 Difference]: Without dead ends: 1546 [2021-11-23 12:45:22,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-11-23 12:45:22,639 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1124 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:22,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 3643 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 12:45:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-11-23 12:45:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 782. [2021-11-23 12:45:22,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1913499344692005) internal successors, (909), 781 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 909 transitions. [2021-11-23 12:45:22,702 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 909 transitions. Word has length 119 [2021-11-23 12:45:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:22,702 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 909 transitions. [2021-11-23 12:45:22,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 909 transitions. [2021-11-23 12:45:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:45:22,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:22,705 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:22,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 12:45:22,706 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:22,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1779583093, now seen corresponding path program 1 times [2021-11-23 12:45:22,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:22,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242111814] [2021-11-23 12:45:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:22,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:23,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:23,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242111814] [2021-11-23 12:45:23,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242111814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:23,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:23,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:45:23,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668482675] [2021-11-23 12:45:23,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:23,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:45:23,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:23,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:45:23,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:45:23,781 INFO L87 Difference]: Start difference. First operand 782 states and 909 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:24,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:24,363 INFO L93 Difference]: Finished difference Result 1534 states and 1784 transitions. [2021-11-23 12:45:24,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:45:24,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-23 12:45:24,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:24,367 INFO L225 Difference]: With dead ends: 1534 [2021-11-23 12:45:24,367 INFO L226 Difference]: Without dead ends: 846 [2021-11-23 12:45:24,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:45:24,369 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 602 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:24,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1881 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:45:24,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-11-23 12:45:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 782. [2021-11-23 12:45:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1900393184796854) internal successors, (908), 781 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 908 transitions. [2021-11-23 12:45:24,428 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 908 transitions. Word has length 119 [2021-11-23 12:45:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:24,429 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 908 transitions. [2021-11-23 12:45:24,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 908 transitions. [2021-11-23 12:45:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 12:45:24,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:24,432 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:24,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 12:45:24,433 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -80456344, now seen corresponding path program 1 times [2021-11-23 12:45:24,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:24,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687809882] [2021-11-23 12:45:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:24,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:24,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:24,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687809882] [2021-11-23 12:45:24,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687809882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:24,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:24,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:45:24,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294961721] [2021-11-23 12:45:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:24,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:45:24,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:24,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:45:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:45:24,990 INFO L87 Difference]: Start difference. First operand 782 states and 908 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:25,628 INFO L93 Difference]: Finished difference Result 1587 states and 1849 transitions. [2021-11-23 12:45:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:45:25,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-23 12:45:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:25,633 INFO L225 Difference]: With dead ends: 1587 [2021-11-23 12:45:25,634 INFO L226 Difference]: Without dead ends: 860 [2021-11-23 12:45:25,635 INFO L932 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 [2021-11-23 12:45:25,636 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 341 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:25,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 856 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 12:45:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-23 12:45:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 659. [2021-11-23 12:45:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 640 states have (on average 1.175) internal successors, (752), 658 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 752 transitions. [2021-11-23 12:45:25,686 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 752 transitions. Word has length 125 [2021-11-23 12:45:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:25,687 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 752 transitions. [2021-11-23 12:45:25,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:25,687 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 752 transitions. [2021-11-23 12:45:25,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 12:45:25,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:25,689 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:25,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 12:45:25,690 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash -898054676, now seen corresponding path program 1 times [2021-11-23 12:45:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:25,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806955011] [2021-11-23 12:45:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:25,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:26,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:26,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806955011] [2021-11-23 12:45:26,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806955011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:26,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:26,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:45:26,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622072565] [2021-11-23 12:45:26,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:26,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:45:26,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:26,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:45:26,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:45:26,833 INFO L87 Difference]: Start difference. First operand 659 states and 752 transitions. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:29,594 INFO L93 Difference]: Finished difference Result 1629 states and 1849 transitions. [2021-11-23 12:45:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:45:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-23 12:45:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:29,602 INFO L225 Difference]: With dead ends: 1629 [2021-11-23 12:45:29,603 INFO L226 Difference]: Without dead ends: 1410 [2021-11-23 12:45:29,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-11-23 12:45:29,605 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1030 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 4270 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:29,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 4270 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 12:45:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-11-23 12:45:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 698. [2021-11-23 12:45:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 679 states have (on average 1.1723122238586157) internal successors, (796), 697 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 796 transitions. [2021-11-23 12:45:29,678 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 796 transitions. Word has length 125 [2021-11-23 12:45:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:29,679 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 796 transitions. [2021-11-23 12:45:29,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 796 transitions. [2021-11-23 12:45:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 12:45:29,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:29,682 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:29,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 12:45:29,682 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 549726138, now seen corresponding path program 1 times [2021-11-23 12:45:29,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692661754] [2021-11-23 12:45:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:29,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:31,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:31,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692661754] [2021-11-23 12:45:31,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692661754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:31,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:31,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 12:45:31,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441319826] [2021-11-23 12:45:31,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:31,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 12:45:31,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 12:45:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-23 12:45:31,756 INFO L87 Difference]: Start difference. First operand 698 states and 796 transitions. Second operand has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:33,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:33,202 INFO L93 Difference]: Finished difference Result 1187 states and 1356 transitions. [2021-11-23 12:45:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 12:45:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-23 12:45:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:33,207 INFO L225 Difference]: With dead ends: 1187 [2021-11-23 12:45:33,207 INFO L226 Difference]: Without dead ends: 690 [2021-11-23 12:45:33,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 12:45:33,209 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 1109 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:33,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 1960 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:45:33,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-23 12:45:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 646. [2021-11-23 12:45:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 627 states have (on average 1.1738437001594897) internal successors, (736), 645 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 736 transitions. [2021-11-23 12:45:33,268 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 736 transitions. Word has length 125 [2021-11-23 12:45:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:33,268 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 736 transitions. [2021-11-23 12:45:33,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 736 transitions. [2021-11-23 12:45:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 12:45:33,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:33,271 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:33,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 12:45:33,272 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:33,273 INFO L85 PathProgramCache]: Analyzing trace with hash 871378847, now seen corresponding path program 1 times [2021-11-23 12:45:33,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:33,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540699785] [2021-11-23 12:45:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:33,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:34,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:34,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540699785] [2021-11-23 12:45:34,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540699785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:34,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:34,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 12:45:34,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432010240] [2021-11-23 12:45:34,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:34,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:45:34,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:34,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:45:34,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:45:34,100 INFO L87 Difference]: Start difference. First operand 646 states and 736 transitions. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:36,189 INFO L93 Difference]: Finished difference Result 1603 states and 1843 transitions. [2021-11-23 12:45:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 12:45:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-23 12:45:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:36,194 INFO L225 Difference]: With dead ends: 1603 [2021-11-23 12:45:36,194 INFO L226 Difference]: Without dead ends: 1361 [2021-11-23 12:45:36,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 12:45:36,196 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 1511 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:36,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 3173 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 12:45:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-11-23 12:45:36,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 656. [2021-11-23 12:45:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 637 states have (on average 1.1773940345368916) internal successors, (750), 655 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 750 transitions. [2021-11-23 12:45:36,262 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 750 transitions. Word has length 128 [2021-11-23 12:45:36,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:36,263 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 750 transitions. [2021-11-23 12:45:36,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 750 transitions. [2021-11-23 12:45:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 12:45:36,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:36,266 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:36,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 12:45:36,266 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1129544285, now seen corresponding path program 1 times [2021-11-23 12:45:36,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:36,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415137596] [2021-11-23 12:45:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:36,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:37,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:37,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415137596] [2021-11-23 12:45:37,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415137596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:37,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:37,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-23 12:45:37,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715281207] [2021-11-23 12:45:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:37,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 12:45:37,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 12:45:37,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:45:37,982 INFO L87 Difference]: Start difference. First operand 656 states and 750 transitions. Second operand has 21 states, 21 states have (on average 6.095238095238095) internal successors, (128), 21 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:41,824 INFO L93 Difference]: Finished difference Result 1618 states and 1839 transitions. [2021-11-23 12:45:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-23 12:45:41,824 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.095238095238095) internal successors, (128), 21 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-23 12:45:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:41,828 INFO L225 Difference]: With dead ends: 1618 [2021-11-23 12:45:41,828 INFO L226 Difference]: Without dead ends: 1327 [2021-11-23 12:45:41,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=467, Invalid=1695, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 12:45:41,831 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 1753 mSDsluCounter, 3931 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:41,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 4382 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 12:45:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-11-23 12:45:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 743. [2021-11-23 12:45:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 724 states have (on average 1.1685082872928176) internal successors, (846), 742 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 846 transitions. [2021-11-23 12:45:41,899 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 846 transitions. Word has length 128 [2021-11-23 12:45:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:41,899 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 846 transitions. [2021-11-23 12:45:41,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.095238095238095) internal successors, (128), 21 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 846 transitions. [2021-11-23 12:45:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 12:45:41,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:41,902 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:41,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 12:45:41,903 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:41,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash -903849761, now seen corresponding path program 1 times [2021-11-23 12:45:41,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:41,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681743204] [2021-11-23 12:45:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:41,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:42,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:42,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681743204] [2021-11-23 12:45:42,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681743204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:42,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:42,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:45:42,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385113141] [2021-11-23 12:45:42,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:42,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:45:42,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:45:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:45:42,996 INFO L87 Difference]: Start difference. First operand 743 states and 846 transitions. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:43,832 INFO L93 Difference]: Finished difference Result 1241 states and 1420 transitions. [2021-11-23 12:45:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:45:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-23 12:45:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:43,835 INFO L225 Difference]: With dead ends: 1241 [2021-11-23 12:45:43,836 INFO L226 Difference]: Without dead ends: 689 [2021-11-23 12:45:43,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-23 12:45:43,838 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 616 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:43,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1622 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:45:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-11-23 12:45:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 677. [2021-11-23 12:45:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 658 states have (on average 1.1702127659574468) internal successors, (770), 676 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 770 transitions. [2021-11-23 12:45:43,902 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 770 transitions. Word has length 128 [2021-11-23 12:45:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:43,903 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 770 transitions. [2021-11-23 12:45:43,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 770 transitions. [2021-11-23 12:45:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:45:43,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:43,905 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:43,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 12:45:43,906 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:43,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2083814397, now seen corresponding path program 1 times [2021-11-23 12:45:43,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:43,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942189230] [2021-11-23 12:45:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:43,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:45,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:45,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942189230] [2021-11-23 12:45:45,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942189230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:45,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:45,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 12:45:45,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453645856] [2021-11-23 12:45:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:45,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:45:45,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:45:45,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:45:45,156 INFO L87 Difference]: Start difference. First operand 677 states and 770 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:46,710 INFO L93 Difference]: Finished difference Result 1512 states and 1677 transitions. [2021-11-23 12:45:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:45:46,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-23 12:45:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:46,713 INFO L225 Difference]: With dead ends: 1512 [2021-11-23 12:45:46,713 INFO L226 Difference]: Without dead ends: 1120 [2021-11-23 12:45:46,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2021-11-23 12:45:46,714 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 1431 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:46,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3111 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 12:45:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-11-23 12:45:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 677. [2021-11-23 12:45:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 658 states have (on average 1.1671732522796352) internal successors, (768), 676 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 768 transitions. [2021-11-23 12:45:46,771 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 768 transitions. Word has length 131 [2021-11-23 12:45:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:46,771 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 768 transitions. [2021-11-23 12:45:46,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 768 transitions. [2021-11-23 12:45:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:45:46,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:46,774 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:46,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 12:45:46,774 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:46,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:46,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2087857327, now seen corresponding path program 1 times [2021-11-23 12:45:46,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:46,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450570630] [2021-11-23 12:45:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:46,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:49,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:49,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450570630] [2021-11-23 12:45:49,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450570630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:49,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:49,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-23 12:45:49,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362056641] [2021-11-23 12:45:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:49,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 12:45:49,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 12:45:49,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:45:49,127 INFO L87 Difference]: Start difference. First operand 677 states and 768 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:53,812 INFO L93 Difference]: Finished difference Result 1462 states and 1638 transitions. [2021-11-23 12:45:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-23 12:45:53,812 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-23 12:45:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:53,814 INFO L225 Difference]: With dead ends: 1462 [2021-11-23 12:45:53,814 INFO L226 Difference]: Without dead ends: 1239 [2021-11-23 12:45:53,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 12:45:53,817 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 2229 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:53,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2229 Valid, 3756 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 12:45:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-23 12:45:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 700. [2021-11-23 12:45:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 681 states have (on average 1.1644640234948604) internal successors, (793), 699 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 793 transitions. [2021-11-23 12:45:53,895 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 793 transitions. Word has length 131 [2021-11-23 12:45:53,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:53,895 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 793 transitions. [2021-11-23 12:45:53,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 793 transitions. [2021-11-23 12:45:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:45:53,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:53,898 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:53,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 12:45:53,899 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:53,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1508647117, now seen corresponding path program 1 times [2021-11-23 12:45:53,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:53,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224304265] [2021-11-23 12:45:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:53,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:54,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224304265] [2021-11-23 12:45:54,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224304265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:54,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:54,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:45:54,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15153860] [2021-11-23 12:45:54,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:54,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:45:54,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:54,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:45:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:45:54,760 INFO L87 Difference]: Start difference. First operand 700 states and 793 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:56,408 INFO L93 Difference]: Finished difference Result 1557 states and 1753 transitions. [2021-11-23 12:45:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 12:45:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-23 12:45:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:56,411 INFO L225 Difference]: With dead ends: 1557 [2021-11-23 12:45:56,411 INFO L226 Difference]: Without dead ends: 1293 [2021-11-23 12:45:56,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2021-11-23 12:45:56,413 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 708 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:56,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2875 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 12:45:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2021-11-23 12:45:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 783. [2021-11-23 12:45:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 764 states have (on average 1.1531413612565444) internal successors, (881), 782 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 881 transitions. [2021-11-23 12:45:56,472 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 881 transitions. Word has length 131 [2021-11-23 12:45:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:56,472 INFO L470 AbstractCegarLoop]: Abstraction has 783 states and 881 transitions. [2021-11-23 12:45:56,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 881 transitions. [2021-11-23 12:45:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:45:56,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:56,475 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:56,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 12:45:56,475 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash 121861707, now seen corresponding path program 1 times [2021-11-23 12:45:56,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:56,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292707514] [2021-11-23 12:45:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:56,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:58,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:58,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292707514] [2021-11-23 12:45:58,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292707514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:45:58,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:45:58,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 12:45:58,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884884544] [2021-11-23 12:45:58,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:45:58,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:45:58,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:45:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:45:58,851 INFO L87 Difference]: Start difference. First operand 783 states and 881 transitions. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:59,808 INFO L93 Difference]: Finished difference Result 1254 states and 1421 transitions. [2021-11-23 12:45:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:45:59,809 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-23 12:45:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:59,810 INFO L225 Difference]: With dead ends: 1254 [2021-11-23 12:45:59,811 INFO L226 Difference]: Without dead ends: 1090 [2021-11-23 12:45:59,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2021-11-23 12:45:59,812 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 1731 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:59,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1731 Valid, 1641 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:45:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-11-23 12:45:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 815. [2021-11-23 12:45:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 796 states have (on average 1.157035175879397) internal successors, (921), 814 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 921 transitions. [2021-11-23 12:45:59,863 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 921 transitions. Word has length 131 [2021-11-23 12:45:59,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:59,863 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 921 transitions. [2021-11-23 12:45:59,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:45:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 921 transitions. [2021-11-23 12:45:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:45:59,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:59,866 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:59,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 12:45:59,866 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:45:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash 380027145, now seen corresponding path program 1 times [2021-11-23 12:45:59,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:59,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423082037] [2021-11-23 12:45:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:59,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:00,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:00,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423082037] [2021-11-23 12:46:00,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423082037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:00,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:00,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:46:00,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868705565] [2021-11-23 12:46:00,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:00,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:46:00,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:46:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:46:00,408 INFO L87 Difference]: Start difference. First operand 815 states and 921 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:01,408 INFO L93 Difference]: Finished difference Result 1238 states and 1402 transitions. [2021-11-23 12:46:01,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:46:01,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-23 12:46:01,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:01,412 INFO L225 Difference]: With dead ends: 1238 [2021-11-23 12:46:01,412 INFO L226 Difference]: Without dead ends: 1083 [2021-11-23 12:46:01,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:46:01,413 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 737 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:01,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 1766 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:46:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-23 12:46:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 815. [2021-11-23 12:46:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 796 states have (on average 1.1557788944723617) internal successors, (920), 814 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 920 transitions. [2021-11-23 12:46:01,474 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 920 transitions. Word has length 131 [2021-11-23 12:46:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:01,474 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 920 transitions. [2021-11-23 12:46:01,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 920 transitions. [2021-11-23 12:46:01,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:46:01,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:01,477 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:01,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 12:46:01,478 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:01,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1311148475, now seen corresponding path program 1 times [2021-11-23 12:46:01,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:01,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629138352] [2021-11-23 12:46:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:01,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:02,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629138352] [2021-11-23 12:46:02,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629138352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:02,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:02,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:46:02,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275784018] [2021-11-23 12:46:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:02,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:46:02,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:46:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:46:02,164 INFO L87 Difference]: Start difference. First operand 815 states and 920 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:03,760 INFO L93 Difference]: Finished difference Result 1280 states and 1443 transitions. [2021-11-23 12:46:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:46:03,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-23 12:46:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:03,762 INFO L225 Difference]: With dead ends: 1280 [2021-11-23 12:46:03,763 INFO L226 Difference]: Without dead ends: 1130 [2021-11-23 12:46:03,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:46:03,764 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 1094 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:03,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1094 Valid, 1726 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 12:46:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-11-23 12:46:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 822. [2021-11-23 12:46:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 803 states have (on average 1.1544209215442092) internal successors, (927), 821 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 927 transitions. [2021-11-23 12:46:03,819 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 927 transitions. Word has length 131 [2021-11-23 12:46:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:03,820 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 927 transitions. [2021-11-23 12:46:03,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 927 transitions. [2021-11-23 12:46:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:46:03,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:03,822 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:03,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 12:46:03,822 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1587871297, now seen corresponding path program 1 times [2021-11-23 12:46:03,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:03,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853064437] [2021-11-23 12:46:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:03,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:04,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:04,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853064437] [2021-11-23 12:46:04,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853064437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:04,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:04,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 12:46:04,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674903232] [2021-11-23 12:46:04,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:04,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:46:04,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:04,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:46:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:46:04,860 INFO L87 Difference]: Start difference. First operand 822 states and 927 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:05,802 INFO L93 Difference]: Finished difference Result 1199 states and 1349 transitions. [2021-11-23 12:46:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:46:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-23 12:46:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:05,805 INFO L225 Difference]: With dead ends: 1199 [2021-11-23 12:46:05,805 INFO L226 Difference]: Without dead ends: 890 [2021-11-23 12:46:05,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2021-11-23 12:46:05,806 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1327 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:05,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 1826 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 12:46:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-23 12:46:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 700. [2021-11-23 12:46:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 681 states have (on average 1.160058737151248) internal successors, (790), 699 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 790 transitions. [2021-11-23 12:46:05,867 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 790 transitions. Word has length 131 [2021-11-23 12:46:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:05,867 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 790 transitions. [2021-11-23 12:46:05,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 790 transitions. [2021-11-23 12:46:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-23 12:46:05,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:05,870 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:05,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 12:46:05,871 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:05,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1035829585, now seen corresponding path program 1 times [2021-11-23 12:46:05,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:05,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900766094] [2021-11-23 12:46:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:05,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:06,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:06,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900766094] [2021-11-23 12:46:06,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900766094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:06,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:06,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:46:06,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456977498] [2021-11-23 12:46:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:06,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:46:06,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:46:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:46:06,078 INFO L87 Difference]: Start difference. First operand 700 states and 790 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:06,204 INFO L93 Difference]: Finished difference Result 962 states and 1083 transitions. [2021-11-23 12:46:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:46:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-23 12:46:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:06,207 INFO L225 Difference]: With dead ends: 962 [2021-11-23 12:46:06,207 INFO L226 Difference]: Without dead ends: 798 [2021-11-23 12:46:06,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:46:06,208 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 203 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:06,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1333 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:46:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-11-23 12:46:06,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 686. [2021-11-23 12:46:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 667 states have (on average 1.1499250374812593) internal successors, (767), 685 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 767 transitions. [2021-11-23 12:46:06,265 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 767 transitions. Word has length 132 [2021-11-23 12:46:06,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:06,266 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 767 transitions. [2021-11-23 12:46:06,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 767 transitions. [2021-11-23 12:46:06,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 12:46:06,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:06,268 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:06,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 12:46:06,269 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2043634630, now seen corresponding path program 1 times [2021-11-23 12:46:06,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:06,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974809331] [2021-11-23 12:46:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:06,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:06,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:06,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974809331] [2021-11-23 12:46:06,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974809331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:06,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:06,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:46:06,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643776354] [2021-11-23 12:46:06,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:06,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:46:06,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:06,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:46:06,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:46:06,590 INFO L87 Difference]: Start difference. First operand 686 states and 767 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 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) [2021-11-23 12:46:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:06,872 INFO L93 Difference]: Finished difference Result 751 states and 842 transitions. [2021-11-23 12:46:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:46:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 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) Word has length 133 [2021-11-23 12:46:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:06,876 INFO L225 Difference]: With dead ends: 751 [2021-11-23 12:46:06,876 INFO L226 Difference]: Without dead ends: 749 [2021-11-23 12:46:06,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:46:06,877 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 652 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:06,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 927 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:46:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-23 12:46:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 684. [2021-11-23 12:46:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 666 states have (on average 1.147147147147147) internal successors, (764), 683 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 764 transitions. [2021-11-23 12:46:06,948 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 764 transitions. Word has length 133 [2021-11-23 12:46:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:06,949 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 764 transitions. [2021-11-23 12:46:06,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 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) [2021-11-23 12:46:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 764 transitions. [2021-11-23 12:46:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 12:46:06,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:06,952 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:06,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-23 12:46:06,952 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash -471168032, now seen corresponding path program 1 times [2021-11-23 12:46:06,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:06,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367432660] [2021-11-23 12:46:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:06,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:07,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:07,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367432660] [2021-11-23 12:46:07,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367432660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:07,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:07,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:46:07,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028469233] [2021-11-23 12:46:07,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:07,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:46:07,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:46:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:46:07,223 INFO L87 Difference]: Start difference. First operand 684 states and 764 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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) [2021-11-23 12:46:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:07,934 INFO L93 Difference]: Finished difference Result 1023 states and 1141 transitions. [2021-11-23 12:46:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:46:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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) Word has length 133 [2021-11-23 12:46:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:07,936 INFO L225 Difference]: With dead ends: 1023 [2021-11-23 12:46:07,936 INFO L226 Difference]: Without dead ends: 1015 [2021-11-23 12:46:07,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:46:07,938 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 412 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:07,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1784 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:46:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-23 12:46:08,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 696. [2021-11-23 12:46:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 678 states have (on average 1.1445427728613569) internal successors, (776), 695 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 776 transitions. [2021-11-23 12:46:08,013 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 776 transitions. Word has length 133 [2021-11-23 12:46:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:08,014 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 776 transitions. [2021-11-23 12:46:08,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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) [2021-11-23 12:46:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 776 transitions. [2021-11-23 12:46:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 12:46:08,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:08,016 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-23 12:46:08,017 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1280514658, now seen corresponding path program 1 times [2021-11-23 12:46:08,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:08,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554549247] [2021-11-23 12:46:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:08,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:08,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:08,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554549247] [2021-11-23 12:46:08,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554549247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:08,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:08,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:46:08,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137039147] [2021-11-23 12:46:08,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:08,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:46:08,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:46:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:46:08,795 INFO L87 Difference]: Start difference. First operand 696 states and 776 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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) [2021-11-23 12:46:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:10,073 INFO L93 Difference]: Finished difference Result 1163 states and 1286 transitions. [2021-11-23 12:46:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:46:10,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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) Word has length 133 [2021-11-23 12:46:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:10,078 INFO L225 Difference]: With dead ends: 1163 [2021-11-23 12:46:10,078 INFO L226 Difference]: Without dead ends: 1037 [2021-11-23 12:46:10,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:46:10,079 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1133 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:10,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 1478 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:46:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-11-23 12:46:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 697. [2021-11-23 12:46:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 679 states have (on average 1.1443298969072164) internal successors, (777), 696 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 777 transitions. [2021-11-23 12:46:10,140 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 777 transitions. Word has length 133 [2021-11-23 12:46:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:10,140 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 777 transitions. [2021-11-23 12:46:10,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 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) [2021-11-23 12:46:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 777 transitions. [2021-11-23 12:46:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 12:46:10,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:10,143 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:10,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-23 12:46:10,143 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1075297836, now seen corresponding path program 1 times [2021-11-23 12:46:10,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:10,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433357146] [2021-11-23 12:46:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:10,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:11,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433357146] [2021-11-23 12:46:11,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433357146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:11,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:11,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 12:46:11,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307162379] [2021-11-23 12:46:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:11,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:46:11,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:46:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:46:11,002 INFO L87 Difference]: Start difference. First operand 697 states and 777 transitions. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:13,214 INFO L93 Difference]: Finished difference Result 1675 states and 1873 transitions. [2021-11-23 12:46:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 12:46:13,215 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-23 12:46:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:13,217 INFO L225 Difference]: With dead ends: 1675 [2021-11-23 12:46:13,217 INFO L226 Difference]: Without dead ends: 1397 [2021-11-23 12:46:13,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=1143, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 12:46:13,220 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 869 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:13,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 3419 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 12:46:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2021-11-23 12:46:13,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 779. [2021-11-23 12:46:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 761 states have (on average 1.135348226018397) internal successors, (864), 778 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 864 transitions. [2021-11-23 12:46:13,302 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 864 transitions. Word has length 134 [2021-11-23 12:46:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 864 transitions. [2021-11-23 12:46:13,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 864 transitions. [2021-11-23 12:46:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 12:46:13,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:13,306 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:13,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-23 12:46:13,306 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1296441426, now seen corresponding path program 1 times [2021-11-23 12:46:13,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:13,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725551599] [2021-11-23 12:46:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:13,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:14,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:14,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725551599] [2021-11-23 12:46:14,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725551599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:14,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:14,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-23 12:46:14,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888549545] [2021-11-23 12:46:14,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:14,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 12:46:14,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 12:46:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:46:14,182 INFO L87 Difference]: Start difference. First operand 779 states and 864 transitions. Second operand has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:18,761 INFO L93 Difference]: Finished difference Result 1766 states and 1933 transitions. [2021-11-23 12:46:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-23 12:46:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-23 12:46:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:18,767 INFO L225 Difference]: With dead ends: 1766 [2021-11-23 12:46:18,767 INFO L226 Difference]: Without dead ends: 1636 [2021-11-23 12:46:18,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2843 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1268, Invalid=7288, Unknown=0, NotChecked=0, Total=8556 [2021-11-23 12:46:18,776 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 1671 mSDsluCounter, 4331 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 4960 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:18,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 4960 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 12:46:18,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-23 12:46:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 794. [2021-11-23 12:46:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 776 states have (on average 1.1365979381443299) internal successors, (882), 793 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 882 transitions. [2021-11-23 12:46:18,873 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 882 transitions. Word has length 134 [2021-11-23 12:46:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:18,873 INFO L470 AbstractCegarLoop]: Abstraction has 794 states and 882 transitions. [2021-11-23 12:46:18,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.375) internal successors, (134), 16 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 882 transitions. [2021-11-23 12:46:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 12:46:18,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:18,876 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:18,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-23 12:46:18,877 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1038275988, now seen corresponding path program 1 times [2021-11-23 12:46:18,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:18,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869638003] [2021-11-23 12:46:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:18,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:20,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:20,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869638003] [2021-11-23 12:46:20,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869638003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:20,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:20,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-23 12:46:20,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979168140] [2021-11-23 12:46:20,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:20,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 12:46:20,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:20,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 12:46:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2021-11-23 12:46:20,631 INFO L87 Difference]: Start difference. First operand 794 states and 882 transitions. Second operand has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:24,396 INFO L93 Difference]: Finished difference Result 1422 states and 1587 transitions. [2021-11-23 12:46:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:46:24,397 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-23 12:46:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:24,404 INFO L225 Difference]: With dead ends: 1422 [2021-11-23 12:46:24,405 INFO L226 Difference]: Without dead ends: 1140 [2021-11-23 12:46:24,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=424, Invalid=1738, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 12:46:24,407 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1884 mSDsluCounter, 3849 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 4206 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:24,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1884 Valid, 4206 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 12:46:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-11-23 12:46:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 779. [2021-11-23 12:46:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 761 states have (on average 1.135348226018397) internal successors, (864), 778 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 864 transitions. [2021-11-23 12:46:24,506 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 864 transitions. Word has length 134 [2021-11-23 12:46:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:24,506 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 864 transitions. [2021-11-23 12:46:24,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 864 transitions. [2021-11-23 12:46:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 12:46:24,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:24,510 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:24,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-23 12:46:24,510 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1652911510, now seen corresponding path program 1 times [2021-11-23 12:46:24,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:24,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022355294] [2021-11-23 12:46:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:24,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:25,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:25,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022355294] [2021-11-23 12:46:25,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022355294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:25,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:25,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:46:25,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922687172] [2021-11-23 12:46:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:25,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:46:25,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:25,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:46:25,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:46:25,324 INFO L87 Difference]: Start difference. First operand 779 states and 864 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:26,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:26,200 INFO L93 Difference]: Finished difference Result 1433 states and 1587 transitions. [2021-11-23 12:46:26,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 12:46:26,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-23 12:46:26,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:26,203 INFO L225 Difference]: With dead ends: 1433 [2021-11-23 12:46:26,203 INFO L226 Difference]: Without dead ends: 1038 [2021-11-23 12:46:26,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:46:26,205 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 1510 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:26,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1510 Valid, 1218 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:46:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2021-11-23 12:46:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 611. [2021-11-23 12:46:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 593 states have (on average 1.1264755480607083) internal successors, (668), 610 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 668 transitions. [2021-11-23 12:46:26,277 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 668 transitions. Word has length 134 [2021-11-23 12:46:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:26,278 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 668 transitions. [2021-11-23 12:46:26,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 668 transitions. [2021-11-23 12:46:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 12:46:26,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:26,280 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:26,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-23 12:46:26,280 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1132679748, now seen corresponding path program 1 times [2021-11-23 12:46:26,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:26,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707707034] [2021-11-23 12:46:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:26,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:28,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:28,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707707034] [2021-11-23 12:46:28,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707707034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:28,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:28,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-23 12:46:28,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100145172] [2021-11-23 12:46:28,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:28,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 12:46:28,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:28,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 12:46:28,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:46:28,078 INFO L87 Difference]: Start difference. First operand 611 states and 668 transitions. Second operand has 21 states, 21 states have (on average 6.428571428571429) internal successors, (135), 21 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) [2021-11-23 12:46:32,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:32,871 INFO L93 Difference]: Finished difference Result 1376 states and 1517 transitions. [2021-11-23 12:46:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 12:46:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.428571428571429) internal successors, (135), 21 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) Word has length 135 [2021-11-23 12:46:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:32,875 INFO L225 Difference]: With dead ends: 1376 [2021-11-23 12:46:32,875 INFO L226 Difference]: Without dead ends: 1374 [2021-11-23 12:46:32,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=517, Invalid=2239, Unknown=0, NotChecked=0, Total=2756 [2021-11-23 12:46:32,878 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 3325 mSDsluCounter, 3954 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3325 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:32,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3325 Valid, 4194 Invalid, 2207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 12:46:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2021-11-23 12:46:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 781. [2021-11-23 12:46:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 763 states have (on average 1.125819134993447) internal successors, (859), 780 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 859 transitions. [2021-11-23 12:46:32,970 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 859 transitions. Word has length 135 [2021-11-23 12:46:32,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:32,971 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 859 transitions. [2021-11-23 12:46:32,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.428571428571429) internal successors, (135), 21 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) [2021-11-23 12:46:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 859 transitions. [2021-11-23 12:46:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:32,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:32,974 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:32,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-23 12:46:32,974 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2090897440, now seen corresponding path program 1 times [2021-11-23 12:46:32,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:32,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247879523] [2021-11-23 12:46:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:32,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:33,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:33,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247879523] [2021-11-23 12:46:33,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247879523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:33,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:33,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:46:33,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419501513] [2021-11-23 12:46:33,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:33,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:46:33,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:46:33,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:46:33,731 INFO L87 Difference]: Start difference. First operand 781 states and 859 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 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) [2021-11-23 12:46:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:34,861 INFO L93 Difference]: Finished difference Result 1656 states and 1843 transitions. [2021-11-23 12:46:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:46:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 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) Word has length 137 [2021-11-23 12:46:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:34,865 INFO L225 Difference]: With dead ends: 1656 [2021-11-23 12:46:34,865 INFO L226 Difference]: Without dead ends: 1388 [2021-11-23 12:46:34,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:46:34,867 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 550 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:34,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 2623 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:46:34,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-11-23 12:46:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 815. [2021-11-23 12:46:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 797 states have (on average 1.124215809284818) internal successors, (896), 814 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 896 transitions. [2021-11-23 12:46:34,967 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 896 transitions. Word has length 137 [2021-11-23 12:46:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:34,967 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 896 transitions. [2021-11-23 12:46:34,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 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) [2021-11-23 12:46:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 896 transitions. [2021-11-23 12:46:34,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:34,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:34,970 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:34,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-23 12:46:34,971 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash -280841822, now seen corresponding path program 1 times [2021-11-23 12:46:34,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:34,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151861993] [2021-11-23 12:46:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:34,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:36,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151861993] [2021-11-23 12:46:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151861993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:36,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:36,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 12:46:36,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693133950] [2021-11-23 12:46:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:36,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:46:36,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:46:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:46:36,171 INFO L87 Difference]: Start difference. First operand 815 states and 896 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 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) [2021-11-23 12:46:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:39,989 INFO L93 Difference]: Finished difference Result 1752 states and 1922 transitions. [2021-11-23 12:46:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-23 12:46:39,990 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 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) Word has length 137 [2021-11-23 12:46:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:39,993 INFO L225 Difference]: With dead ends: 1752 [2021-11-23 12:46:39,993 INFO L226 Difference]: Without dead ends: 1596 [2021-11-23 12:46:39,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=723, Invalid=3567, Unknown=0, NotChecked=0, Total=4290 [2021-11-23 12:46:39,996 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1326 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:39,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 4395 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 12:46:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-11-23 12:46:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 845. [2021-11-23 12:46:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 827 states have (on average 1.1269649334945586) internal successors, (932), 844 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 932 transitions. [2021-11-23 12:46:40,071 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 932 transitions. Word has length 137 [2021-11-23 12:46:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:40,071 INFO L470 AbstractCegarLoop]: Abstraction has 845 states and 932 transitions. [2021-11-23 12:46:40,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 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) [2021-11-23 12:46:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 932 transitions. [2021-11-23 12:46:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:40,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:40,074 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:40,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-23 12:46:40,075 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:40,076 INFO L85 PathProgramCache]: Analyzing trace with hash -22676384, now seen corresponding path program 1 times [2021-11-23 12:46:40,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:40,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730574507] [2021-11-23 12:46:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:40,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:41,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:41,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730574507] [2021-11-23 12:46:41,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730574507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:41,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:41,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-23 12:46:41,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651541180] [2021-11-23 12:46:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:41,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 12:46:41,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 12:46:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-23 12:46:41,602 INFO L87 Difference]: Start difference. First operand 845 states and 932 transitions. Second operand has 22 states, 22 states have (on average 6.2272727272727275) internal successors, (137), 22 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) [2021-11-23 12:46:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:44,736 INFO L93 Difference]: Finished difference Result 1719 states and 1909 transitions. [2021-11-23 12:46:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 12:46:44,737 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2272727272727275) internal successors, (137), 22 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) Word has length 137 [2021-11-23 12:46:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:44,739 INFO L225 Difference]: With dead ends: 1719 [2021-11-23 12:46:44,739 INFO L226 Difference]: Without dead ends: 1443 [2021-11-23 12:46:44,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 12:46:44,740 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 2343 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:44,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2343 Valid, 3586 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 12:46:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-11-23 12:46:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 813. [2021-11-23 12:46:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 795 states have (on average 1.1257861635220126) internal successors, (895), 812 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 895 transitions. [2021-11-23 12:46:44,811 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 895 transitions. Word has length 137 [2021-11-23 12:46:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:44,811 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 895 transitions. [2021-11-23 12:46:44,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2272727272727275) internal successors, (137), 22 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) [2021-11-23 12:46:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 895 transitions. [2021-11-23 12:46:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:44,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:44,813 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:44,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-23 12:46:44,813 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash 41509598, now seen corresponding path program 1 times [2021-11-23 12:46:44,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:44,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106377296] [2021-11-23 12:46:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:44,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:45,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:45,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106377296] [2021-11-23 12:46:45,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106377296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:45,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:45,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:46:45,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014060641] [2021-11-23 12:46:45,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:45,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:46:45,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:46:45,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:46:45,675 INFO L87 Difference]: Start difference. First operand 813 states and 895 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 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) [2021-11-23 12:46:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:46,581 INFO L93 Difference]: Finished difference Result 1386 states and 1542 transitions. [2021-11-23 12:46:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:46:46,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 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) Word has length 137 [2021-11-23 12:46:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:46,583 INFO L225 Difference]: With dead ends: 1386 [2021-11-23 12:46:46,583 INFO L226 Difference]: Without dead ends: 1079 [2021-11-23 12:46:46,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:46:46,584 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 267 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:46,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1988 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:46:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-23 12:46:46,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 820. [2021-11-23 12:46:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 802 states have (on average 1.1234413965087282) internal successors, (901), 819 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 901 transitions. [2021-11-23 12:46:46,684 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 901 transitions. Word has length 137 [2021-11-23 12:46:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:46,684 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 901 transitions. [2021-11-23 12:46:46,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 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) [2021-11-23 12:46:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 901 transitions. [2021-11-23 12:46:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:46,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:46,687 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:46,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-23 12:46:46,688 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:46,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1964737632, now seen corresponding path program 1 times [2021-11-23 12:46:46,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:46,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279847613] [2021-11-23 12:46:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:46,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:47,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:47,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279847613] [2021-11-23 12:46:47,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279847613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:47,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:47,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:46:47,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951630699] [2021-11-23 12:46:47,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:47,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:46:47,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:47,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:46:47,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:46:47,720 INFO L87 Difference]: Start difference. First operand 820 states and 901 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 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) [2021-11-23 12:46:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:48,863 INFO L93 Difference]: Finished difference Result 1327 states and 1457 transitions. [2021-11-23 12:46:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:46:48,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 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) Word has length 137 [2021-11-23 12:46:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:48,865 INFO L225 Difference]: With dead ends: 1327 [2021-11-23 12:46:48,866 INFO L226 Difference]: Without dead ends: 1171 [2021-11-23 12:46:48,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:46:48,867 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 782 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:48,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 2096 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:46:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-23 12:46:48,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 820. [2021-11-23 12:46:48,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 802 states have (on average 1.1296758104738154) internal successors, (906), 819 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 906 transitions. [2021-11-23 12:46:48,944 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 906 transitions. Word has length 137 [2021-11-23 12:46:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:48,945 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 906 transitions. [2021-11-23 12:46:48,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 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) [2021-11-23 12:46:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 906 transitions. [2021-11-23 12:46:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:48,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:48,948 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:48,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-23 12:46:48,948 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:48,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:48,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2072064226, now seen corresponding path program 1 times [2021-11-23 12:46:48,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:48,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676109714] [2021-11-23 12:46:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:48,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:50,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:50,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676109714] [2021-11-23 12:46:50,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676109714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:50,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:50,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 12:46:50,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198751025] [2021-11-23 12:46:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:50,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:46:50,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:46:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:46:50,404 INFO L87 Difference]: Start difference. First operand 820 states and 906 transitions. Second operand has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 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) [2021-11-23 12:46:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:52,607 INFO L93 Difference]: Finished difference Result 1348 states and 1485 transitions. [2021-11-23 12:46:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 12:46:52,607 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 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) Word has length 137 [2021-11-23 12:46:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:52,609 INFO L225 Difference]: With dead ends: 1348 [2021-11-23 12:46:52,609 INFO L226 Difference]: Without dead ends: 977 [2021-11-23 12:46:52,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2021-11-23 12:46:52,610 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 1075 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:52,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 2985 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 12:46:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-11-23 12:46:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 751. [2021-11-23 12:46:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 733 states have (on average 1.1268758526603002) internal successors, (826), 750 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 826 transitions. [2021-11-23 12:46:52,668 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 826 transitions. Word has length 137 [2021-11-23 12:46:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:52,668 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 826 transitions. [2021-11-23 12:46:52,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 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) [2021-11-23 12:46:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 826 transitions. [2021-11-23 12:46:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:52,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:52,670 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:52,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-23 12:46:52,670 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:52,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1878366242, now seen corresponding path program 1 times [2021-11-23 12:46:52,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:52,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031830696] [2021-11-23 12:46:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:52,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:46:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:46:54,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:46:54,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031830696] [2021-11-23 12:46:54,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031830696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:46:54,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:46:54,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 12:46:54,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304593339] [2021-11-23 12:46:54,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:46:54,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:46:54,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:46:54,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:46:54,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:46:54,759 INFO L87 Difference]: Start difference. First operand 751 states and 826 transitions. Second operand has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 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) [2021-11-23 12:46:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:46:57,956 INFO L93 Difference]: Finished difference Result 1478 states and 1631 transitions. [2021-11-23 12:46:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 12:46:57,957 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 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) Word has length 137 [2021-11-23 12:46:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:46:57,959 INFO L225 Difference]: With dead ends: 1478 [2021-11-23 12:46:57,959 INFO L226 Difference]: Without dead ends: 1362 [2021-11-23 12:46:57,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=534, Invalid=2016, Unknown=0, NotChecked=0, Total=2550 [2021-11-23 12:46:57,961 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 3011 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3011 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:46:57,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3011 Valid, 2765 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 12:46:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-23 12:46:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 782. [2021-11-23 12:46:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 764 states have (on average 1.1269633507853403) internal successors, (861), 781 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:46:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 861 transitions. [2021-11-23 12:46:58,061 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 861 transitions. Word has length 137 [2021-11-23 12:46:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:46:58,061 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 861 transitions. [2021-11-23 12:46:58,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 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) [2021-11-23 12:46:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 861 transitions. [2021-11-23 12:46:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:46:58,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:46:58,063 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:46:58,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-23 12:46:58,063 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:46:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:46:58,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1920065060, now seen corresponding path program 1 times [2021-11-23 12:46:58,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:46:58,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673566330] [2021-11-23 12:46:58,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:46:58,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:46:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:47:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:47:00,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:47:00,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673566330] [2021-11-23 12:47:00,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673566330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:47:00,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:47:00,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-23 12:47:00,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735096795] [2021-11-23 12:47:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:47:00,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 12:47:00,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:47:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 12:47:00,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-11-23 12:47:00,015 INFO L87 Difference]: Start difference. First operand 782 states and 861 transitions. Second operand has 20 states, 20 states have (on average 6.85) internal successors, (137), 20 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) [2021-11-23 12:47:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:47:02,862 INFO L93 Difference]: Finished difference Result 1177 states and 1296 transitions. [2021-11-23 12:47:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 12:47:02,863 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.85) internal successors, (137), 20 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) Word has length 137 [2021-11-23 12:47:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:47:02,865 INFO L225 Difference]: With dead ends: 1177 [2021-11-23 12:47:02,865 INFO L226 Difference]: Without dead ends: 845 [2021-11-23 12:47:02,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=347, Invalid=1213, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 12:47:02,866 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1380 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:47:02,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 2609 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 12:47:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-11-23 12:47:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 602. [2021-11-23 12:47:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 584 states have (on average 1.1130136986301369) internal successors, (650), 601 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:47:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 650 transitions. [2021-11-23 12:47:02,962 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 650 transitions. Word has length 137 [2021-11-23 12:47:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:47:02,963 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 650 transitions. [2021-11-23 12:47:02,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.85) internal successors, (137), 20 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) [2021-11-23 12:47:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 650 transitions. [2021-11-23 12:47:02,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:47:02,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:47:02,965 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:47:02,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-23 12:47:02,966 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:47:02,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:47:02,966 INFO L85 PathProgramCache]: Analyzing trace with hash 941892054, now seen corresponding path program 1 times [2021-11-23 12:47:02,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:47:02,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011513721] [2021-11-23 12:47:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:47:02,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:47:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:47:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:47:03,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:47:03,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011513721] [2021-11-23 12:47:03,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011513721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:47:03,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:47:03,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 12:47:03,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672029186] [2021-11-23 12:47:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:47:03,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:47:03,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:47:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:47:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:47:03,475 INFO L87 Difference]: Start difference. First operand 602 states and 650 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 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) [2021-11-23 12:47:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:47:04,415 INFO L93 Difference]: Finished difference Result 939 states and 1022 transitions. [2021-11-23 12:47:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:47:04,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 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) Word has length 137 [2021-11-23 12:47:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:47:04,416 INFO L225 Difference]: With dead ends: 939 [2021-11-23 12:47:04,417 INFO L226 Difference]: Without dead ends: 801 [2021-11-23 12:47:04,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:47:04,417 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 758 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:47:04,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1826 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:47:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-11-23 12:47:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 618. [2021-11-23 12:47:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 600 states have (on average 1.1116666666666666) internal successors, (667), 617 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:47:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 667 transitions. [2021-11-23 12:47:04,480 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 667 transitions. Word has length 137 [2021-11-23 12:47:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:47:04,481 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 667 transitions. [2021-11-23 12:47:04,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 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) [2021-11-23 12:47:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 667 transitions. [2021-11-23 12:47:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:47:04,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:47:04,483 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:47:04,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-23 12:47:04,484 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:47:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:47:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash -448796532, now seen corresponding path program 1 times [2021-11-23 12:47:04,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:47:04,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135551311] [2021-11-23 12:47:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:47:04,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:47:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:47:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:47:15,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:47:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135551311] [2021-11-23 12:47:15,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135551311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:47:15,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:47:15,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-23 12:47:15,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488219473] [2021-11-23 12:47:15,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:47:15,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 12:47:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:47:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 12:47:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2021-11-23 12:47:15,369 INFO L87 Difference]: Start difference. First operand 618 states and 667 transitions. Second operand has 32 states, 32 states have (on average 4.28125) internal successors, (137), 32 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) [2021-11-23 12:47:18,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:47:22,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:47:23,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:47:29,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:47:34,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:47:35,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:47:45,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:47:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:47:50,803 INFO L93 Difference]: Finished difference Result 1209 states and 1314 transitions. [2021-11-23 12:47:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 12:47:50,803 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.28125) internal successors, (137), 32 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) Word has length 137 [2021-11-23 12:47:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:47:50,804 INFO L225 Difference]: With dead ends: 1209 [2021-11-23 12:47:50,805 INFO L226 Difference]: Without dead ends: 980 [2021-11-23 12:47:50,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=448, Invalid=2204, Unknown=0, NotChecked=0, Total=2652 [2021-11-23 12:47:50,806 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 2045 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 120 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 5119 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:47:50,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 5119 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2452 Invalid, 3 Unknown, 0 Unchecked, 28.7s Time] [2021-11-23 12:47:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-11-23 12:47:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 734. [2021-11-23 12:47:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 716 states have (on average 1.100558659217877) internal successors, (788), 733 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:47:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 788 transitions. [2021-11-23 12:47:50,894 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 788 transitions. Word has length 137 [2021-11-23 12:47:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:47:50,894 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 788 transitions. [2021-11-23 12:47:50,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.28125) internal successors, (137), 32 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) [2021-11-23 12:47:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 788 transitions. [2021-11-23 12:47:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 12:47:50,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:47:50,897 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:47:50,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-23 12:47:50,898 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:47:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:47:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2037144434, now seen corresponding path program 1 times [2021-11-23 12:47:50,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:47:50,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80438449] [2021-11-23 12:47:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:47:50,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:47:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:47:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:47:53,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:47:53,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80438449] [2021-11-23 12:47:53,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80438449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:47:53,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:47:53,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 12:47:53,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424503951] [2021-11-23 12:47:53,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:47:53,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 12:47:53,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:47:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 12:47:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:47:53,552 INFO L87 Difference]: Start difference. First operand 734 states and 788 transitions. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 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) [2021-11-23 12:47:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:47:56,064 INFO L93 Difference]: Finished difference Result 1202 states and 1305 transitions. [2021-11-23 12:47:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:47:56,065 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 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) Word has length 137 [2021-11-23 12:47:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:47:56,066 INFO L225 Difference]: With dead ends: 1202 [2021-11-23 12:47:56,066 INFO L226 Difference]: Without dead ends: 1077 [2021-11-23 12:47:56,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2021-11-23 12:47:56,067 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1658 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:47:56,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1658 Valid, 3258 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 12:47:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2021-11-23 12:47:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 703. [2021-11-23 12:47:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 685 states have (on average 1.0992700729927007) internal successors, (753), 702 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:47:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 753 transitions. [2021-11-23 12:47:56,141 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 753 transitions. Word has length 137 [2021-11-23 12:47:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:47:56,141 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 753 transitions. [2021-11-23 12:47:56,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 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) [2021-11-23 12:47:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 753 transitions. [2021-11-23 12:47:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-23 12:47:56,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:47:56,143 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:47:56,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-23 12:47:56,143 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:47:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:47:56,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1117037991, now seen corresponding path program 1 times [2021-11-23 12:47:56,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:47:56,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938101663] [2021-11-23 12:47:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:47:56,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:47:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:47:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:47:58,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:47:58,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938101663] [2021-11-23 12:47:58,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938101663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:47:58,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:47:58,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-23 12:47:58,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093910093] [2021-11-23 12:47:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:47:58,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 12:47:58,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:47:58,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 12:47:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-23 12:47:58,463 INFO L87 Difference]: Start difference. First operand 703 states and 753 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:05,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:48:05,732 INFO L93 Difference]: Finished difference Result 1280 states and 1383 transitions. [2021-11-23 12:48:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-23 12:48:05,732 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-23 12:48:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:48:05,733 INFO L225 Difference]: With dead ends: 1280 [2021-11-23 12:48:05,734 INFO L226 Difference]: Without dead ends: 1276 [2021-11-23 12:48:05,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3250 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1411, Invalid=8891, Unknown=0, NotChecked=0, Total=10302 [2021-11-23 12:48:05,735 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 1831 mSDsluCounter, 6349 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 6796 SdHoareTripleChecker+Invalid, 3601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:48:05,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 6796 Invalid, 3601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 3181 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-23 12:48:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2021-11-23 12:48:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 726. [2021-11-23 12:48:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 709 states have (on average 1.0987306064880114) internal successors, (779), 725 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 779 transitions. [2021-11-23 12:48:05,814 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 779 transitions. Word has length 139 [2021-11-23 12:48:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:48:05,814 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 779 transitions. [2021-11-23 12:48:05,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 779 transitions. [2021-11-23 12:48:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 12:48:05,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:05,816 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:48:05,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-23 12:48:05,816 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:48:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1401343581, now seen corresponding path program 1 times [2021-11-23 12:48:05,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:48:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505148233] [2021-11-23 12:48:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:05,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:48:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:06,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:48:06,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505148233] [2021-11-23 12:48:06,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505148233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:48:06,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:48:06,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 12:48:06,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120772798] [2021-11-23 12:48:06,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:48:06,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:48:06,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:48:06,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:48:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:48:06,492 INFO L87 Difference]: Start difference. First operand 726 states and 779 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:48:07,989 INFO L93 Difference]: Finished difference Result 1407 states and 1516 transitions. [2021-11-23 12:48:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 12:48:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-11-23 12:48:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:48:07,991 INFO L225 Difference]: With dead ends: 1407 [2021-11-23 12:48:07,991 INFO L226 Difference]: Without dead ends: 1235 [2021-11-23 12:48:07,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 12:48:07,992 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 760 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:48:07,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 3082 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 12:48:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2021-11-23 12:48:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 754. [2021-11-23 12:48:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 737 states have (on average 1.0949796472184532) internal successors, (807), 753 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 807 transitions. [2021-11-23 12:48:08,096 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 807 transitions. Word has length 144 [2021-11-23 12:48:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:48:08,096 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 807 transitions. [2021-11-23 12:48:08,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 13 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:48:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 807 transitions. [2021-11-23 12:48:08,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 12:48:08,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:48:08,100 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:48:08,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-23 12:48:08,100 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-23 12:48:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:48:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash 518312257, now seen corresponding path program 1 times [2021-11-23 12:48:08,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:48:08,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435137655] [2021-11-23 12:48:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:08,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:48:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:48:08,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:48:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435137655] [2021-11-23 12:48:08,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435137655] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:48:08,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066309636] [2021-11-23 12:48:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:48:08,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:48:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:48:08,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:48:08,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1c499ea-58a0-42a5-a597-b7925345ec86/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:48:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:48:09,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-23 12:48:09,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:48:09,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 12:48:09,419 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 12:48:09,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 12:48:09,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-23 12:48:10,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 12:48:10,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-11-23 12:48:10,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:48:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:10,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:10,795 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 12:48:10,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 62 [2021-11-23 12:48:10,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:10,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:10,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:48:10,824 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 12:48:10,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 57 [2021-11-23 12:48:13,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:48:13,823 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-11-23 12:48:13,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 32 [2021-11-23 12:48:14,115 INFO L354 Elim1Store]: treesize reduction 282, result has 22.3 percent of original size [2021-11-23 12:48:14,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 82 treesize of output 139 [2021-11-23 12:48:14,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:14,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:14,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:14,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:14,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 23 [2021-11-23 12:48:14,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:14,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:14,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:15,025 INFO L354 Elim1Store]: treesize reduction 28, result has 33.3 percent of original size [2021-11-23 12:48:15,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 48 [2021-11-23 12:48:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:15,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:15,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-11-23 12:48:16,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:16,360 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 12:48:16,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 55 [2021-11-23 12:48:16,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:16,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:16,457 INFO L354 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2021-11-23 12:48:16,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 79 [2021-11-23 12:48:16,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:48:16,657 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-23 12:48:16,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 54 [2021-11-23 12:48:37,302 INFO L354 Elim1Store]: treesize reduction 1351, result has 7.2 percent of original size [2021-11-23 12:48:37,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 64 case distinctions, treesize of input 214 treesize of output 216 [2021-11-23 12:48:44,891 INFO L354 Elim1Store]: treesize reduction 245, result has 71.0 percent of original size [2021-11-23 12:48:44,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 222 treesize of output 713 [2021-11-23 12:50:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:50:13,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:50:40,257 WARN L227 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:51:09,251 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:51:24,656 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:51:34,432 WARN L227 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 12:51:34,920 INFO L354 Elim1Store]: treesize reduction 358, result has 53.7 percent of original size [2021-11-23 12:51:34,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 366 treesize of output 582 [2021-11-23 12:51:34,971 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 12:51:34,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 582 treesize of output 634 [2021-11-23 12:51:35,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 12:51:35,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 634 treesize of output 686 [2021-11-23 12:51:49,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 12:51:50,020 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 12:51:50,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22